Free financial calculators for loans, mortgages, investments, savings, retirement, taxes and personal finance — each with its formula and a worked example.
GodCalculator's financial calculators help you make confident decisions about loans, mortgages, savings, investments, taxes and everyday money matters. Every tool shows its formula and a worked example so you can verify the math yourself. Estimates may differ from a lender, bank or tax authority — use them to understand the numbers, then confirm with your provider.
Monthly payments, interest, amortization.
Car loan with sales tax and trade-in.
Fixed monthly payment for any loan.
Full month-by-month schedule.
Time to clear a balance.
Monthly debt vs. income.
Auto lease monthly payment.
Home loan with down payment.
Early payoff from an extra payment.
Max home price from income.
Down payment amount and loan.
Old vs. new mortgage breakeven.
Affordable rent by income rule.
Interest-only payment & balloon.
Growth with periodic contributions.
Lump sum plus monthly contributions.
Grow savings with regular deposits.
Projected balance at retirement age.
Balance with employer match.
Lump sum growth at a fixed rate.
Today's worth of a future sum.
Return on investment.
Present value of payment series.
Price of a fixed-coupon bond.
NPV and rough IRR.
US federal tax estimate.
Add or extract sales tax.
Add or extract value-added tax.
Hourly, monthly and annual conversion.
Sales commission plus bonus.
Selling price from cost.
Sale price after a percent off.
Future cost and purchasing power.
Monthly benefit estimate.
They are mathematically exact for the inputs you provide, but real-world loans, taxes and investments include fees, rules and rate changes that a simple calculator cannot capture. Treat results as estimates and confirm with your lender, bank or tax authority.
No. All calculations run in your browser. Nothing you type is sent to a server or saved unless you explicitly save a template to your own account.
Each tax or regulatory calculator records its data year and last-verified date on its page. Stale rules are flagged for review rather than silently presented as current.
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