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The Calculator App — 130+ Free UK & US Calculators
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The Internet's Most Searched
Financial Edition
The money questions everyone Googles — answered with the actual numbers.
How much is a £200,000 mortgage per month?
How much is a £300,000 mortgage per month?
How much is a £250,000 mortgage per month?
How much is a £350,000 mortgage per month?
What salary do I need to buy a £400,000 house?
How much deposit do I need for a £250,000 house?
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Not Just A Claim
Don't Trust Us. Check For Yourself.
No badge, no certification logo, no "we care about the planet" paragraph. Just things you can verify in under a minute — open DevTools, check the Network tab, see it yourself.
Runs In Your Browser
Every calculation happens on your device. Your numbers never touch a server — there's nothing to send, so there's nothing to leak.
No Account, No Bank Login
No sign-up, no email, no linking your bank. Use every calculator without creating anything or handing over anything.
No Tracking Scripts
No ad pixels, no cross-site trackers, no fingerprinting. Open the page source or your browser's tracker blocker — count them yourself.
Verify It Yourself
Press F12, open the Network tab, use a calculator. Watch what actually gets sent. We'd rather you check than take our word for it.
Formulas Shown, Not Hidden
Every calculator shows the actual formula it uses — not a black box. Check our maths, not just our motives.
Free, No Paywall
No premium tier gatekeeping the calculators you actually need. Whatever we build to sustain this stays separate from the tools themselves.