Free Scientific Calculator Online — Trigonometry, Logarithms & More
A full scientific calculator with sin, cos, tan, sqrt, log, ln, exponents, and constants (π, e). Clean button interface with calculation history.
Key Features
- Trigonometric functions: sin, cos, tan
- Logarithms: log (base 10) and ln (natural)
- Square root, exponent (^), and parentheses
- Constants: π and e
- Calculation history panel
- Works on mobile and desktop
SimplyUtils vs Competitors
| Feature | SimplyUtils | Desmos | WolframAlpha | Google Calculator |
|---|
| Free to use | ✓ | ✓ | Partial | ✓ |
| No registration | ✓ | ✓ | ✓ | ✓ |
| Trig functions | ✓ | ✓ | ✓ | ✓ |
| Offline capable | ✓ | ✗ | ✗ | ✗ |
| Clean minimal UI | ✓ | ✓ | ✗ | ✓ |
Frequently Asked Questions
Are trigonometric functions in degrees or radians?
The calculator uses radians for trig functions, which is the standard in JavaScript's Math library. To convert degrees to radians, multiply by π/180.
What is the log function?
The 'log' button calculates log base 10 (common logarithm). The 'ln' button calculates the natural logarithm (base e).