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Guides for 542+ tools

Practical how-tos on SEO, finance calculators, image formats, and more — written by the Mytulify team.

How Car Trade-In Equity Is CalculatedOctober 1, 2026 · 4 min read · Trade-in equity is the offer minus the loan payoff. See a worked example, what the tax line assumes, and when to use the free calculator.Square Footage Calculator for Rooms, Circles, and Odd LotsSeptember 30, 2026 · 1 min read · Rectangle math is not enough for a round patio or a trapezoid lot. Get square feet and square meters from the shape you actually have.Paint Calculator — How Many Gallons a Room Actually NeedsSeptember 30, 2026 · 2 min read · Wall height, doors, windows, and a second coat change the gallon count. Estimate paintable square feet before you buy too much or run out mid-wall.Mortgage Calculator — PITI, PMI, and 15-Year vs 30-Year CostSeptember 30, 2026 · 2 min read · A listing-price payment is not the housing payment. Estimate principal, interest, taxes, insurance, HOA, and PMI, then compare a 15-year loan with a 30-year loan.Home Affordability Calculator — Max Price from Income and DebtsSeptember 30, 2026 · 1 min read · Start from what you can pay each month, not from the most expensive listing in the search. Income, debts, down payment, and rate set a price range.Gravel Calculator — Cubic Yards and Tons for a Driveway or PathSeptember 30, 2026 · 1 min read · Area and depth become cubic yards, then tons. Use a realistic tons-per-yard figure for gravel, sand, or mulch so the delivery matches the hole you dug.Fuel Cost Calculator — Trip Gallons, MPG, and Cost per PersonSeptember 30, 2026 · 1 min read · Distance and miles per gallon decide the gallons. Price per gallon and the number of passengers decide what the drive actually costs.Duplicate Photo Finder Online — Remove Similar Photos and Free Up StorageSeptember 30, 2026 · 6 min read · A duplicate photo finder online can group identical files and near-copies from WhatsApp, bursts, and HEIC exports — then you keep the sharpest shot and reclaim the space.Debt-to-Income Ratio Calculator — Front-End and Back-End DTISeptember 30, 2026 · 1 min read · Lenders look at housing alone and at housing plus every other monthly debt. Both ratios use gross income, not take-home pay.Credit Card Payoff Calculator — Months, Interest, and Extra PaymentsSeptember 30, 2026 · 1 min read · A minimum payment can keep a balance alive for years. See the month count and the interest, then test a fixed extra amount.Concrete Calculator — Cubic Yards, Bags, and Waste for a SlabSeptember 30, 2026 · 2 min read · Turn a slab or round pier into cubic yards, cubic meters, and 60 or 80 pound bags, with a waste allowance so the pour does not run short.APR Calculator — Why APR Is Higher Than the Interest RateSeptember 30, 2026 · 1 min read · The note rate prices the monthly payment. APR folds in upfront fees so two loans with the same rate are not the same deal.Turn Handwritten Notes Into Summaries and Study FlashcardsSeptember 21, 2026 · 2 min read · Digitize lecture and meeting notes from a photo — bullet summaries, outlines, or Q&A flashcards — without retyping every page.How to Convert Handwritten Math to LaTeX From a PhotoSeptember 21, 2026 · 2 min read · Photograph notebook equations and turn them into clean LaTeX for Overleaf, homework, or docs — plus tips for accurate OCR and optional step-by-step solutions.How to Write Pull Request Descriptions Reviewers Actually ReadSeptember 21, 2026 · 3 min read · Learn what makes a PR description useful, a simple GitHub-ready template, and how to draft titles, summaries, and test plans from a git diff with AI.How to Answer Interview Questions With STAR (Without Sounding Scripted)September 21, 2026 · 3 min read · Use the STAR method for behavioral interviews, prepare technical answers that show trade-offs, and draft honest practice answers from your real experience with AI.Midjourney vs DALL·E — Which AI Image Generator Should You Use?September 17, 2026 · 3 min read · Compare Midjourney and DALL·E (ChatGPT Images) for art style, commercial use, and speed — plus when a free browser image tool is the better first step.Grammarly vs ChatGPT for Writing — Editor or Drafter?September 17, 2026 · 3 min read · Compare Grammarly and ChatGPT for grammar, tone, and drafts — and when a private browser text tool is safer than sending copy to the cloud.GitHub Copilot vs Cursor — Which AI Coding Tool Should You Pay For?September 17, 2026 · 3 min read · Compare GitHub Copilot and Cursor for autocomplete, chat-in-editor, and refactors — and when a free browser code tool is enough instead of a subscription.ElevenLabs vs Browser Text to Speech — Paid AI Voice or Free Device Voices?September 17, 2026 · 3 min read · Compare ElevenLabs AI voices with free