Apps

Free web tools that turn complicated questions into clear, useful answers. Nothing to pay, no account to create, and the numbers you type are worked out in your own browser rather than sent to us.

Financial

Seven calculators for questions about money: saving towards a goal, how far it can grow, whether it will last, what rising prices do to it, and how many years it may need to cover.

See the seven financial calculators →

More categories are coming

Right now there is one category, with seven calculators in it. We would rather have a small number of tools that genuinely work than a long list that mostly does not.

If there is something you wish existed, tell us about it. It is the most useful thing you can send us.

What every tool here has in common

• Free, with no sign-up. No account, no trial, no premium version held back.
• Your figures stay with you. The arithmetic runs in your browser. We do not receive what you type, so there is nothing for us to store or lose.
• Plain language first. Technical terms are explained rather than assumed.
• Honest about limits. Every tool says what it does not account for. A result is a projection, not a promise.

These tools are for information and planning. They are not financial, tax or legal advice — see our Disclaimer.