The payment is one number. Total interest is the one that matters.
Select a tool below to start running numbers.
Run any mortgage scenario and see every number — not just the monthly figure, but what you pay over the full term. Assumptions printed below every result.
Pick the calculation you need
Monthly Payment
Total Interest Paid
Amortization Schedule
Enter loan amount, rate, and term. See principal-and-interest breakdown with every assumption listed below the result.
The figure most calculators bury. See the full cost of borrowing across every year of the loan, not just the opening line.
Year-by-year table showing how principal and interest shift over time. Export or share the full schedule.
Every result on this platform lists the assumptions baked into the calculation — credit score tier, PMI inclusion, tax and insurance estimates. If an input changes your output materially, it's labeled.
Your rate depends on what we don't know
We also flag what to verify with a lender before committing — because a calculator that tells you exactly where the uncertainty lives is more useful than one that pretends otherwise.
Run the same loan three different ways
Change the term from 30 to 15 years, adjust the down payment, or shift the rate by half a point. The comparison view shows exactly what moves and what doesn't.