browser text-to-speech — quality, cost, privacy, and when Mytulify’s on-device TTS is enough for YouTube and courses.ChatGPT vs Claude vs Gemini — Which AI Assistant Fits Your Work?September 17, 2026 · 4 min read · Compare ChatGPT, Claude, and Google Gemini on writing, coding, research, and daily work — then pick a paid plan only if the free tier is not enough.XIRR vs CAGR — Which Return Rate Fits Your Cash FlowsSeptember 7, 2026 · 3 min read · Compare XIRR and CAGR — what each measures, when irregular dates matter, and how to calculate both with free tools on Mytulify.XIRR Calculator Guide — Annualized Return for Irregular Cash FlowsSeptember 7, 2026 · 3 min read · Learn how an XIRR calculator turns dated investments, top-ups, and redemptions into one annualized return — then run the numbers free in your browser.ROI vs Profit Margin — Investment Return or Sales ProfitabilitySeptember 7, 2026 · 4 min read · Compare ROI and profit margin — what each measures, when to use which, and how to estimate both with free calculators on Mytulify.ROI Calculator Guide — Measure Return on Investment ClearlySeptember 7, 2026 · 4 min read · Learn how an ROI calculator turns cost and gain (or final value) into ROI %, return multiple, and annualized return — then run the numbers free in your browser.SSY vs PPF — Which Long-Term Savings Plan Fits Your GoalSeptember 6, 2026 · 3 min read · Compare Sukanya Samriddhi Yojana and Public Provident Fund on deposit window, tenure, purpose, and planning math — then estimate maturity with free SSY and PPF calculators on Mytulify.SSY Calculator Guide — Estimate Sukanya Samriddhi Yojana MaturitySeptember 6, 2026 · 4 min read · Learn how an SSY calculator projects Sukanya Samriddhi Yojana maturity from yearly deposits, interest rate, deposit years, and the longer account tenure — then run the numbers free in your browser.SCSS vs FD — Quarterly Payouts or Compounding MaturitySeptember 6, 2026 · 3 min read · Compare Senior Citizen Savings Scheme and fixed deposits on payout style, tenure feel, and planning math — then estimate results with free SCSS and FD calculators on Mytulify.SCSS Calculator Guide — Estimate Senior Citizen Savings Scheme InterestSeptember 6, 2026 · 3 min read · Learn how an SCSS calculator projects Senior Citizen Savings Scheme quarterly interest, total interest over tenure, and principal returned at maturity — then run the numbers free in your browser.NSC vs FD — Annual Compounding or Flexible Bank DepositSeptember 6, 2026 · 3 min read · Compare National Savings Certificates and fixed deposits on compounding style, tenure feel, and planning math — then estimate results with free NSC and FD calculators on Mytulify.NSC Calculator Guide — Estimate National Savings Certificate MaturitySeptember 6, 2026 · 4 min read · Learn how an NSC calculator projects National Savings Certificate maturity, interest earned, and year-by-year compounding — then run the numbers free in your browser.NPS vs EPF vs PPF — Which Retirement Savings Path Fits You?September 6, 2026 · 4 min read · Compare National Pension System, Employee Provident Fund, and Public Provident Fund by cash flow, return style, and planning horizon — then estimate each with free calculators on Mytulify.NPS Calculator Explained — Estimate Your National Pension CorpusSeptember 6, 2026 · 4 min read · Learn how an NPS calculator estimates National Pension System corpus at retirement from monthly contributions, expected return, and tenure — then run the numbers free in your browser.HRA vs Take-Home Pay — What Changes on Your PayslipSeptember 6, 2026 · 3 min read · Compare how House Rent Allowance exemption affects taxable salary versus the broader take-home picture — then estimate exempt vs taxable HRA with free calculators on Mytulify.HRA Calculator Explained — Estimate Your House Rent Allowance ExemptionSeptember 6, 2026 · 3 min read · Learn how an HRA calculator estimates Section 10(13A) House Rent Allowance exemption from basic, DA, HRA received, rent paid, and the metro vs non-metro rule — then run the numbers free in your browser.Gratuity vs EPF — How They Differ at ExitSeptember 6, 2026 · 3 min read · Compare gratuity and Employee Provident Fund as exit-time benefits — payout style, what drives the amount, and how to estimate each with free calculators on Mytulify.Gratuity Calculator Explained — Estimate Your Exit PayoutSeptember 6, 2026 · 4 min read · Learn how a gratuity calculator estimates payout from last drawn salary and years of service using the Payment of Gratuity Act (÷26) or private (÷30) formula — then run the numbers free in your browser.SWP vs SIP — When to Invest Monthly and When to WithdrawSeptember 5, 2026 · 3 min read · Clear comparison of Systematic Investment Plans and Systematic Withdrawal Plans — goals, cash flow direction, and how to use both calculators