About The Calculator Site

Who owns The Calculator Site?

The Calculator Site is operated by Alastair Hazell, an entrepreneur based in East Sussex in the United Kingdom. The website was founded in 2004 as a fun hobby and has since developed into a very popular tool. The website has grown in popularity, particularly so in the last few years. Traffic has risen from around 3,500 visitors per day in early 2012 to over 70,000 visitors per day in 2016.

What is The Calculator Site?

The Calculator Site contains useful calculation and converter tools for every day use. Whether you're looking to work out the compound interest on your savings, convert between two metric or imperial measurement units or calculate your BMI, The Calculator Site has tools to help. Use of all of the converters and calculators is subject to terms and conditions.

Why is there advertising on this website?

The small amount of advertising revenue generated by this website goes towards paying for the hosting, bandwidth and continued development of the website. The adverts displayed on the website are contextually served by Google. If you do spot any ads that you consider to be inappropriate, please contact me.

Your feedback

I always love to hear feedback about my website. Whether you would like to make a suggestion of an extra unit or category of conversion that you would like to see, or whether you have any ideas on how to make the site better for you, please get in contact with me. You can do this by using my feedback page.

Log of calculator updates

Updates to calculators icon

I am constantly improving and adding functionality to my calculators, often based upon suggestions from people like you. The latest major updates:

Nov 18

Launch of a simple interest calculator following feedback requests.

April/May 18

Two new calculators launched - LED bulb calculator and pregnancy calculator as well as updates to the loan calculator.

1 Feb 18

Launch of a WHR calculator to complement the BMI and BMR calculators.

14 Nov 17

Creation of a days between dates calculator.

5 Aug 17

Launch of a cool new birthday calculator. Give it a try!

17 Mar 17

Addition of a CAGR calculator, following a user request.