Calculators & Converters
Practical calculators: BMI, percentage, age calculator, and unit converters
Essential calculators and converters for daily use. From health metrics like BMI to mathematical calculations and unit conversions, these tools provide quick and accurate results.
All Calculators & Converters
BMI Calculator
Calculate Body Mass Index with health category indication
Percentage Calculator
Calculate percentages, percentage increase/decrease, and more
Unit Converter
Convert between length, weight, temperature, and volume units
Age Calculator
Calculate age from birth date with days, months, and years
Currency Converter
Convert between 15 major currencies with real-time exchange rates
Date/Time Calculator
Calculate date differences, add/subtract days, and find business days
Discount Calculator
Calculate discounts, sale prices, and savings amounts
Tip Calculator
Calculate tips and split bills among multiple people
Loan Calculator
Calculate monthly loan payments, total interest, and amortization
Compound Interest Calculator
Calculate investment growth with compound interest over time
Time Zone Converter
Convert time between different world time zones
Roman Numeral Converter
Convert between Arabic numbers and Roman numerals
Number Base Converter
Convert between Binary, Octal, Decimal, and Hexadecimal
Calorie Calculator
Calculate daily caloric needs (BMR/TDEE) based on activity level
GPA Calculator
Calculate Grade Point Average with weighted and unweighted options
Fuel Cost Calculator
Calculate trip fuel expenses based on distance and fuel efficiency
Tax Calculator
Calculate sales tax, VAT, and total amounts
Mortgage Calculator
Calculate home mortgage payments with amortization schedule
Speed Converter
Convert between mph, km/h, knots, and meters per second
Data Storage Converter
Convert between Bytes, KB, MB, GB, TB, and larger units
Why Use Calculators & Converters?
Our calculators & converters are designed with privacy and performance in mind. All tools run entirely in your browser - no data is sent to our servers.
- 100% Client-Side: Your data never leaves your browser
- No Registration Required: Start using tools immediately
- Privacy-Focused: Zero tracking, zero servers - all 20 tools
- Fast & Reliable: Instant results with modern web technologies