Why Use This Refinance Mortgage Calculator
A refinance mortgage calculator helps you compare your current loan with a new one. Whether you’re looking for a refinance home loan, a refi mortgage, or just want a quick refinance estimate, this tool gives you clarity. Use this mortgage loan refinance calculator to see if refinancing your house loan makes sense.
- 💰 Compare Monthly Payments — see your current vs new payment instantly.
- 📉 Calculate Interest Savings — know exactly how much you save over the life of the loan.
- ⏱️ Find Your Break-Even Point — see when your monthly savings cover your closing costs.
- 📊 Visualize the Comparison — view your refinance mortgage payment side‑by‑side with your current loan.
- 📜 Track Your History — save, review, and export past calculations to CSV or Excel.
- 🔒 100% Private — all calculations run locally; your data never leaves your browser.
Refinance Formula Used by This Tool
This refinance calculator uses the standard mortgage payment formula:
M = P × r × (1 + r)^n ÷ ((1 + r)^n − 1)
Where:
- P = Loan Balance
- r = Monthly Interest Rate
- n = Number of Monthly Payments
Your monthly savings is the difference between your current monthly payment and your new payment.
Your break-even point is: Closing Costs ÷ Monthly Savings — the number of months it takes for your savings to cover the cost of refinancing.
How to Use This Refinance House Loan Calculator
- Select your account currency from the picker in the site header.
- Enter your current loan balance (remaining balance on your current mortgage).
- Enter your current interest rate.
- Enter the remaining term on your current mortgage.
- Enter the new interest rate you’re being offered.
- Choose your new loan term.
- Enter the closing costs for the refinance.
- The tool updates instantly — see your monthly savings, total interest saved, and break‑even period.
Whether you need a refinance mortgage estimator or a full refi mortgage calculator, this tool gives you a complete picture.
Frequently Asked Questions
What is the Refinance Calculator?
It’s a refinance mortgage calculator that compares your current mortgage with a new loan. It calculates your new payment, total interest, and break‑even point — so you can decide if a refi mortgage makes sense.
How is the break‑even point calculated?
Divide your closing costs by your monthly savings. That gives you the number of months to recover your costs. This refinance calculator shows it in years and months.
When does refinancing make sense?
Refinancing makes sense when you can lower your rate by at least 0.5‑1% and plan to stay in your home long enough to break even. Use this refinance home loan calculator to test different scenarios.
What’s included in the refinance estimate?
Closing costs typically include appraisal, title search, origination fees, and other lender charges. Adjust the closing costs field based on your actual Loan Estimate.
Why use this refinance mortgage payment calculator?
It gives you a complete financial picture — monthly payment, total interest, interest saved, and break‑even — so you can compare your refinance house loan options side by side.
Is my data stored anywhere?
No. All calculations run locally in your browser. History and presets are saved in your browser’s localStorage — nothing is sent to a server.