All tools
Every utility on TinyToolStudio runs in your browser. Free to use, no account needed.
Secret Message Encryptor/Decryptor
Lock a private message with a secret password only you and the recipient know.
Word Counter
Count words, characters, sentences and paragraphs instantly.
Readability Score Checker
Check Flesch Reading Ease, Flesch–Kincaid Grade Level, and Gunning Fog Index instantly.
Case Converter
Convert text to upper, lower, title, camelCase, and more.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text by words or paragraphs.
JSON Formatter & Validator
Format, minify, and validate JSON with clear error messages.
Base64 Encode / Decode
Encode and decode Base64 strings instantly in your browser.
URL Encode / Decode
Encode and decode URL strings and query parameters.
Binary to Text Converter
Convert text to 8-bit binary and binary back to text.
Unicode Converter
Convert text to Unicode code points and code points back to text.
Password Generator
Generate strong random passwords with Web Crypto.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes instantly in your browser.
Color Contrast Checker
Check WCAG contrast ratio between foreground and background colors in real time.
BMI Calculator
Calculate Body Mass Index in metric or imperial units.
Body Fat Percentage Calculator
Estimate body fat percentage using the U.S. Navy circumference method.
Calorie & Macro Calculator (TDEE)
Calculate your TDEE and daily calorie and macronutrient targets for losing, maintaining, or gaining weight.
Calorie Deficit Calculator
Find the daily calorie deficit you need to reach a goal weight by a target date.
Protein Intake Calculator
Find your recommended daily protein intake in grams based on weight, activity, and goal.
Ideal Body Weight Calculator
Compare ideal body weight estimates from Devine, Robinson, Miller, and Hamwi formulas.
Age Calculator
Calculate exact age in years, months, and days from date of birth.
Date Duration Calculator
Find the exact duration between two dates in years, months, days, and more.
Percentage Calculator
Find percentages, add or subtract a percent from an amount, and extract tax from inclusive totals.
Tip Calculator
Calculate tip, total bill, and per-person share with preset or custom percentages.
Invoice Generator
Create a professional invoice with line items, tax, and instant PDF download — no signup.
Loan EMI Calculator
Calculate monthly EMI with diminishing or flat interest, total interest, and amortization.
GST Calculator
Calculate GST instantly on any amount. Add or remove GST with full CGST/SGST breakdown.
Income Tax Calculator (Old vs New Regime)
Compare your income tax liability under old vs new tax regime for FY 2025-26. Find out which regime saves you more money.
Unit Converter
Convert length, weight, temperature, volume, and speed units instantly.
Unit Price Comparator
Compare prices per unit across products to find the cheapest, best-value option.
Stopwatch & Timer
Stopwatch with lap recording and a countdown timer with an audible alert.
Color Converter
Pick or type a color in HEX, RGB, HSL, or RGBA and convert between all formats instantly.
Markdown Previewer
Type Markdown on the left and see a live HTML preview on the right.
QR Code Generator
Type or paste any text or URL and get an instant QR code with PNG download.
Text Diff Checker
Compare two text blocks side by side with line or word diff highlighting.
Text to Speech
Paste text and hear it read aloud with voice, speed, and pitch controls.
Random Name Picker / Spinner Wheel
Enter names or options and spin a colorful wheel to pick a random winner.
Decision Wheel (Yes/No Spinner)
Spin a wheel to make a decision — Yes/No, Heads/Tails, Rock-Paper-Scissors, or your own custom options.
Random Team Generator
Paste a list of names and randomly split them into balanced teams with one click.