Scientific Calculator
Trigonometry | Logarithms | Exponents | Advanced Math 📐 | Free Online Scientific Calculator
What is a Scientific Calculator?
A scientific calculator is an essential tool for students, engineers, scientists, and professionals who need to perform advanced mathematical calculations beyond basic arithmetic. Unlike a basic calculator, a scientific calculator includes trigonometric functions (sin, cos, tan), logarithms (ln, log), exponents (power, square root), and constants (π, e).
This free online scientific calculator works like a Casio or Desmos scientific calculator — perfect for homework, exams, or quick calculations. No download required, works on any device.
How to Use This Scientific Calculator
- Click buttons to enter numbers and operations
- Use sin, cos, tan for trigonometry (toggle RAD/DEG mode)
- Use ln for natural logarithm, log for base-10 logarithm
- Use √ for square root, xʸ for exponents
- Use π for pi (3.14159...), e for Euler's number (2.71828...)
- Press = to calculate, AC to clear all, ⌫ to delete last character
Supported Functions
- Trigonometry: sin, cos, tan, asin, acos, atan (RAD or DEG mode)
- Logarithms: ln (natural log), log (base-10)
- Exponents & Roots: ^ (power), √ (square root)
- Constants: π (pi), e (Euler's number)
- Other: abs (absolute value), floor, ceil
- Basic: +, -, ×, ÷, parentheses
Frequently Asked Questions
What is the difference between RAD and DEG mode?
RAD (radians) and DEG (degrees) are units for measuring angles. Use DEG for everyday angles (90° = right angle). Use RAD for calculus and advanced math (π/2 radians = 90°). Our calculator supports both.
Is this calculator allowed for exams?
This is a non-programmable scientific calculator similar to Casio FX-991ES or TI-30XS. Check your exam regulations — many allow non-programmable scientific calculators.
What is the best scientific calculator for students?
Popular models include Casio FX-991EX (advanced), TI-30XS MultiView (easy to use), and Desmos online (free). Our online version replicates these functions.
💡 Pro Tip: Use RAD mode for calculus problems (derivatives, integrals) and DEG mode for geometry/trigonometry. Bookmark this calculator for homework, exams, or quick calculations.