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.

Slope Intercept Form Calculator

Our slope intercept form calculator is a handy tool for finding the equation of a line from any two points that this line passes through. Our calculator shows the coefficients of slope and y-intercept, as well as the x-intercept using the slope intercept formulas

Cups to Teaspoons Converter

Our cups to teaspoons Converter is the perfect tool for knowing the equivalent of cups to teaspoons and vice versa.

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.

BMI Calculator

This tool is perfect for finding a ratio of weight to height and returning a single number. Our BMI calculator shows your BMI and the weight you need to lose if you are overweight.

Litres to Gallon Converter

Our Liter to Gallon converter is a nifty tool that helps you convert the volume of liquids from liters (l) to gallons (gal) or vice versa.

Weeks to Years Converter

Our Weeks to Years Converter is a simple tool for converting weeks to years and years to weeks, all you need to do is enter the number of weeks and click on the convert button.

Sector Area Calculator

Our Sector Area calculator is a handy tool for finding the sector area of a circle and determining its arc length.


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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