Finance Calculators

Start with what you're trying to decide, not the tool name. If you're comparing whether to buy a home, the mortgage calculator gives you the monthly payment and total interest, while the stamp duty calculator (UK) adds the one-off purchase tax on top so you can see the full cost of buying, not just the monthly repayment.

If the question is about your paycheck, the take-home pay calculator converts a gross salary (US or UK) into what actually lands in your bank account after tax and deductions. Paid hourly instead? Use the hourly to salary calculator to convert to an annual figure first, and the overtime calculator if extra hours are involved.

Carrying a loan or thinking about one? The loan calculator breaks a car or personal loan into its interest and principal components so you know exactly what you're paying for the credit. Buying a car specifically? The auto loan calculator adds sales tax, fees, your trade-in and any negative equity. Already in debt? The credit card payoff calculator shows your debt-free date on one card, and the debt payoff calculator compares the snowball and avalanche methods across all of them.

For growing money rather than spending it, the compound interest calculator is the simplest starting point, and the savings goal calculator turns a target into a monthly amount. For long-term growth, move on to a retirement calculator, 401(k) calculator or Roth IRA calculator once you have a specific account type and time horizon in mind. Saving for a degree instead of retirement? The college cost calculator projects the 4-year total and flags any savings gap early.

Finally, the tax tools are region-specific: VAT and stamp duty are UK-only, sales tax is US-only by state, and capital gains tax covers both systems — check which region applies to you before reading the result.

Selling something? The profit margin calculator converts between margin and markup, sets a price from a target margin, and works out your break-even point.