Your life in 2948 free calculators

An example - BMI Calculator
Height
ft
in
Weight
lb
BMI
BMI Prime
Advanced features
Are you an athlete?
No
Sex
Female
Age
Percentile
About us

In a surprisingly large part, our reality consists of calculable problems. Should I buy or rent? What's my ideal calorie intake? Can I afford to take this loan? How many lemonades do I need to sell in order to break even? Often we don't solve these problems, because we lack knowledge, skills, time or willingness to calculate. And then we make bad, uninformed decisions.

Omni Calculator is here to change all that - we are working on a technology that will turn every* calculation-based problem trivial to solve for anyone.

read more about us

*within reason

The most popular calculators

p-value

The p-value calculator can help you find the p-value and evaluate how compatible your data is with the null hypothesis.

Test grade

With this test grade calculator you'll easily find out the test percentage score and grade.

Sales tax

Sales tax calculator works out the tax imposed on the sale of goods and services.

Square footage

Square footage calculator turns length and width into an area and converts to/from multiple units.

Exponent

Exponent calculator helps you find the result of any base raised to a positive or negative exponent.

Percentage

Simple percentage calculator is a generic percentage-based problem solver.

Square root

Square root calculator helps you find the square root of any positive number.

Circumference

Use this free circumference calculator to find the area, circumference and diameter of a circle.

Slope

The slope calculator helps find the slope of any line through two given points.

Pythagorean theorem

Pythagorean theorem calculator helps you find out the length of a missing leg or hypotenuse of a right triangle.
main background