Scientific Calculator

Free online scientific calculator with trigonometric functions (sin, cos, tan), logarithms, exponents, square roots, factorials, and memory functions. Works on any device, no download needed.

Scientific Calculator
 
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Scientific Calculator Functions

This scientific calculator supports all standard operations needed for algebra, trigonometry, calculus, and statistics courses. The DEG/RAD toggle switches between degree and radian mode for trigonometric functions.

Quick Reference

FunctionDescriptionExample
sin / cos / tanTrigonometric functionssin(30°) = 0.5
sin⁻¹ / cos⁻¹ / tan⁻¹Inverse trig (arcsin, etc.)sin⁻¹(0.5) = 30°
lnNatural logarithm (base e)ln(e) = 1
logCommon logarithm (base 10)log(100) = 2
√Square root√(144) = 12
xʸPower / exponent2^10 = 1024
n!Factorial5! = 120

Frequently Asked Questions

When should I use DEG vs RAD mode?+
Use DEG (degrees) for everyday geometry and most school problems. Use RAD (radians) for calculus, physics, and engineering where angles are expressed as multiples of π. 180° = π radians.
How do I calculate e to a power?+
Press "e" to insert Euler's number (~2.71828), then press "xʸ" to raise it to any power. For example, e^2 ≈ 7.389.
How does the memory function work?+
MS stores the current display value in memory. MR recalls the stored value into the display. MC clears the memory. This is useful for multi-step calculations.

About the Scientific Calculator

This free scientific calculator helps you get accurate results instantly without needing to work through the math manually. Whether you need a quick estimate or a precise figure, having a reliable tool on hand saves time and reduces errors compared to manual calculation.

How to Use This Calculator

  1. Enter your values in the input fields above. Each field is labeled to guide you.
  2. Double-check your inputs — results are only as accurate as the numbers you enter.
  3. Click the Calculate button to see your result instantly.
  4. Use the result for your planning, budgeting, or decision-making.

Why Accurate Calculations Matter

Small errors in math calculations can compound into significant problems. A 1% miscalculation in a budget or measurement can translate to hundreds or thousands of dollars in wasted resources, or result in having to redo work entirely. This calculator uses the standard formulas and methods to give you reliable results you can trust.

Tips for Getting the Best Results

Frequently Asked Questions

Is this calculator free? Yes — completely free with no account, login, or payment required. Use it as many times as you need.

How accurate are the results? This calculator uses the standard formulas for scientific calculations. Results are accurate for typical use cases. For specialized or high-stakes applications, consult a professional.

Does it work on mobile? Yes. This calculator is fully responsive and works on smartphones, tablets, and desktops.