Evaluate scientific expressions with a keyboard, degrees or radians, and a history of results.
Everyday toolsMath calculators
2.5
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Parentheses come first, then percent and factorial, then powers, then multiplication and division, then addition and subtraction. Powers associate to the right, so 2^3^2 is 2^(3^2), which is 512. A leading minus sits outside a power, so -2^2 is −4, while (-2)^2 is 4.
You can write 2π or 2sin(30). The page treats the missing times sign as multiplication. Named functions still need parentheses. sin 30 without them is rejected so the expression cannot be misread.
Switch modes and the same expression is evaluated again. Tangent of 90° is refused because cosine of that angle is zero. Inverse sine and cosine accept inputs from −1 to 1 and answer in the mode you picked.
Each successful evaluation is added to the history list. Choosing a row puts that expression back in the field. Clearing the history does not change the expression you are editing.
Related on UtilGenie: Math calculators, Slope Calculator, Fraction Calculator, Percentage Calculator, Ratio Calculator.
Type or tap an expression, pick degrees or radians, and read the result.
Enter an expression with the keyboard or the keys. Functions need parentheses, as in sin(30).
Choose degrees or radians before you trust a trig result.
Press Enter or the equals key. An undefined step shows an error instead of a fake number.
Open a past line from the history, or copy the result and the page link.
Add, subtract, multiply, divide, and powers, plus parentheses, square root, factorial, percent, absolute value, and e to a power. Trigonometry includes sin, cos, tan and their inverses. ln is natural log and log is base 10. Constants are π and e.
Yes. Type an expression such as sin(30)+2. Enter evaluates it. Escape clears it. Backspace deletes. The on-screen keys insert the same symbols, including at the cursor.
Degrees split a circle into 360 parts. Radians use the circle's radius, so π radians is 180°. Sin(90) is 1 in degrees and a different number in radians. The toggle applies to sin, cos, tan, and the inverse functions. The current mode is part of the share link.
A percent sign divides the value before it by 100, so 50% is 0.5. It does not silently mean “percent of the previous number.” Factorial is for whole numbers from 0 up, and 0! is 1. A negative or a decimal factorial is rejected.
Division by zero, the square root of a negative, a logarithm of a number that is not positive, tangent of 90°, and zero to the power of zero are all undefined here. A missing parenthesis is named instead of guessing.
History stays on this page until you clear it or leave. It is not an account. The share link stores the current expression and the degree or radian mode, not the whole history.
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