Mortgage Calculators UK - Free Tools for Homebuyers
Our comprehensive suite of mortgage calculators helps UK homebuyers, property investors, and existing homeowners make informed financial decisions. From calculating monthly payments to planning overpayments, these free tools provide instant, accurate results.
Most Popular Calculators
Mortgage Repayment Calculator
Calculate your monthly mortgage payments and see the total cost over your mortgage term.
110,000+ monthly searches
Stamp Duty Calculator
Work out exactly how much SDLT you'll pay when buying property in England or Northern Ireland.
368,000+ monthly searches
Mortgage Overpayment Calculator
See how much you could save by overpaying your mortgage and become mortgage-free years earlier.
74,000+ monthly searches
How Much Can I Borrow Calculator
Estimate your mortgage borrowing potential based on your income and circumstances.
33,100+ monthly searches
Buy to Let Mortgage Calculator
Calculate BTL mortgage payments, rental yield, and check if your investment meets lender requirements.
27,100+ monthly searches
More Calculators
Which Mortgage Calculator Do You Need?
If you're just starting your property search...
Start with the How Much Can I Borrow Calculator to understand your budget. Then use the Stamp Duty Calculator to factor in purchase costs, and the main Mortgage Calculator to see monthly payments.
If you already have a mortgage...
The Overpayment Calculator shows how extra payments could save you thousands and cut years off your term. Consider the Remortgage Calculator if your fixed rate is ending soon.
If you're a property investor...
The Buy to Let Calculator analyses rental yield, interest coverage ratios, and helps you understand if a property investment makes financial sense.