Free Online Calculators
Finance, math, health, construction, and everyday tools in one searchable catalog.
Your calculators
Mortgage Calculator — Payment, Affordability & Extra Savings
Estimate monthly mortgage costs, cash to close, amortization, and extra-payment savings, or plan an affordable home price from income, debts, and target DTI.
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Car Loan Calculator — Payment, Budget, Payoff & Offers
Calculate a car payment from the complete deal, reverse a monthly budget, test extra-payment payoff, compare two offers, or estimate a lease.
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Loan Calculator - Payments, Payoff & Amortization
Calculate a fixed loan payment, model extra-payment payoff, estimate an affordable loan amount, compare offers, and inspect annual or monthly amortization.
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VAT Calculator — Add, Remove & Find VAT
Add VAT to a net price, remove VAT from a gross total, or find the effective VAT rate with currencies, rounding, formulas, and a clear tax breakdown.
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Discount Calculator — Percent Off, Coupons & Tax
Calculate checkout totals with stacked discounts, fixed coupons, quantity, tax, and shipping; find percent off, reverse an original price, or compare two deals.
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Margin Calculator — Profit, Markup & Target Price
Analyze gross margin, markup, net profit, fees, discounts, tax, overhead, break-even quantity, target prices, and pricing scenarios.
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Percentage Calculator - Change, Points & More
Calculate percentages, find a whole, compare percentage change and difference, measure percentage points, reverse a change, and compound successive rates.
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Currency Converter - Rates, Fees & History
Convert 27 currencies with dated institutional rates, calculate the amount received after markup and fees, compare providers, and inspect historical trends.
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Inflation Calculator — See How Inflation Affects Your Money
Compare historical prices, purchasing power, salary changes, and future costs with U.S. CPI-U data from 1913 and clearly labeled projections through 2030.
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Compound Interest Calculator — Savings Growth & Goals
Project compound interest with monthly contributions, compare APR and APY, adjust for inflation, or calculate the monthly savings needed for a goal.
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Retirement Calculator — Savings & Monthly Income
Estimate savings at retirement from your age, current balance, and monthly contribution. Then refine income, spending, returns, and inflation.
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Salary Calculator — Hourly to Annual Pay
Convert hourly, daily, weekly, monthly, or annual gross pay instantly. Optionally adjust schedule, unpaid time, overtime, bonus, and raise.
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