Financial calculators that are fast & precise.
See your numbers clearly — mortgage, loans, investing, retirement and taxes, computed in your browser with decimal precision. Free, and no sign-up.
- Principal & interest
- 76%
- Property tax
- 18%
- Insurance
- 6%
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Mortgage
Estimate your monthly mortgage payment, affordability, refinancing and payoff — with taxes, insurance and PMI included.
Loans
Work out payments, total interest and payoff timelines for personal, auto, student and business loans.
Credit Cards
Plan your payoff, compare balance transfers, and see the true cost of minimum payments and rewards.
Investment
Project growth, returns, dividends and compounding to see what your investments could become.
Retirement
Plan for retirement — 401(k), IRA, Social Security, RMDs and how long your savings will last.
Taxes
Estimate federal income tax, refunds, capital gains, self-employment and estate tax for the 2025 tax year.
Salary
Convert pay, estimate take-home, and model overtime, raises and hourly-to-salary figures.
Budget
Build a budget, track your cost of living, hit savings goals and get a grip on everyday spending.
Business
Run the numbers on margins, break-even, ROI, cash flow and financing for your business.
Real Estate
Analyze rental yield, cap rate, cash-on-cash return and the real returns on a property investment.
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Built to be trusted
Every number is computed the careful way — precise, sourced, and private.
Decimal precision
Every result uses exact decimal math — no floating-point rounding drift, even on large sums.
Sourced & dated
Tax and benefit figures are verified against the IRS, SSA and official sources, with the year shown on every page.
Private & offline
Calculations run in your browser. Nothing you enter is stored, and it keeps working with no connection.
Free, no sign-up
Every calculator is free to use — no account, no paywall, no limits.