What the tool does, how to run it, and what to expect from the result.
Work out monthly mortgage payments in pounds for a UK repayment or interest-only mortgage, with your loan to value (LTV) and total interest. The math updates instantly and runs on your device, so it is fast, private, and available offline.
A quick way to understand who this helps, what it solves, and where it connects next.
Shoppers, students, freelancers, and anyone who needs a quick, private calculation.
Fast everyday math without a spreadsheet, app install, or sign-up.
Short answers for the questions people usually have before trying a utility like this.
Yes. It is completely free, with no sign-up, no watermark, and no usage limits.
Yes. Results are shown in pounds sterling (£) for UK mortgages; the maths is the same in any currency.
At 4.5% over 25 years a £270,000 repayment mortgage costs £1,500.75 a month and £180,224 in interest. Interest-only would be £1,012.50 a month, but the full £270,000 is still owed at the end.
Loan to value is the mortgage as a share of the property price. Lenders price in bands, commonly 60%, 75%, 85%, 90% and 95%, and a bigger deposit that drops you into a lower band usually gets a cheaper rate.
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Enter your numbers and the result updates live in your browser. Nothing is uploaded and no server is used.
Calculations run locally in your browser. Amounts are shown without a currency symbol so they work anywhere.