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Free Online Calculator
Free online calculator with basic and scientific modes. Perform arithmetic operations, trigonometric functions, logarithms, exponentials, square roots, and more. Perfect for students, engineers, and professionals.
Free for personal use. Commercial use requires a license.
View PricingFeatures
- Basic Mode - Standard arithmetic operations including addition, subtraction, multiplication, division, percentages, and square roots
- Scientific Mode - Advanced mathematical functions including trigonometry (sin, cos, tan), logarithms (log, ln), exponentials, factorials, powers, and parentheses
- Keyboard Support - Full keyboard input for faster calculations
- Mobile Friendly - Responsive design optimized for all devices
How to Use
- Choose Mode - Select basic mode for simple arithmetic or scientific mode for advanced functions
- Enter Numbers - Click buttons or use keyboard to input your expression
- Calculate - Press equals button or Enter key to get results
- Continue - Use the result for further calculations or clear to start fresh
Questions
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