Looking for a modern, easy-to-use online scientific calculator? Try our powerful, user-friendly engineering calculator—ideal for students, teachers, engineers, and professionals. Perform accurate math, physics, chemistry, and engineering calculations instantly, right in your browser. No installation or sign-up required—always free!

Who Is This Scientific Calculator For?

• Students (high school, college, university)
• Engineers & Architects
• Science & math teachers
• Researchers
• Anyone needing fast calculations, anywhere, anytime!

How Does This Science Calculator Work?

Our engineering calculator offers all the classic features you expect from a high-end scientific calculator—along with advanced tools designed for science, engineering, and technical math:

Supported Functions:

• Basic arithmetic: Addition (+), Subtraction (−), Multiplication (×), Division (÷)
• Scientific functions: Sine (sin), Cosine (cos), Tangent (tan), Logarithm (log, ln), Square root (√), Power (xʸ, x²), Inverse (1/x)
• Constants: π (Pi), e (Euler’s number)
• Parentheses, factorial, and sign change (±)
• Degree/Radian mode for trigonometric calculations—switch instantly with one click!

How To Use:

1. Enter your numbers, formulas, or functions directly (e.g., sin(45), log(100), 2+2*3, etc.).
2. Switch between DEG and RAD modes with the dedicated button.
3. After each calculation, use the answer directly in your next equation—just like a physical engineering calculator.
4. Get instant, clear results on an attractive, easy-to-read display.

Common Formulas (Explained Simply)

• Sine, Cosine, Tangent:
  sin(θ), cos(θ), tan(θ) — for θ in degrees or radians.
• Logarithm:
  log(x) for log base 10, ln(x) for natural log.
• Power:
  pow(x, y) means x to the yth power, x² for square, √x for square root.
• Factorial:
  x! (e.g. 5! = 120).

Why Use Our Scientific Online Calculator?

• Completely free and online
• No sign-up, no ads, no installation
• Mobile-friendly, works on any device
• Clean, modern design for distraction-free use
• Answers update instantly as you work
• Powered by advanced math logic for engineering and science

Try it now: Make math and science easier with the best free scientific calculator online—perfect for school, work, and everything in between!