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.

Kg to Lbs Converter

Our kilogram to pound converter is a simple tool that changes weight or mass measurements from the metric kilograms (kg) to the imperial pounds (lbs).

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.

Due Date Calculator

The due date calculator (also called a pregnancy calculator) helps answer the question: "When is my baby due?" Our tool estimates the due date for your baby's birth.

Percentage Calculator

Our percentage calculator is the perfect tool to calculate what percent of X is Y, find the total based on a value and percentage, or determine the value based on the total and percentage.

MB to GB Converter

Our MB to GB converter is the perfect tool to convert megabytes to gigabytes and vice versa quickly. It's a simple tool for anyone who needs to convert MB to GB.

Days Between Dates Calculator

Our Days Between Dates Calculator helps you figure out how many days lie between two different dates. Are you wondering how much time has passed since an important event happened? Or maybe you need to know how many days remain until an upcoming occasion?

Percentage Difference Calculator

Our percentage difference calculator is here to help you calculate the percentage difference between two numbers, provide the two values and our calculator will do the rest.

Feet and Inches Calculator

Have you ever struggled with adding up feet and inches or figuring out the area of your room? Well, you're in luck! A Feet and Inches Calculator is here to save the day.


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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