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About this calculator
Beyond basic arithmetic, this calculator adds trigonometric functions (sin, cos, tan), logarithms (log base 10 and natural log), powers, square roots, parentheses for grouping, and the constants π and e.
Use the DEG/RAD toggle to switch how trigonometric functions interpret angles — degrees (0–360°) or radians (0–2π) — before calculating sin, cos or tan.
Parentheses let you control the order of operations directly, e.g. 2×(3+4) or sin(30+15) — type the full expression and press = to evaluate.