About Tally Calculators

Tally Calculators is a free collection of online calculators for money, health, maths, home projects and everyday life. Every tool is free, works on phones and computers, and needs no registration.

How our calculators are built

Each calculator uses a published or widely accepted formula, which we explain on the calculator page. Tax, payroll and similar tools use the rates and limits for the year shown on the page, and we update them when official figures change. Before a calculator goes live we compare its results with independent worked examples.

What our results are, and are not

Results are estimates for general information. They are not financial, tax, legal or medical advice, and they cannot account for every personal circumstance. For important decisions, check the figures with a qualified professional. Health risk topics where a single number would be misleading are explained in plain language instead of being turned into a score.

Found a mistake?

Accuracy matters to us. If a result looks wrong or a page is out of date, please contact us with the calculator name and the numbers you entered, and we will check it.