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Biweekly Mortgage Calculator
See how much time and interest you save by paying half your mortgage payment every 2 weeks (26 half-payments/year = 13 monthly equivalents).
FINANCECalculate how much interest and time you save by paying half your mortgage payment every 2 weeks. 26 biweekly halves per year = 13 monthly payments — one extra payment annually.
True biweekly: each half is credited immediately, saving interest on the first half for 2 weeks. Many lender "biweekly" programs just hold halves and forward as one monthly + one extra annually — same end result but no within-month savings. You can get the same effect for free by setting up "1/12 extra to principal" on your monthly autopay.
Disclaimer: Confirm with your servicer that extra payments go to principal (not the next scheduled payment) and that there is no prepayment penalty.
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Frequently Asked Questions
What is the Biweekly Mortgage Calculator for?
Calculate how much interest and time you save by paying half your mortgage payment every 2 weeks. 26 biweekly halves per year = 13 monthly payments — one extra payment annually.
How do I use the Biweekly Mortgage Calculator?
True biweekly: each half is credited immediately, saving interest on the first half for 2 weeks. Many lender "biweekly" programs just hold halves and forward as one monthly + one extra annually — same end result but no within-month savings. You can get the same effect for free by setting up "1/12 extra to principal" on your monthly autopay.
How accurate are my biweekly mortgage results?
Confirm with your servicer that extra payments go to principal (not the next scheduled payment) and that there is no prepayment penalty.
Is the Biweekly Mortgage Calculator free to use?
Yes - every calculator on WhichCalc is completely free with no signup, no usage limits, and no tracking on the calculation itself. Results display instantly in your browser and your inputs are never sent to a server. Bookmark the page if you use this calculator regularly.
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