when planning mutual fund goals.SWP Calculator Guide — Plan Monthly Mutual Fund WithdrawalsSeptember 5, 2026 · 3 min read · Learn how a Systematic Withdrawal Plan (SWP) works, what corpus, withdrawal amount, and expected return really change, and how to estimate remaining balance with a free browser calculator.SIP vs Lumpsum — Which Investment Style Fits Your Cash Flow?September 5, 2026 · 3 min read · Compare SIP and lumpsum mutual fund investing — cash-flow fit, compounding timing, and how to run both scenarios with free online calculators before you decide.SIP Calculator Guide — Estimate Mutual Fund Returns Before You InvestSeptember 5, 2026 · 4 min read · Learn how a SIP calculator works, what expected return and tenure really mean, and how annual step-up SIPs can grow your corpus faster — with a free browser tool.RD vs FD vs SIP — Which Savings Habit Fits Your Goal?September 5, 2026 · 3 min read · Compare recurring deposits, fixed deposits, and mutual fund SIPs — deposit style, risk, liquidity, and when each tool’s calculator helps you plan.RD Calculator Guide — Estimate Recurring Deposit Maturity Before You SaveSeptember 5, 2026 · 3 min read · Learn how a recurring deposit (RD) calculator works, the quarterly compounding formula banks often use, and how to estimate maturity, interest, and total deposits online.PPF vs FD vs SIP — Which Savings Option Fits Your Goal?September 5, 2026 · 4 min read · Compare Public Provident Fund, fixed deposits, and mutual fund SIPs by cash flow, risk, and time horizon — then run the numbers with free PPF, FD, and SIP calculators.PPF Calculator Guide — Estimate Public Provident Fund MaturitySeptember 5, 2026 · 4 min read · Learn how a PPF calculator works, what yearly contribution and tenure mean for maturity, and how to project invested amount and interest with a free browser tool.Lumpsum Calculator Guide — Estimate One-Time Mutual Fund GrowthSeptember 5, 2026 · 3 min read · Learn how a mutual fund lumpsum calculator works, the compound-growth formula behind maturity estimates, and how to project returns from a one-time investment online.Fixed Deposit vs SIP — How to Compare Safe Returns and GrowthSeptember 5, 2026 · 4 min read · Compare fixed deposits and mutual fund SIPs on risk, liquidity, and expected growth — and use free FD and SIP calculators to run side-by-side numbers.FD Calculator Explained — How to Calculate Fixed Deposit MaturitySeptember 5, 2026 · 4 min read · Learn the fixed deposit formula, why compounding frequency changes your payout, and how to estimate FD maturity and interest with a free online calculator.EPF vs PPF — Which Provident Fund Fits Your Savings Plan?September 5, 2026 · 4 min read · Compare Employee Provident Fund and Public Provident Fund by who can join, how you contribute, and how to estimate maturity — then use free EPF and PPF calculators on Mytulify.EPF Calculator Explained — Estimate Your Provident Fund MaturitySeptember 5, 2026 · 4 min read · Learn how an EPF calculator estimates Employee Provident Fund maturity from salary, contribution rates, interest, and years of service — then run the numbers free in your browser.CAGR Explained — How to Calculate Compound Annual Growth RateSeptember 5, 2026 · 3 min read · Understand the CAGR formula, when to use it for funds and businesses, and how to calculate compound annual growth rate instantly with a free online tool.How to Write a Cover Letter That Gets Interviews (With Free AI)July 30, 2026 · 5 min read · Learn what hiring managers actually read in a cover letter, how to tailor one to a job posting, and how to generate a polished draft in seconds with AI.How to Find Duplicate Photos Without Uploading Them (Free Browser Guide)July 27, 2026 · 4 min read · Clean up your camera roll and Downloads folder with a free duplicate photo finder that runs in your browser — perceptual hashing catches similar shots, not just exact copies.5 Freelance Email Templates That Actually Get You Paid (Copy & Paste)July 21, 2026 · 4 min read · Copy-paste freelance emails for invoice reminders, follow-ups, cold pitches, and scope changes — wording that gets replies without sounding pushy.How to Build UTM Links That Actually Track in GA4July 10, 2026 · 2 min read · Learn what each UTM parameter means, how to name campaigns consistently, and how to generate clean tracking links with Mytulify’s free UTM builder.EMI Explained — Calculate Loan Payments Before You BorrowJuly 8, 2026 · 1 min read · Understand how EMI works, what interest really costs over the loan term, and how to compare tenures with a free EMI calculator in your browser.Aspect Ratios for YouTube, Reels & Instagram (Quick Guide)July 5, 2026 · 1 min read · Stop guessing crop sizes. Here’s the aspect ratio cheat sheet for YouTube, Shorts/Reels, Instagram feed, and how to calculate any custom size.

