Trigonometric functions, logarithms, powers, roots, and memory. A full scientific calculator in your browser.
Click the result to copy. Press 2nd for inverse trig functions.
Trig functions work in degrees by default here. Remember that sin(90°) = 1, cos(0°) = 1. If you're working in radians, π/2 ≈ 1.5708.
Press the π button to insert 3.14159… and e for Euler's number 2.71828… These are precise constants, not approximations.
Use xʸ to raise x to any power. For square root press √x. For cube root, raise to the power of 1/3 using xʸ.
log is base-10 (common log). ln is the natural logarithm (base e). log(1000) = 3 because 10³ = 1000.
Press 2nd to access arcsin, arccos, arctan, which give you the angle from a ratio. arcsin(1) = 90°.
M+ stores a value, MR recalls it, M- subtracts from memory, MC clears it. Useful for multi-step calculations.
A full-featured scientific calculator for trigonometry, logarithms, powers, roots, and memory operations — all running in your browser with no install required.
sin(30°)
Result: 0.5
log(1000)
Result: 3
√144
Result: 12
2^10
Result: 1,024
cos(0°)
Result: 1
Converting degrees to radians
sin(90°) = sin(π/2) = 1
Using log and ln
log(1000) = 3 | ln(1) = 0
The first pocket scientific calculator was the Hewlett-Packard HP-35, released in 1972 at a price of $395 (about $2,700 today). It was the first calculator to perform trig and log functions and was rejected by HP's marketing team, who believed it would never sell — they were very wrong.
Use the angle mode required by the problem. Degrees divide a circle into 360 parts, while radians measure angles using the circle’s radius and are common in calculus and programming. Confirm the mode before evaluating sine, cosine, or tangent because the same number produces different results in each mode.
The log key normally calculates a base-10 logarithm, while ln calculates the natural logarithm with base e. Both answer which exponent produces the entered value in their respective base. Logarithms of zero or negative real numbers are not defined in an ordinary real-number calculator.
Browser calculations represent most decimal values in binary floating-point form, so some results contain tiny approximation differences. The display rounds those values for readability. Use suitable significant figures and specialist decimal or symbolic software when financial, scientific, or regulatory work requires controlled precision.
Treat the displayed expression as the source of truth and use parentheses when the intended order could be ambiguous. Powers and functions are normally evaluated before multiplication and division, followed by addition and subtraction. Check a complex expression in smaller steps when one misplaced bracket could materially change the answer.