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Free Calculators and Converters

An extensive collection of free, highly-rated online calculators and converters covering finance, construction, education, health, cooking and math for everyday use.

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Financial Calculators

A suite of financial calculators to assist with projections for savings, investments, loans, mortgages and small business calculations.

Featured Conversions

A series of individual converters for popular weight, length, height, area and energy units.

Health

A small collection of health calculators, from BMI and BMR through to pregnancy and exercise.

Handy and Fun

A collection of handy calculators for DIY construction projects as well as math calculators and a selection of tools for calculating dates.

Cooking Calculators

A suite of recipe calculators to help you with converting between metric and imperial units when baking or cooking.

Unit Conversions

A series of unit converters for area, energy, fuel consumption, length & distance, volume, weight and more.

Featured Articles

Why I've Chosen Ezoic as a Partner

People often ask me how I manage to fund my website, so I thought I'd write a little article about this today. To be able to dedicate a large amount of time to a project like this, and cover the costs associated with it, you need to be able to find a way to fund it...


Future Value Formula And Calculator

The future value formula helps you calculate the future value of an investment (FV) for a series of regular deposits at a set interest rate (r) for a number of years (t).Using the formula requires that the regular payments are of the same amount each time, with the resulting value incorporating inte...


Compound Interest Formula - Explained

An in-depth look at the compound interest formula as we break down how to calculate compound interest. The concept of compound interest is that interest is added back to the principal sum so that interest is earned on that added interest during the next compounding period.


Are the calculators on our site free to use?

Yes, all the online calculators on The Calculator Site are free for you to use at your convenience. Our website is funded by the advertising we feature on our pages.

We hope you find our calculators useful. You can learn more about The Calculator Site and the causes we support (tree planting) on our about page.