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General Free Online Calculator

Scientific Calculator

Full-featured scientific calculator with trig, log, and advanced math.

Scientific Calculator

Free

Formula & How It's Calculated

Trig: sin(x), cos(x), tan(x) [DEG or RAD mode] Log: log(x) = log₁₀(x), ln(x) = logₑ(x) Power: x^n, √x = x^0.5, n! = 1×2×3×…×n

Example Calculations

sin(30°) = 0.5 | cos(60°) = 0.5 | tan(45°) = 1

log(1000) = 3 | ln(e) = 1 | √144 = 12

5! = 120 | 2^10 = 1024 | π² = 9.8696

How It Works

  1. Enter numbers using the digit buttons.
  2. Press function buttons (sin, cos, log, √) to apply to the current number.
  3. Use operator buttons (+, −, ×, ÷) then press = to calculate.
  4. Toggle DEG/RAD for trigonometry angle mode.
  5. Memory buttons: M+ add, M− subtract, MR recall, MC clear.
  6. Press History to view recent calculations.

Common Questions

Scientific Calculator — Frequently Asked Questions

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Scientific Calculator Online – Full Function Free Tool

Our online scientific calculator provides all the functions of a physical scientific calculator — trigonometry, logarithms, exponents, square roots, factorials, memory functions, and more — directly in your browser with no download required.

Trigonometry Functions Explained

Sine (sin), cosine (cos), and tangent (tan) are the three primary trigonometric functions. Our calculator supports both Degree and Radian modes — toggle with the DEG/RAD button. Common values: sin(30°)=0.5, cos(60°)=0.5, tan(45°)=1. The inverse functions (asin, acos, atan) find the angle from a ratio.

Logarithms: log vs ln

log(x) means log base 10 — how many times must you multiply 10 to get x? log(1000)=3. ln(x) is the natural logarithm — base e (Euler's number ≈ 2.718). ln(e)=1, ln(e²)=2. Both are essential for exponential growth, compound interest, and scientific calculations.

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