Free UK Mortgage Calculators
Calculate your monthly repayments, see how overpaying cuts your term, and compare fixed vs variable deals — all in one place.
Enter your mortgage details
£
£50k£1m
%
0.5%10%
years
5 yrs40 yrs
Your results
Enter your details and hit Calculate to see your monthly repayment.
Your mortgage + overpayment
£
£50k£800k
%
0.5%10%
years
1 yr40 yrs
£
£50£2,000
Check your lender's overpayment limit — typically 10% of balance per year.
Overpayment impact
Enter your details above to see how much time and interest you could save.
Compare two rates
£
£50k£1m
years
5 yrs40 yrs
%
0.5%10%
%
0.5%10%
years
1 yr15 yrs
Typically 2 or 5 years for a fixed deal.
Deal comparison
Enter rates above to compare the true cost of fixed vs variable deals side by side.
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