Contact me

Alastair Hazell
Office H0210,
265-269 Kingston Road,
London SW19 3NW
United Kingdom

You can find out about The Calculator Site by visiting my about page. If you have a question or comment about my web site, please use the form below to get in touch with me.

Important note: please do not ask me to work out specific, personalised calculations for you as this is not a service that I am able to provide - I simply develop the tools to help guide you. In addition, please do not ask me for financial or medical advice - please seek that from a qualified financial/medical advisor.

If you would like to send me a suggestion for my website, I would be delighted to hear from you.

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:

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.

22 Feb 17

Creation of an IRR calculator.

10 Nov 16

Addition of a new fractions calculator.

9 Nov 16

Addition of a data storage converter, as well as individual conversion pages.