Functions supported
This calculator supports basic arithmetic (+, −, ×, ÷), exponents (^), square roots, trigonometric functions (sin, cos, tan) in degrees or radians, logarithms (base-10 and natural log), factorials, and π.
Degrees vs radians
Toggle between DEG and RAD depending on what your problem requires — most everyday trigonometry (angles, geometry) uses degrees, while calculus and higher math typically use radians.
Frequently asked questions
Can I use keyboard input? Yes — click into the display area isn't needed, just type numbers and operators directly; the calculator listens for keyboard input on the page.
Why does sin(180) not show exactly 0? Due to floating-point precision, results very close to zero may show as a tiny decimal like 0.0000000001 instead of exactly 0 — this is normal for calculator software.