About Finance Calculators

Finance Calculators is a free, open-access collection of 7 utilities built for speed and privacy. Every tool runs entirely in your browser — no data is ever sent to our servers, logged, or stored.

Our Philosophy

• Local-first: All computation happens on your device using browser APIs.
• No login required: Open a tool, use it, done.
• No tracking of inputs: Your data stays on your machine.
• Fast: Static pages with no server round-trips.

Available Tools

• Compound Interest Calculator — Calculate compound interest growth with principal, rate, and time.
• Loan Payment Calculator — Calculate monthly loan payments based on principal, rate, and term.
• Savings Goal Calculator — Find monthly savings needed to reach a financial goal.
• ROI Calculator — Calculate return on investment percentage from initial and final values.
• Salary Converter — Convert annual salary to hourly, weekly, biweekly, and monthly.
• Credit Card Payoff — Calculate how long to pay off credit card debt and total interest paid.
• Break-Even Calculator — Calculate the break-even point in units and revenue for a business.

Quality Policy

Each tool is tested against common edge cases. We prioritize correctness over feature bloat. If you find a bug, please contact us so we can fix it promptly.