About Four-Function Calculator
Ideal for elementary arithmetic, percentages, shopping discounts, and everyday calculations with strict floating-point accuracy.
Four-Function Calculator
Clean, high-precision basic calculator for everyday arithmetic.
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Frequently Asked Questions
How do I calculate a percentage discount?
Multiply the price by the discount as a decimal. For 20% off $50, type 50*0.8 to get $40. The % key inserts the percent symbol for you.
Why does 0.1 + 0.2 not equal exactly 0.3 on most calculators?
Most calculators use binary floating-point math, which can't represent 0.1 exactly. This calculator uses high-precision arithmetic to keep everyday calculations accurate.
Is this basic calculator free?
Yes — every tool on Math Solver Free is free with no sign-up, and all calculations run in your browser.