Scientific Calculator Online — Free with History
Full-featured scientific calculator with trigonometry, logarithms, roots and more. Works like a real calculator.
About This Calculator
This scientific calculator supports standard arithmetic (+, −, ×, ÷, ^), as well as scientific functions including sine, cosine, tangent, natural log (ln), log base 10, square root, and squaring. Results are calculated using JavaScript's native Math library for maximum precision.
Tips
- Trigonometric functions (sin, cos, tan) use degrees by default.
- Use the ^ button for exponents (e.g., 2^10 = 1024).
- Press AC to clear all and CE to clear only the current entry.
Frequently Asked Questions
Yes. Click sin, cos or tan — values are calculated in degrees by default. This suits most common use cases including geometry and physics calculations.
Yes. Your recent calculations appear in the History box below the buttons, so you can reference previous results within the same session.
Yes. Use number keys, +, -, *, / for input. Press Enter to calculate, Backspace to delete, and Escape to clear all.