Clear numbers, sensibly explained
Twenty free calculators for interest, loans, investing, and everyday budgeting — plus plain-language articles and financial news. No sign-up, no spreadsheet, just clear totals.
Browse all toolsTools
Twenty calculators covering interest, loans, investing, retirement, and budgeting — each with its own formula, worked examples, and FAQ.
02Articles
Plain-language explainers on how the math behind your money actually works, without the jargon.
03News
Rates, policy changes, and market moves that affect the numbers you’re calculating — coming soon.
Start with a calculator
Mortgage Calculator
Estimate your monthly mortgage payment, and see the total interest you’ll pay over the life of the loan.
Interest & GrowthCompound Interest Calculator
See how a lump sum — plus optional monthly deposits — grows once interest starts earning interest on itself.
Investing & RetirementRetirement Calculator
Project your retirement balance from current savings and contributions, then estimate sustainable monthly income.
Loans & DebtDebt Payoff Calculator
See how much faster you’ll be debt-free — and how much interest you’ll save — by adding extra to your payment.
Investing & RetirementInvestment Calculator
Project how a portfolio could grow with regular contributions and an assumed average annual return.
Savings & BudgetingTake-Home Pay Calculator
Estimate your net paycheck after pre-tax deductions, an estimated tax rate, and post-tax deductions.