Scientific Calculator
A free scientific calculator — arithmetic with correct order of operations, parentheses, powers and roots, trigonometry, logs, and the constants π and e. Type an expression or tap the keys; toggle degrees/radians. Runs in your browser.
FAQ
What can this scientific calculator do?
Arithmetic with order of operations and parentheses, powers (^) and roots (√), percentages, trig (sin, cos, tan), logarithms (log and ln), factorials, and π and e. Type an expression or tap the buttons.
Degrees or radians?
Both — toggle the switch. In degrees, sin(30) = 0.5; in radians, sin(π/6) = 0.5.
How does it handle order of operations?
Standard precedence (PEMDAS): parentheses, powers, ×/÷, then +/−. So 2 + 3 × 4 = 14 and (2 + 3) × 4 = 20.
Is it safe and private?
Yes — it uses its own parser (not browser eval), entirely on your device. Nothing is sent or stored.
More tools: percentage calculator, fraction ⇄ decimal, and the full tools list.