Scientific Calculator
Solve arithmetic, trigonometry, logarithms, roots, powers, and factorials with clear DEG and RAD controls
Build and solve expressions
Choose the angle mode, build an expression, then evaluate and reuse the result
- Choose modeUse degrees or radians.
- Enter expressionUse the keypad or keyboard.
- Use resultCopy it, reuse Ans, or review recent calculations.
Build an expression
Use real-number functions with standard mathematical precedence
Build an expression with the keypad or keyboard, then press Equals.
Ready to calculate
Build and check multi-step expressions
Choose DEG for degree-based angles or RAD for radians, then use parentheses and standard mathematical precedence to control the calculation.
FAQs
What is the difference between DEG and RAD?
DEG uses degrees such as 90 degrees. RAD uses radians such as pi divided by two.
Which calculations can I enter?
You can combine arithmetic, parentheses, powers, roots, factorials, logarithms, trigonometric functions, pi, e, and the previous answer.
Why can a calculation show a domain error?
Some real-number operations are undefined, such as division by zero or the square root of a negative number.
How precise are the results?
The calculator uses standard browser number precision and rounds the display for readability. Verify results that affect engineering, safety, finance, or other high-stakes work.
Can I use my keyboard?
Yes. Focus the calculator and type supported numbers, operators, parentheses, and functions, then press Enter to calculate.
What does Ans do?
Ans inserts the most recent successful result so you can continue a calculation without typing the value again.