Make smarter financial decisions with free calculators
See the true cost of any loan in seconds — every payment, every dollar of interest, clearly laid out.
Monthly
$2,029
Total
$730K
Interest
$410K
Loan balance — 30 years
With $200/mo extra
Save $52K in interest
Pay off
4y earlier
What do you want to figure out?
Six calculators, instant results, no account needed.
Mortgage Calculator
Find out your true monthly cost including taxes, insurance, and PMI — then see how much interest extra payments could save you.
Car Loan Calculator
See your true monthly payment, total interest, and whether the car fits your budget — including sales tax and trade-in value.
Loan Amortization Calculator
See every payment broken down into principal and interest. Know exactly when your loan is paid off and what it costs in total.
Debt Payoff Planner
Enter your debts, pick avalanche or snowball, add an extra payment — and see the exact month each debt disappears.
Compound Interest Calculator
See how $10,000 and $200/month grows to six figures. Watch interest outpace contributions as compounding kicks in.
Biweekly Mortgage Calculator
See how much interest and time you save by paying every two weeks instead of once a month. The math is surprisingly powerful.
Why people use FinWiser
No spreadsheets required
Instant, accurate results — no Excel formulas to debug.
Free, always
Every calculator is free to use, no credit card needed.
Save your work
Create a free account to save and revisit your calculations.
Compare mortgages side by side
15-year vs 30-year? Two different rates? See which option costs less over the life of your loan — including total interest and monthly payment differences.