Free financial calculators for the US, UK, Canada & Australia

What is Finance Calc App?

Finance Calc App is a free suite of 59 financial calculators and 53 plain-English guides covering mortgages, debt, income and tax, savings, investing, and retirement. Most calculators online are built for one country and assume US tax rules. Ours are localized for the four major English-speaking markets — the United States, United Kingdom, Canada, and Australia — so the brackets, thresholds, and terminology match where you actually live.

Who it's for

It's for people who want a straight answer to a money question — "what would my monthly payment be?", "how much of this bonus do I keep?", "how long until this debt is gone?" — without creating an account, handing over an email, or being funneled toward a product. If you can type a few numbers, the tools do the rest, and every result comes with an explanation of the maths behind it.

How we keep it accurate

Every tax figure is taken straight from the relevant government source — the IRS, HMRC, CRA, and ATO — and brackets are refreshed within two weeks of each country's official publication. Every formula is documented on our methodology page, and we publish a full editorial policy so you can hold us to it. We are not licensed financial, tax, or legal advisers; the calculators are educational tools that produce estimates, not personalized advice. For decisions that turn on your specific circumstances, talk to a qualified professional.

Your privacy

Calculations run entirely in your browser. The numbers you type are never sent to a server, stored, or shared — there's nothing to sign up for and nothing to install. Read more in our privacy policy.