🔬 Scientific Calculator
Full-featured scientific calculator with trigonometry, logarithms, powers, factorials and more.
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Keyboard Shortcuts
Enter CalculateEsc ClearBackspace Delete last0-9 NumbersHow to Use the Scientific Calculator
This free online scientific calculator supports all standard mathematical operations including trigonometry, logarithms, exponentials, factorials, and constants π and e. It supports both mouse/touch input and full keyboard entry — type numbers and operators directly, press Enter to calculate, and Escape to clear.
Function Reference Guide
sin / cos / tan — Trigonometric ratios (input in degrees)
log — Base-10 logarithm | ln — Natural logarithm (base e)
√ — Square root | xʸ — x raised to power y
n! — Factorial (10! = 3,628,800) | 1/x — Reciprocal
π = 3.14159... | e = 2.71828... (Euler's number)
log — Base-10 logarithm | ln — Natural logarithm (base e)
√ — Square root | xʸ — x raised to power y
n! — Factorial (10! = 3,628,800) | 1/x — Reciprocal
π = 3.14159... | e = 2.71828... (Euler's number)
Common Scientific Calculator Uses
Trigonometry
sin(30°) = 0.5, cos(60°) = 0.5, tan(45°) = 1. Used in engineering, architecture, physics, and navigation. Always verify your calculator is in degree mode, not radian mode.
Logarithms
log(100) = 2, log(1000) = 3, ln(e) = 1. Used in chemistry (pH), sound (decibels), earthquakes (Richter scale), finance (compound growth), and statistics.
Factorials in Probability
n! is used to calculate permutations and combinations. P(n,r) = n! ÷ (n−r)! and C(n,r) = n! ÷ (r! × (n−r)!). Essential for competitive exam probability questions.
Exam Preparation
CBSE, JEE, NEET, CAT and competitive exams require scientific calculator skills. Practice with this online calculator to build speed and accuracy before the exam.