Tiny ToolkitTiny Toolkit

Free Online Calculators & Math Tools

Fast, accurate calculators for everyday math. Calculate percentages, tips, BMI, age, dates, and convert units instantly.

Percentage Calculator

Calculate percentages, increases, decreases with ease.

Tip Calculator

Calculate tips and split bills easily among any number of people.

BMI Calculator

Calculate your Body Mass Index and get health insights with metric and imperial units.

Age Calculator

Calculate your exact age in years, months, and days. Find time until next birthday and fun life statistics.

Date Calculator

Calculate days between dates, add or subtract time, and get working days. Perfect for planning and deadlines.

Unit Converter

Convert between different units of measurement including length, weight, temperature, volume, area, and time.

Random Number Generator

Generate random numbers with custom ranges, decimals, and count. Perfect for games, statistics, and decisions.

About Online Calculators

Our collection of free online calculators helps you solve everyday math problems quickly and accurately. Whether you're calculating a tip, checking your BMI, or converting units, our tools are designed to be simple, fast, and reliable.

Popular Calculator Types

Financial Calculators

Calculate money-related values like tips, discounts, and percentages for everyday financial decisions.

  • Tip Calculator - Split bills and calculate gratuity
  • Percentage Calculator - Find percentages, increases, decreases
  • Discount and markup calculations
  • Tax and interest calculations

Health & Fitness Calculators

Monitor your health with BMI calculations and fitness metrics for better wellness tracking.

  • BMI Calculator - Body Mass Index with health insights
  • Metric and imperial unit support
  • Weight category classifications
  • Health recommendations based on results

Date & Time Calculators

Calculate ages, dates, and time differences for planning and tracking important events.

  • Age Calculator - Exact age in years, months, days
  • Date Calculator - Days between dates, add/subtract time
  • Working days calculator
  • Birthday and anniversary tracking

Conversion Calculators

Convert between different units of measurement for cooking, travel, science, and more.

  • Length, weight, and temperature conversion
  • Volume and area conversions
  • Metric to imperial and vice versa
  • Time unit conversions

Why Use Our Calculators?

  • Fast & Accurate: Instant calculations with precise results
  • No Sign-Up: Use all tools completely free without registration
  • Mobile Friendly: Works perfectly on all devices
  • Privacy First: All calculations happen in your browser
  • Always Available: Access anytime, anywhere, no installation needed
  • Simple Interface: Clean, intuitive design for quick calculations

Common Use Cases

Everyday Life

  • Splitting restaurant bills
  • Calculating shopping discounts
  • Converting recipes for cooking
  • Planning travel itineraries

Work & Business

  • Financial planning and budgeting
  • Project deadline calculations
  • International unit conversions
  • Data analysis and statistics

School & Education

  • Math homework help
  • Science unit conversions
  • Grade percentage calculations
  • Study time planning

Health & Fitness

  • BMI and health tracking
  • Age and milestone calculations
  • Fitness goal planning
  • Nutrition measurements

💡 Calculator Tips

  • Bookmark your frequently used calculators for quick access
  • Double-check important calculations for accuracy
  • Use the copy button to save results for later
  • Try different calculator types for comprehensive solutions
  • All tools work offline once loaded