Free Financial Calculators
Fast, accurate, and easy to use. Make smarter financial decisions with professional-grade tools.
Popular Calculators
Compound Interest Calculator
See how your money grows over time with compound interest and regular contributions.
Investment Calculator
Project the future value of investments with inflation-adjusted returns.
Loan Calculator
Calculate monthly payments and total interest for any fixed-rate loan.
Debt Payoff Calculator
Compare avalanche and snowball methods to find the fastest debt payoff strategy.
Mortgage Calculator
Estimate monthly mortgage payments including taxes, insurance, and PMI.
Savings Calculator
Calculate how your savings grow with regular deposits and compound interest.
Profit Margin Calculator
Calculate gross, operating, and net profit margins from your revenue data.
Salary Calculator
Convert salary between hourly, weekly, monthly, and annual pay periods.
How MoneyTools Works
Choose a Calculator
Pick from 20 financial calculators across investment, loans, mortgage, savings, business, and salary categories.
Enter Your Numbers
Input your financial details. Results update in real time as you type — no submit button needed.
Get Instant Results
See detailed breakdowns, charts, and amortization schedules. Share or export your results.
Why Trust MoneyTools
Verified Accuracy
Every calculator engine is unit-tested with independently verified expected values.
Transparent Methodology
All formulas are documented. See exactly how your results are calculated.
Privacy First
Calculations happen in your browser. No financial data is stored or transmitted.
Always Free
Professional-grade financial calculators with no hidden costs or paywalls.