Numbriv was built on a simple idea: before you sign a mortgage, take out a loan or plan for retirement, you should be able to see the numbers clearly, for free, without handing over your email address.
Accurate
Every calculator uses the standard formulas lenders and financial planners use, and each page shows its formula.
Private
Calculations run entirely in your browser. We never see or store the numbers you enter.
Free
No sign-up and no paywall. The site is supported by advertising and clearly labeled partner links.
Up to date
We review rates, limits and assumptions regularly and show the last-updated date on every page.
How we check our calculators
Before a calculator goes live, we test it against worked examples and compare results with established industry calculators. Guides are written in plain English and reviewed whenever rules or typical rates change.
How we make money
Numbriv shows ads served by Google AdSense and may earn a commission when you use a partner link, such as a rate-comparison site. Partner links are always labeled as sponsored, and they never change how our calculators work or what their results show.
Not financial advice
Our tools are for education and planning. For decisions about your own situation, speak with a licensed professional. Read our financial disclaimer for details.
Get in touch
Found a mistake or have an idea for a new calculator? Contact us. We read every message.