Scientific Calculator
Use a free scientific calculator for arithmetic, powers, roots, trigonometry, logarithms, constants, and expressions.
Calculator updated
Use this page to get the result quickly, then review the formula, table, chart, or example for context.
- Solve arithmetic and scientific expressions
- Check trigonometry and logarithms
- Use constants like pi and e
- Formula, example, and related calculators
Formula
The calculator evaluates a valid math expression using the selected angle mode for trigonometric functions.
Example
sin(30) + sqrt(81) in degree mode equals 9.5.
When to Use
- Solve arithmetic and scientific expressions
- Check trigonometry and logarithms
- Use constants like pi and e
Common Mistakes
- Missing parentheses
- Using degree mode when radians are intended
- Entering unsupported symbols
References
Fast Result
The calculator updates from your inputs and keeps the result easy to copy, print, or save locally.
Transparent Formula
The formula and example show how the result is built, so the page is useful beyond a single calculation.
Related Next Steps
Use the related links to move from estimate to comparison, payoff, conversion, or planning.
How this scientific calculator works
Use a free scientific calculator for arithmetic, powers, roots, trigonometry, logarithms, constants, and expressions.
Enter the values you know, review the primary result, then use the table or chart to understand the details. The result is an estimate and should be checked against professional advice when money, medical, tax, legal, or engineering decisions are involved.
Frequently Asked Questions
Does this support degrees and radians?
Yes. Select the angle mode before calculating trigonometric expressions.
Can I use keyboard input?
Yes. Type directly in the expression field or use the on-screen buttons.
What functions are supported?
Common arithmetic, powers, square root, sin, cos, tan, log, ln, pi, and e are supported.