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Scientific Calculator

Full-featured scientific calculator with history and memory

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What is Scientific Calculator?

Free online scientific calculator. Perform advanced math operations including trigonometry, logarithms, powers, roots, and more. Works in your browser. Fast, accurate mathematical calculators that show step-by-step working. TekPulse's Scientific Calculator is completely free — no signup, no ads in results, and no data stored on our servers.

How to Use Scientific Calculator Online

  1. Use the number pad or your keyboard to enter values
  2. Access trigonometric functions (sin, cos, tan), logarithms (log, ln), and powers using the function buttons
  3. Toggle between Degrees and Radians mode for trigonometric calculations
  4. Use MR, M+, M−, MC for memory operations
  5. View your calculation history in the log panel to refer back to previous results

Why Use TekPulse Scientific Calculator?

Runs Entirely in Your Browser
All calculations happen instantly with JavaScript — no data is sent to a server
Trigonometry & Logarithms
Supports sin, cos, tan and their inverses, log (base 10), and ln (natural log), with switchable DEG/RAD mode
Calculation History & Memory
Keeps your last 20 calculations and supports M+/M−/MR/MC memory functions
Powers & Roots
Includes squares, cubes, square roots, cube roots, and exponent (xʸ) operations

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Frequently Asked Questions

BODMAS: Brackets, Orders (powers/roots), Division, Multiplication, Addition, Subtraction. Always evaluate in this order. Example: 2 + 3 × 4 = 2 + 12 = 14, NOT 20.

A logarithm is the inverse of exponentiation. log₁₀(100) = 2 means 10² = 100. The natural log (ln) uses base e (≈2.718). Logarithms are used in science, engineering, finance (compound interest), and decibel scales.

In a right triangle: sin = opposite/hypotenuse, cos = adjacent/hypotenuse, tan = opposite/adjacent. They relate angles to side lengths and are fundamental in geometry, physics, and engineering.

e ≈ 2.71828 is the base of natural logarithms. It appears in compound interest, population growth, radioactive decay, and probability. It is the unique number where the derivative of eˣ is eˣ itself.

Degrees (°) and radians are both units for measuring angles. 360° = 2π radians. 180° = π radians. 90° = π/2 radians. Scientific calculators and programming languages typically default to radians.

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