All Tools
Browse our full collection of free, accurate online tools
BMI Calculator
The Number That Launched a Thousand Diets — And Why a BMI Calculator Is More Useful Than You Think Few health…
Use Tool →Tip Calculator
How a Tip Calculator Quietly Transformed Our Restaurant Staff's Night-End Routine Last spring, I started cons…
Use Tool →Fuel Efficiency Converter
What Is a Fuel Efficiency Converter and Why You Actually Need One Fuel efficiency numbers are deceptively con…
Use Tool →Shoe Size Converter
Why Shoe Sizing Is a Nightmare — and How an Online Converter Fixes It If you have ever ordered shoes from a J…
Use Tool →Cooking Converter
Why Kitchen Math Ruins Recipes (And What Actually Fixes It) You're halfway through a recipe when you hit the …
Use Tool →Fraction to Decimal
What Does a Fraction to Decimal Converter Actually Do? A Fraction to Decimal online tool takes any fraction y…
Use Tool →Percentage Calculator
Why You Probably Need a Percentage Calculator More Than You Think Here's a moment most of us have experienced…
Use Tool →Binary Converter
Binary Converter: The Essential Tool for Working with Machine-Level Data Every piece of data that flows throu…
Use Tool →Roman Numeral Converter
What Is a Roman Numeral Converter and Why Would You Actually Need One? Roman numerals show up in more places …
Use Tool →Number to Words
The Day a Spreadsheet Saved My Grandmother's Will My grandmother had been writing checks by hand for sixty-th…
Use Tool → 🔐Base64 Encoder / Decoder
Instantly encode any text to Base64 or decode Base64 strings back to readable text — with full UTF-8 and Unic…
Use Tool → 🖼️Base64 to Image Converter
Paste any Base64 string or data URI and instantly preview the decoded image, download it as PNG/JPG/GIF/SVG/W…
Use Tool → 📤Image to Base64 (Data URI) Generator
Drop any image and instantly get a Base64 data URI you can paste directly into HTML img tags, CSS background-…
Use Tool → 🔗URL Encoder / Decoder
Instantly percent-encode or decode URLs and query parameters with full-component and form-encoding modes — no…
Use Tool → 🧬MD5 Hash Generator
Generate an MD5 checksum from any text or file entirely in your browser — no uploads, no servers, instant fin…
Use Tool → 🛡️SHA-256 Hash Generator
Compute SHA-256 hashes of any text or file directly in your browser using the Web Crypto API — no uploads, no…
Use Tool → 🔢Multi-Hash Generator (MD5 / SHA-1 / SHA-256 / SHA-512)
Hash any text or file content across MD5, SHA-1, SHA-256, and SHA-512 simultaneously — compare all four diges…
Use Tool → 🧩Base64URL Encoder / Decoder
Convert plain text to and from URL-safe Base64 — the format used in JWTs, OAuth tokens, and modern APIs — wit…
Use Tool → ♻️Hex / Base64 / Text Converter
Instantly convert between hexadecimal, Base64, and raw text in any direction — byte-accurate, offline, no lib…
Use Tool → 🪙JWT Decoder
Instantly decode any JSON Web Token right in your browser — see the header algorithm, payload claims, and exp…
Use Tool → 🗝️HMAC Generator (SHA-256 / SHA-1 / SHA-512)
Generate keyed HMAC signatures using SHA-256, SHA-1, or SHA-512 — in hex or Base64 output — directly in your …
Use Tool → ✅File Hash Checksum Verifier
Drop any file into this offline tool to instantly compute its MD5, SHA-1, SHA-256, SHA-384, or SHA-512 hash, …
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