Free Online Scientific Calculator
A powerful, free, and easy-to-use online calculator for students, teachers, engineers, and science professionals.
0
📋 History (click to reuse)
User Guide
How to Use
- Basic calculations: 0-9, + − × ÷
- Trigonometric functions: sin, cos, tan
- Switch Deg / Rad mode freely
- Supports square, cube, power, root
- Built-in constants: π, e
- Memory functions: M+, M−, MR
- Click history to reuse expressions
Keyboard Shortcuts
0-9 Numbers
+ - * / Calculate
. Decimal
= / Enter Get result
Backspace Delete last
Esc Clear all
( ) Parentheses
% Percent
s Sin
c Cos
t Tan
p PI (π)
e Constant e
l Ln
a Answer
FAQ
Q: Is this calculator free?
A: Yes, 100% free forever.
Q: Does it work on mobile?
A: Yes, fully responsive on all devices.
Q: Supports trigonometry?
A: Yes, full scientific functions.
Q: Is calculation history saved?
A: History is temporary only. NOT uploaded to server.
It will be lost after refresh or close.
It will be lost after refresh or close.
Q: Any usage limits?
A: No limits. Unlimited use.
About Our Free Online Calculator
This free online scientific calculator supports advanced math functions including trigonometry, logarithms, exponents, fractions, and more.
It is designed for high school, college students, engineers, and anyone who needs a reliable calculator for daily use.
Features:
- Basic arithmetic operations
- Trigonometric functions (sin, cos, tan)
- Logarithms and natural logs
- Exponents and roots
- Constants like π and e
- Memory functions (M+, M-, MR)
- History and answer recall