How to use the Scientific Calculator in a few steps
The Scientific Calculator evaluates your expression as you build it. Follow these steps:
Step 1: Choose degree or radian mode
Before using trig functions, pick the angle unit — degrees or radians — that matches your problem. This determines how sin, cos, and tan interpret their inputs.
Step 2: Build your expression
Type your formula using the number pad, operator keys, and function buttons. Use brackets to group terms, and spread long calculations across multiple lines as needed.
Step 3: Read the instant result
The result updates as you type, so you don't press a separate compute button. If the answer looks wrong, check your brackets and function syntax.
What you need to get started
Only a modern browser such as Chrome, Firefox, Safari, or Edge. There's no installation and no signup — open the calculator, type your expression, and read the answer.
Verdict
With the Scientific Calculator you get correct results for everything from basic arithmetic to advanced trigonometry, with instant feedback.