How to use 542+ tools on this site

Each tool is a separate page. The title is the task, the sentence under the title is the scope, and the form is the product. Type the text, choose the file, or enter the numbers you already have. The result stays on that page. You can change one field and compare a second case without starting over.

480 tools run in the browser. The file or the figures stay on your device, which is why those pages are marked private. They work without an account. AI writers and handwriting OCR send the input to a server so a model can run, and the page says so. The free plan includes a small daily limit for those server tools. Pro removes the limit. Do not paste passwords or account numbers into a server tool.

Search from the header when you know the tool name. Open a category when you only know the kind of job. Calculator pages are estimates: a payment, a yard of concrete, or a calorie figure is only as good as the rate, the unit, and the date you typed. PDF and image pages follow the file you upload. If the page never mentions a rule that applies to your bank, school, clinic, or city, treat the output as a draft and check the source that actually governs the decision.

Read the notes under the form before you rely on a number. They repeat the scope, the steps, and the questions people ask. Related tools sit at the bottom when the next step is a different calculation or a different file. The categories below are the whole library.

AI-Powered Tools. AI assistants for developers and job seekers — explain code, generate SQL, write cover letters and interview answers, check résumés for ATS, debug errors, commits, PRs, docs and tests. AI assistants for developers & job seekers. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Handwriting OCR. AI-powered handwriting tools — OCR in 30+ languages, form & table extractors, math to LaTeX, Markdown conversion, and note summarizers. Upload a photo and get editable digital text. OCR, forms, tables, math & notes. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Freelancer Tools. Free client-side tools for freelancers — contracts, proposals, NDAs, rate calculators, quotes, and change orders. No signup, no subscription. Contracts, rates & client docs — free. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

DevOps Tools. Client-side generators and validators for infrastructure, CI/CD and networking — configs, manifests and scripts you can copy straight into your project. Configs, manifests & scripts. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Health & Fitness. Free health and fitness calculators — hydration, macros, heart-rate zones, training and more. Instant, private and running entirely in your browser. Fitness, nutrition & wellbeing. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Text Tools. Browser-based utilities for counting, converting, cleaning, and transforming text. Write, clean & transform text. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Developer Tools. Client-side coding utilities for formatting, converting, encoding and inspecting data. Format, convert & debug code. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Security & Password Tools. Privacy-first, in-browser tools for passwords, hashing, encryption and key generation. Passwords, hashing & crypto. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

