When to use this calculator
Evaluate arithmetic, powers, parentheses and common scientific functions. Supports sin, cos, tan, sqrt, abs, ln, log, exp, pi, e and factorial. User expressions are parsed, never executed as code.
Explore the scientific & everyday calculation calculators for other questions in this topic. For a related calculation, use the Scientific Notation Calculator: Express a finite number in standard coefficient-times-power-of-ten notation.
Check angle mode and write multiplication explicitly
The sine of 30 degrees is different from the sine of 30 radians. Select the angle mode before evaluating trigonometric expressions. Write 2*pi instead of 2pi, and use parentheses to make the intended order clear. The expression parser supports the functions listed on this page, not arbitrary code.
PUTTING IT INTO PRACTICE
Scientific: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Expression | sqrt(144)+2^3 |
| Angle mode | degrees |
| Result | 20 |
- Check the input labels and enter the example values above.
- Apply the relationship: Apply parentheses, functions, powers, multiplication/division, then addition/subtraction..
- The result is 20 , rounded for display.
How to interpret your result
Supports sin, cos, tan, sqrt, abs, ln, log, exp, pi, e and factorial. User expressions are parsed, never executed as code.
Expression calculators apply operation precedence rather than left-to-right keypress behaviour. Scientific angle functions use the selected degree or radian mode. Significant-digit rounding describes displayed precision, not measurement accuracy.
Frequently asked questions
Why does a valid-looking expression fail?
A missing closing bracket, an unsupported function or a result outside the real-number domain can cause an error. For example, this calculator does not return complex roots for sqrt(-1).
Does a rounded result become more accurate?
No. Rounding changes presentation. The accuracy of the result still depends on input measurements, assumptions and numerical method.
When is the scientific calculator useful?
Evaluate arithmetic, powers, parentheses and common scientific functions. Supports sin, cos, tan, sqrt, abs, ln, log, exp, pi, e and factorial. User expressions are parsed, never executed as code.
How do I use the scientific calculator?
Enter expression, angle mode. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Apply parentheses, functions, powers, multiplication/division, then addition/subtraction..
What should I check before using the result?
Supports sin, cos, tan, sqrt, abs, ln, log, exp, pi, e and factorial. User expressions are parsed, never executed as code.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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