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Calculators for loans, interest, VAT, and sales tax.
Each tool is one page. Money calculators use the rate you type. VAT, GST, and US sales tax use one standard rate per page, checked against a published source.
General
CalculatorAdd, subtract, multiply, divide, and take a percent.Scientific calculatorSine, cosine, logarithms, powers, roots, and factorials.
Money
Loan Payment CalculatorA loan payment calculator turns an amount, an annual interest rate, and a term into a monthly payment. It does not calculate tax, fees, or insurance.Extra Loan Payment CalculatorAn extra loan payment calculator shows what happens when you add a fixed amount to the principal every month. You type the rate. The result is a payoff time and the interest saved, not a tax estimate.Compound Interest CalculatorA compound interest calculator projects an end balance from a starting amount, the annual rate you type, and how often that rate compounds. An optional monthly deposit is included. Nothing here is a tax calculation.Savings Goal CalculatorA savings goal calculator answers two questions on one page: how much to save each month, or how long a monthly deposit takes. You type the annual rate. The result is before tax.Salary to Hourly CalculatorThis converts annual pay to an hourly rate before tax. It also shows weekly and monthly pay. It is not a paycheck calculator and does not withhold income tax.