Solve everyday and advanced calculations with trigonometry, logarithms, powers, roots and constants. Use the buttons or type directly from your keyboard.
Keyboard: numbers and operators to enter · Enter to solve · Esc to clear
This free online scientific calculator combines familiar arithmetic controls with the advanced functions used in algebra, geometry, engineering and science classes. Calculations run locally in your browser, with no account or download required.
Calculate sine, cosine, tangent and their inverse functions. Switch between degree and radian mode before entering an angle.
Work with exponents, square and cube roots, natural logarithms, base-10 logarithms and exponential functions.
Use π, Euler's number, factorials, percentages and memory controls, then revisit previous calculations with one click.
Enter an expression with the on-screen keypad or your computer keyboard. Choose DEG for angles in degrees or RAD for radians, then press = or Enter to calculate. Parentheses set the order of operations, while Ans reuses your previous result.
Select DEG, enter sin(30), and calculate to get 0.5. For radian input, select RAD and enter sin(π/2).
Enter 5^3 to calculate 5 cubed, or use the square-root key and enter sqrt(144) to get 12.
The calculator evaluates parentheses first, followed by factorials and percentages, exponents, multiplication or division, then addition or subtraction.
Helpful answers for getting accurate results from the calculator.
Use DEG when angles are measured in degrees, such as 30° or 90°. Use RAD when an angle is measured in radians, such as π/2. The selected mode applies to trigonometric functions and their inverses.
The percent key divides the preceding value by 100. For example, 25% returns 0.25, and 200 × 10% returns 20.
Yes. Type numbers, parentheses and the +, −, *, /, ^ or % operators. Press Enter to calculate, Backspace to remove the last character, and Escape to clear.
Your 12 most recent calculations are saved locally in this browser, so they remain after a refresh or return visit. Nothing is uploaded, and you can remove them at any time with the Clear button.