Scientific Calculator | How to use and interpret results
Evaluate parentheses, powers, square roots, logarithms and trigonometric functions with a restricted expression grammar. DEG/RAD selection and domain errors are explicit parts of the calculation.
- Runs in your browser
- Nothing is uploaded
- No signup; device limits apply
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How to use this tool
Use function parentheses, such as sin(30), and choose the angle mode first. log is base ten and ln is natural logarithm; real logarithms require positive input.
Results and examples
In DEG mode sin(30) is approximately 0.5 and sqrt(9) is 3. The number 30 means a different angle in RAD mode, so a different result is expected.
Worked example
In DEG mode sin(30) is approximately 0.5 and sqrt(9) is 3. The number 30 means a different angle in RAD mode, so a different result is expected.
Limitations
- Complex numbers, matrices and symbolic equation solving are not provided.
- Floating-point arithmetic and display rounding limit precision.
Fields
| Field | Guidance and constraints |
|---|---|
| DEG (degrees) | Check the unit and format displayed beside this field. |
| RAD (radians) | Check the unit and format displayed beside this field. |
| Expression | Check the unit and format displayed beside this field. |
Data handling
Processing stays in the current browser tab; the site does not upload tool input for the calculation itself.
Sources
Frequently asked questions
Why does sin(30) change between modes?
In DEG mode sin(30) is approximately 0.5 and sqrt(9) is 3. The number 30 means a different angle in RAD mode, so a different result is expected.
Can I calculate a negative square root?
Complex numbers, matrices and symbolic equation solving are not provided. Floating-point arithmetic and display rounding limit precision.
