Free online calculators
Fast, free, no-sign-up calculators for the money questions people actually ask — mortgage payments, paychecks, tips, loans — plus the everyday math in between. Built by a licensed financial professional, priced at exactly nothing.
Monthly payment with taxes, insurance, PMI, and HOA — plus total interest over the life of the loan.
Open calculator →Estimate your take-home pay after 2026 federal tax, Social Security, Medicare, and deductions.
Open calculator →Payments and total interest for auto or personal loans — and how much an extra payment saves.
Open calculator →Watch savings grow with regular contributions. The eighth wonder of the world, on tape.
Open calculator →Tip, total, and split-the-bill in two taps. Round up like a good samaritan.
Open calculator →Percent of a number, percent change, and “X is what % of Y” — all three in one place.
Open calculator →Length, weight, temperature, volume, area, and speed. Metric to imperial and back.
Open calculator →The 28/36 rule, what lenders actually check, and why the bank's maximum shouldn't be yours.
Open calculator →Gross vs. net, every deduction line explained, and the three things worth checking each payday.
Open calculator →Yes — here's the math, when it's worth it, and the one thing to confirm with your lender first.
Open calculator →Most calculator sites bury the answer under pop-ups and ten paragraphs of filler. We keep it simple: type your numbers, read the tape. Every calculator updates as you type, works on your phone, and explains its assumptions in plain English. More calculators are on the way — if there's one you want, tell us.