About Moxu Tools

Moxu makes small, useful tools for jobs that shouldn't be difficult. This site is the free part: 29 calculators and 6 file tools (CSV duplicates, image resizer, merge PDF) that do one job each and do it clearly.

What makes them different

• Private by design. The calculations run in your browser. There is no account, and what you type is never sent to us.
• They show their working. Each result comes with a plain-English sentence and the formula behind it, so you can check it and learn from it.
• They're tested. Every calculator is checked against answers worked out by hand, plus thousands of random and nonsense inputs, so it shows a helpful message instead of a wrong number.

What they are not

These calculators do arithmetic. They are not financial, tax, legal or accounting advice. For decisions that matter, check the current rules on GOV.UK or with a qualified adviser.

Something wrong?

If you think a calculation is wrong, please tell us which tool and which numbers you used. Getting the maths right is the whole point. Email info@moxutools.com.