Free Financial Calculators

Whether you're taking out your first personal loan, comparing mortgage offers on a $400,000 home, or trying to figure out whether your salary is competitive — our financial calculators give you the numbers you need without the jargon. Every tool is free, works instantly in your browser, and requires no sign-up.

The most common use case? Running the numbers before you commit. Use the loan payment calculator to see exact monthly payments before you walk into the bank. Run the mortgage calculator to understand how a 0.5% rate difference affects your total cost over 30 years — it's often $30,000–$50,000. Use the monthly budget calculator to make sure you can actually afford those payments alongside your other expenses.

If you're focused on building wealth, the compound interest calculator shows why starting to invest 10 years earlier can double your final balance. The ROI calculator puts any investment in perspective — from real estate to index funds to starting a business. And if debt is weighing you down, the debt payoff calculator maps out the fastest route to being debt-free using either the avalanche or snowball strategy.

This category covers every major financial decision an individual or small business owner faces: credit scoring, retirement planning, break-even analysis, leasing vs. buying, and more. All calculators work with US and UK financial conventions — 30-year mortgages, credit score considerations, dollar-based scenarios.