科学计算器

About This Scientific Calculator

This free online scientific calculator supports all standard arithmetic operations plus advanced functions including trigonometry (sin, cos, tan and their inverses), logarithms (log base-10 and natural log), square root, exponentiation, factorial, and absolute value.

Toggle between Degree and Radian mode for trigonometric calculations. Use your keyboard to type numbers and operators directly. Click any history entry to restore that calculation.

Keyboard shortcuts: Numbers 0-9, operators +, -, *, /, Enter (=), Backspace (delete), Escape (clear).