Scientific Calculator β Free Online Tool
A full scientific calculator with trig, logs, powers, roots, pi and e.
About Scientific Calculator
The Scientific Calculator brings advanced maths to your browser with buttons for trigonometry, logarithms, powers, square roots and the constants pi and e. You build an expression on screen, switch between degrees and radians for trig, and evaluate it with a single tap.
It suits students, engineers and anyone who needs more than basic arithmetic without installing an app. Calculations happen instantly and locally, and keyboard support lets you press Enter to evaluate.
How to Use Scientific Calculator
- Choose DEG or RAD depending on whether you want trig functions in degrees or radians.
- Tap the number and function buttons to build your expression.
- Press "=" or hit Enter to evaluate it.
- Use C to clear or the backspace key to remove the last character.
Key Features
Trigonometry, logarithms, powers and roots
Degree and radian modes for trig functions
Built-in pi and e constants
Keyboard support with Enter to evaluate
Safe expression parsing that runs in your browser
Frequently Asked Questions
What is the difference between DEG and RAD?
DEG interprets trig angles in degrees, while RAD uses radians. Choose the mode that matches your problem before calculating sin, cos or tan.
What do log and ln mean here?
log is the base-10 logarithm and ln is the natural logarithm (base e). Both are available as dedicated buttons.
How do I calculate powers and roots?
Use the x^y button to raise a number to a power and the square root button for roots. For example, type 2^10 then press equals.
Is my input safe to evaluate?
The calculator only allows a whitelist of mathematical functions and symbols, rejecting anything else, so expressions are evaluated safely in your browser.