Math & Calculators

From quick arithmetic to scientific, financial and statistical calculators.

Advanced Calculator

Scientific functions including trig.

Compute exact age from birth date.

Average / Mean Calculator

Compute mean of numbers.

Calculate body mass index.

Calculate basal metabolic rate.

Basic Calculator

Add, subtract, multiply and divide.

Circle Area Calculator

Area & circumference from radius.

Compound Interest Calculator

Calculate compound interest over time.

Cube Volume Calculator

Volume & surface of a cube.

Cylinder Volume Calculator

Volume of a cylinder.

Daily Calorie Needs

Estimate daily calorie requirements.

Date Add/Subtract Days

Add or subtract days from a date.

Date Difference Calculator

Days between two dates.

Discount Calculator

Compute final price after discount.

Factorial Calculator

Compute n! for any non-negative integer.

Fibonacci Generator

Generate first N Fibonacci numbers.

GCD & LCM Calculator

Compute GCD and LCM of two numbers.

Ideal Weight Calculator

Estimate ideal body weight.

Loan Payment Calculator

Monthly payment for any loan.

Mortgage Calculator

Monthly mortgage cost estimator.

Percentage Change

Compute percentage change between two values.

Percentage of a Number

Prime Factorization

Factor a number into primes.

Prime Number Checker

Check if a number is prime.

Quadratic Equation Solver

Solve ax²+bx+c=0.

Rectangle Area Calculator

Area & perimeter of rectangle.

Right Triangle Calculator

Pythagoras' theorem solver.

Sales Tax Calculator

Add sales tax to a price.

Savings Goal Calculator

How much to save monthly to hit a goal.

Simple Interest Calculator

Calculate simple interest.

Sphere Volume Calculator

Volume & surface from radius.

Standard Deviation Calculator

Mean, variance and stdev of a dataset.

Time Difference Calculator

Difference between two times.

Calculate restaurant tips quickly.

Triangle Area Calculator

Area from base & height.