Math & Number Tools
Collection of free & secure math & number tools. Your data stays private inside your browser — zero data saved on servers.
Math & Number Tools
All Math & Number Tools
Scientific Calculator
A full-featured scientific calculator with trig functions, logarithms, exponents, and more.
Amortization Schedule Generator
Generate a complete loan amortization schedule showing principal and interest per month.
Area Calculator
Calculate the area of circles, rectangles, triangles, squares, and other shapes.
Average Calculator
Calculate the average, mean, median, and mode for any set of numbers.
Factorial Calculator
Calculate the factorial (n!) of any number instantly with a step-by-step breakdown.
Fibonacci Sequence Generator
Generate the Fibonacci sequence up to any number of terms instantly.
Fraction to Decimal Converter
Convert any fraction to its decimal equivalent and decimal numbers to fractions.
GCD & LCM Calculator
Find the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of any numbers.
Number to Words Converter
Convert any number into its English words representation — perfect for cheques.
Percentage Change Calculator
Calculate the percentage increase or decrease between any two numbers instantly.
Prime Number Checker
Check if any number is prime or composite and find its prime factors instantly.
Random Number Generator
Generate one or multiple random numbers within any range you specify.
Ratio Calculator
Calculate, simplify ratios, and find missing values in proportions instantly.
Roman Numeral Converter
Convert any number to Roman numerals and vice versa instantly.
Statistics Calculator
Calculate mean, median, mode, standard deviation, and variance for any dataset.