Tools
Free calculators, no sign‑up and no personal data: decide with numbers before you sign, understand what you already owe and plan what you want to save. The same calculation engine the app uses.
Loans and debt
Auto loan
Work out the monthly payment, total interest and true cost of a car with down payment, trade‑in, your state’s vehicle sales tax and fees. Compare terms and see the amortization schedule.
Mortgage
Full monthly payment (principal, interest, property tax, insurance, HOA and PMI), total interest over 15 or 30 years and how much house you can afford with the 28/36 rule.
Personal loan
Monthly payment, total interest and the real APR of a personal loan including the origination fee. See whether using it to pay off a credit card actually saves money.
Any loan
Payment, total interest and amortization schedule for any fixed‑payment loan: student, business, family. See how much you save and how much sooner you finish with an extra monthly payment.
Credit
Savings and investing
Rule of 72
How many years it takes your money (or your debt) to double at a given rate, using the rule of 72 and the exact math, and what rate you need to double it in the years you choose.
Compound interest
How much you will have with an initial deposit and monthly contributions at a given rate, how much is interest versus contributions, and how much to save per month to hit your goal.
These calculators are educational estimates based on the numbers you enter; they are not a credit offer nor financial, legal or tax advice. Reference rates are reviewed yearly.