Free Scientific Calculator
✓ No Download ✓ Mobile Friendly ✓ Scientific Functions ✓ Free to Use
Expression / Result
0
Click the calculator to enable keyboard shortcuts.
⌨️ Functions & Keyboard Shortcuts (Click to Expand)
Use the buttons or your keyboard for faster calculations.
Basic Input Shortcuts
0-9
Number input
+ - * /
Basic operations
( )
Parentheses
.
Decimal point
Enter
Calculate
C
Clear all
Backspace
Delete last character
Available Functions
Square root
^
Power / exponent
sin
Sine in degrees
cos
Cosine in degrees
tan
Tangent in degrees
ln
Natural log
log
Base-10 log
π
Pi constant
e
Euler's number
n!
Factorial
Pro Tip: You can solve expressions such as (sin(45)+sqrt(16))^2 directly.
Popular Functions Quick Guide
Fractions
Use decimal notation such as 0.5 for 1/2.
Square Root
Enter a value, then press √.
Exponents
Use ^ for powers, for example 2^3 = 8.
Trigonometry
sin, cos, tan use degree mode.
How to Use This Calculator
  • Basic Operations: Enter numbers and use +, −, ×, ÷. Use brackets to group parts of an expression.
  • Exponent: Use ^. Example: 2^5 = 32.
  • Square Root: Enter a value and press .
  • π and e: Use π for 3.14159... and e for 2.71828...
  • Trigonometry: Enter an angle in degrees, then press sin, cos, or tan.
  • Logarithms: Use log for base 10 and ln for the natural logarithm.
  • Factorial: Enter a whole number and press n! For example, 5! = 120.
  • Keyboard Shortcuts: Enter calculates, C clears, Backspace deletes the last character.
  • Scientific Notation: You can type values such as 1e3 for 1000.
Tips & Tricks
  • Use brackets to control calculation order.
  • Trigonometric functions are interpreted in degrees.
  • Errors display as Err.
Quick Example:
To calculate sin(30)+5^2, enter 30, apply sin, then add 5^2 and press =. Result: 25.5
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About: This calculator and educational content is provided by Numbers Institutes and Education LLC, a leading tutoring center in Dubai supporting students in mathematics and related subjects.

Scientific Calculator FAQs

What is a scientific calculator?

A scientific calculator is a calculator designed for mathematics, science, and engineering calculations. It does more than a standard calculator by including functions like trigonometry, logarithms, exponents, roots, and scientific notation.

How do I use a scientific calculator?

Enter numbers, then apply operators or functions. Use brackets for grouped expressions, use the trigonometric keys for angles, and press = to calculate the final result.

How do I enter scientific notation on this calculator?

You can type values such as 1e3 for 1000 or 2.5e-4 for 0.00025 directly into the expression.

How do I work with fractions?

This calculator uses decimal input. For example, enter 0.5 instead of 1/2 and 0.25 instead of 1/4.

How do I calculate powers and exponents?

Use the ^ key. Example: enter 2, press ^, enter 5, then press =.

What does ln mean?

ln means natural logarithm, which is the logarithm with base e.

Does this calculator support trigonometry?

Yes. It supports sin, cos, and tan, and it interprets the input angle in degrees.

Can I use keyboard shortcuts?

Yes. Click the calculator first, then use number keys, operators, Enter, C, and Backspace.