# Your life in 3100 free calculators

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

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.

*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.

### Confidence interval

The confidence interval calculator finds the confidence level for your data sample.

With this test grade calculator, you'll quickly determine the test percentage score and grade.

### Log

The log calculator (logarithm) calculates the value of a logarithm with an arbitrary base.

### Sales tax

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

### Scientific notation

The scientific notation calculator converts any decimal to scientific notation.

### Square footage

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

### Percentage increase

Percentage increase calculator calculates the increase of one value to the next in terms of percent.

### 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. 