Financial
Mortgages, loans, investments, retirement, and more
Free Online Calculators
Over 200 calculators for finance, fitness, math, and everyday life — embed any calculator on your site →
CalcMaster is a free online calculator suite with 200+ tools for finance, fitness, math, and everyday life. Whether you need to calculate a mortgage payment, check your BMI, solve an equation, or convert units — every calculator is free, instant, and works on any device. No signup, no ads tracking, no fluff.
Fitness & Health
BMI, calories, body fat, pregnancy, and more
Math
Scientific, statistical, and equation solvers
- Scientific Calculator
- Basic Calculator
- Fraction Calculator
- Percentage Calculator
- Random Number Generator
- Triangle Calculator
- Standard Deviation
- Logarithm Calculator
- Square Root Calculator
- Exponent Calculator
- Factorial Calculator
- Fibonacci Calculator
- Prime Number Checker
- LCM / GCF Calculator
- Equation Solver
Time & Date
Age, time, date conversions, and hours
Everyday Tools
Tip, currency, fuel, unit conversion, and daily utilities