Welcome to That Calculator

We are here to help you Calculate with ease, and find 'that calculator' you need!
From simple math to complex calculations, we've got you covered.


Popular calculators

Check out some of our popular calculators.

Ounces to Pounds Converter

Our ounces to pounds Converter is the perfect tool for converting ounces to pounds and vice versa.

Pregnancy Due Date Calculator

Start your countdown to your due date with our Pregnancy Due Date Calculator. Waiting for a baby is one of the most exciting times in life. It's no wonder you want to count down the days until your family grows.

Mins to Hours Calculator

Our mins to hours converter is a quick and easy way to convert minutes to hours and vice versa. If you have been looking for a simple way to convert hours to minutes or mins to hours, this calculator is for you.

Slope Calculator

Do you want to calculate slope? Our slope calculator helps you easily calculate the slope of a line or curve. Our slope calculator will also show you the Y-intercept, Line equation, Angle with X-axis, Slope as a Percentage, Distance between two points, and more.

Percentage Change Calculator

Our percentage change calculator will help you calculate the percentage change between two values, provide the two values and our calculator will do the rest.

Bar to Psi Conversion

Our Bar to Psi converter is the perfect tool to convert pressure from bar to psi or vice versa quickly.

Area of a Triangle Calculator

Our Area of Triangle calculator is a quick and easy way to calculate the area of a given triangle using its Base and Height, Three Sides, Two Sides and Included Angle, or Two Angles and Included Side.

Circumference and Area of a Circle Calculator

Our Circumference and Area of a Circle Calculator is the best tool for finding the Circumference and Area of a Circle.


At ThatCalculator.com, our mission is to provide a one-stop hub for all your calculation needs. We believe that everyone deserves easy access to tools that make calculations simple and efficient. Learn more


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