PDF Tools. Browser-based tools to merge, split, convert, compress, and edit PDF files. Merge, split & convert PDFs. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Image Tools. Browser-based tools to convert, resize, compress, crop, and edit images. Resize, compress & convert images. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Color Tools. Browser-based color pickers, converters, palette and gradient generators. Pick, convert & build palettes. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Calculators. Financial, health, math, date and everyday calculators that run entirely in the browser. Finance, health & math. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Unit Converters. Instant client-side converters for length, weight, volume, temperature, and other measurement units. Convert any unit instantly. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

SEO & Web Tools. Comprehensive SEO suite — keyword research, technical audits, content optimization, rank tracking, backlinks, internal linking, schema, and AI SEO workflows. Research, audits, schema & AI SEO. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Social Media Tools. Client-side helpers for crafting, styling, and mocking up social media content and posts. Captions, fonts & mockups. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Content Creator Tools. Free browser tools for YouTubers, podcasters & social creators — video editing, script extraction, voiceovers, captions & more. No signup for browser tools; AI script studio uses daily free runs. Video editor, script studio & voiceovers. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Converters & Generators. Client-side data converters and utility generators for developers, students, and everyday users. Data converters & generators. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Home & Trade Calculators. Free home, workshop, electrical, and property calculators — BTU, AC tonnage, lumber, deck, voltage drop, refinance, rental cash flow, and more. Runs in your browser. Home, workshop, electrical & property. Open that category and read the line under each tool name before you click. The line is the job the tool actually does.

Pick the tool whose description matches the input you have. If the description does not mention that input, it is the wrong page. Run the form, read the result next to the labels, and only then copy it into a document, a message, or a spreadsheet.

How to read a result

A calculator answers the question printed on the page. A mortgage page returns principal, interest, tax, and insurance when you enter those amounts. It does not know your lender’s fees, your credit score, or a rate that changes next month. Change the rate, the term, or the down payment and read the new payment next to the old one before you decide. The same habit works for a loan, a retirement contribution, a paint job, or a calorie target: one input at a time, then the line that moved.

Units are part of the answer. A length converter shows both sides of the pair you picked. A concrete page asks for feet or metres because a yard of concrete is a volume, not a length. If the label says per month, do not type a yearly figure in that box. Dates matter on age, pregnancy, countdown, and interest pages: the day you enter is the day the formula uses. Round only after you have the full figure, and keep the same rounding when you compare two cases.

File tools follow the file. A PDF merge keeps page order as you arranged the files. Split and extract keep the pages you selected. Compress makes the file smaller and can soften images inside it. Rotate, crop, watermark, and page numbers change the pages you see, not the words in a scanned image unless the page says it runs OCR. An image resizer changes pixels. A format converter changes the container. Download the result and open it before you send it. If the preview looks wrong, the source file is still on your device and you can run the tool again.

Text tools work on the text in the box. A counter reports words, characters, and sentences for that box only. Case, find-and-replace, and duplicate-line tools rewrite that box. They do not open a document on your computer until you paste. JSON, CSV, and code formatters expect valid input; an error line means the text is not in the shape the tool described. Fix the text or pick the converter that matches the format you actually have.

Search opens a list of every tool name and its one-line description. Type the job, not a slogan: mortgage, merge pdf, word counter, bmi. The match is the name and the description, so a short specific phrase finds the page faster than a long sentence. Category menus are the same library grouped by the kind of work. A tool that is not built yet is marked soon and does not pretend to calculate.

The guide under each tool is the place to check limits. It names the inputs, what the formula leaves out, and the questions people ask before they use the number. Related links are the next tool when the job continues, such as a payment after a loan amount, or a JPG after a PDF page. The blog explains one job in a longer article and links to the tool that does the work. Use the article when you want the reasoning, and the tool when you already have the figures.

Browser tools need a current browser and JavaScript. A very large PDF or image can be slow because it is processed on your machine. Server tools need a connection and count toward the free daily limit. Create an account only if you want that limit lifted. The result on a private page is not stored by the site. Copy what you need, then close the tab if the file was sensitive.