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A fast online calculator with a keypad, keyboard input, brackets, percentages, square roots, and a history of your calculations. Exact decimals: 0.1 + 0.2 = 0.3.
Also covers: Online calculator Β· Simple calculator
Type or paste an expression, then press Enter. Results use 34-digit decimal arithmetic, so 0.1 + 0.2 = 0.3 exactly.
History
Calculations appear here. Click one to edit it again; ans uses the last result.
Use the keypad or your keyboard. Brackets, %, β and xΒ² work, and the result previews as you type.
The answer is added to the history β click any entry to edit it again, or use ans to continue from the last result.
Most calculators and programming languages use binary floating point, where 0.1 + 0.2 = 0.30000000000000004. This calculator uses 34-digit decimal arithmetic, so everyday decimals behave the way you'd expect.
50% means 0.5, so 200 Γ 15% = 30. To add a percentage, write 200 + 200 Γ 15% or use the percentage calculator.
Yes: type the calculation, press Enter for =, Escape to clear, and use * or / as well as Γ and Γ·.
Calc
Free online scientific calculator: sin, cos, tan and inverses in degrees or radians, logs, powers, roots, factorials, Ο and e, with history and 34-digit precision.
Percent
Seven percentage calculators in one: percent of a number, what percent, percentage change, increase or decrease by a percent, percentage difference, and reverse percentages.
Ratio
Simplify ratios (including decimals), solve proportions like 3 : 4 = x : 20, and divide an amount in a given ratio, with the working shown.
Fractions
Add, subtract, multiply and divide fractions and mixed numbers exactly. Get the simplest form, mixed number, decimal (with repeating digits), and percent.
Powers
Raise any number to any power: exact results for whole-number powers (even huge ones like 2ΒΉβ°β°β°), plus negative, fractional and decimal exponents.
Roots
Square roots, cube roots and any nth root to 30 digits, with simplified radical form (β72 = 6β2) and perfect-power detection.