Free Online Tools

25 converters · 13 calculators · 11 generators · 10 text tools · 10 business tools · 20 developer tools · 14 SEO tools · 6 fun tools · 20 image tools · 1 downloader tools · 7 icon libraries · no signup needed

Unit Converters

All 25 converters →
Length Converter Convert meters, feet, inches, miles, km and more. 12 units · 132 conversions Area Converter Convert square meters, acres, hectares, sq feet and more. 10 units · 90 conversions Weight Converter Convert kg, lbs, ounces, stone, grams and more. 11 units · 110 conversions Time Converter Convert seconds, minutes, hours, days, weeks, years and more. 12 units · 132 conversions

Calculators

All 13 calculators →
Percentage Calculator Calculate percentages, find what % one number is of another, and compute % change. EMI Calculator Calculate monthly EMI, total interest, and full repayment schedule for any loan. Age Calculator Find your exact age in years, months, and days. See your next birthday countdown. Date Difference Calculator Find the exact number of days, weeks, months, and years between two dates.

Business Tools

All 10 tools →
Invoice Generator Create professional invoices with India GST (CGST/SGST/IGST) or generic international billing — download as PDF or print. Quotation / Estimate Generator Create professional price quotations and estimates with India GST or generic international format — download as PDF or print. Salary Slip / Payslip Generator Create professional salary slips / payslips with earnings, deductions, and net pay calculation — download as PDF or print. Offer Letter / Appointment Letter Generator Create professional offer letters and appointment letters with company letterhead — download as PDF or print.

Generators

All 11 generators →
Password Generator Generate strong, random passwords with custom length and character sets. QR Code Generator Generate QR codes for URLs, text, or contact info. Download as PNG. Color Palette Generator Generate tints, shades, and harmonious color palettes from any base color. Hash Generator Generate SHA-256, SHA-512, SHA-1, and MD5 hashes from any text.

Text Tools

All 10 text tools →
Word Counter Count words, characters, sentences, paragraphs and estimate reading time instantly. Case Converter Convert text between lowercase, UPPERCASE, Title Case, camelCase, snake_case, kebab-case and more. Base64 Encode / Decode Encode text or files to Base64 and decode Base64 strings back to plain text instantly. URL Encode / Decode Percent-encode special characters in URLs or query strings, and decode them back instantly.

Image Tools

All 20 image tools →
Image Converter Convert any image to PNG, JPG, or WEBP instantly — no upload, runs in your browser. WEBP to PNG Convert WEBP images to PNG format instantly — free, private, no upload needed. PNG to JPG Convert PNG images to JPG — adjust quality and background colour for transparency. WEBP to JPG Convert WEBP images to JPG format instantly — adjust quality, free and private.

Developer Tools

All 20 dev tools →
JSON Formatter & Validator Format, minify and validate JSON with syntax highlighting and error detection. Regex Tester Test regular expressions with live match highlighting, flags, and captured groups. HTTP Status Codes Look up any HTTP status code with its meaning, description, and use cases. Cron Expression Explainer Translate cron expressions into plain English and see the next scheduled run times.

SEO Tools

All 14 SEO tools →
UTM Builder Build UTM-tagged URLs for Google Analytics campaign tracking. SERP Preview Tool Preview how your page will look in Google search results with live character and pixel counters. Meta Tag Generator Generate SEO meta tags: title, description, robots, viewport, and charset in one click. Schema Markup Generator Generate JSON-LD schema markup for articles, FAQs, products, breadcrumbs, and more.

Fun Tools

All 6 fun tools →
Typing Speed Test Measure your typing speed in WPM and accuracy with a timed passage test. Coin Flip Flip a virtual coin and get heads or tails — with a satisfying 3D spin animation. Dice Roller Roll virtual dice — d4, d6, d8, d10, d12, d20 — with animated rolls and totals. Spin the Wheel Spin a customizable wheel to pick a random winner — great for decisions, giveaways, and games.

Icon Libraries

All 7 libraries →
Bootstrap Icons 2,000+ high-quality open source icons for Bootstrap and beyond. 2,000+ icons · MIT Tabler Icons 5,700+ free and open-source pixel-perfect icons. 5,700+ icons · MIT Font Awesome Free 2,000+ free icons across solid, regular, and brand styles. 2,000+ icons · CC BY 4.0 (icons) / SIL OFL (fonts) / MIT (code) Material Symbols 3,000+ icons with adjustable weight, fill, grade, and size axes. 3,000+ icons · Apache 2.0

Downloader Tools

All 1 downloader tools →
YouTube Thumbnail Downloader Paste any YouTube link to preview and download its thumbnail in every available resolution, up to full HD.

Why Use YoTools?

Fast, accurate, free tools with no account required and no ads. Nearly everything runs instantly in your browser — no personal data is ever sent to any server.

What Tools Are Available?

Unit converters cover 221+ units across length, weight, temperature, pressure, energy, data, and more. Calculators handle percentage, EMI loan, GST, age, date, compound interest, and statistics. Generators include password, QR code, UUID, color palette, hash, Lorem Ipsum, and random numbers. Text tools let you count words, convert case, encode/decode Base64 & URLs, and compare text diffs. Business tools generate professional invoices, quotations, salary slips, and HR letters. Developer tools include a JSON formatter & validator, JWT decoder, regex tester, CSS gradient/box-shadow/flexbox generators, CSS/HTML/JS minifiers, favicon generator, Markdown previewer, and JSON↔CSV converter. SEO tools include a UTM builder, SERP preview, meta tag generator, Open Graph generator, schema markup generator, robots.txt generator, hreflang generator, redirect generator, XML sitemap generator, meta tag analyzer, heading structure checker, and keyword density checker. Image tools convert between WEBP, PNG, JPG, JFIF, and SVG formats — all in-browser. Downloader tools let you preview and download thumbnails from platforms like YouTube in every available resolution. Fun tools include a typing speed test, coin flip, dice roller, spin the wheel, and more. Icon libraries let you search and copy icons from Feather, Lucide, Bootstrap, Tabler, Remix, Font Awesome, and Material Symbols.