How to use this calculator
- Enter your own values in the labeled fields. Check the units and assumptions before comparing results. Only the fields needed for your selected calculation mode are shown.
- Your answer updates automatically. Review the calculation steps to see exactly how it was calculated.
- Copy, share, save, or download your result. Saved inputs stay on this device.
How the calculation works
Enter an explicit arithmetic expression using the supported function names. Powers associate to the right, so 2^3^2 means 2^(3^2). A leading minus has lower precedence than a power, so -2^2 is -4. The parser accepts mathematical tokens only; it does not execute entered code.
A worked example
sqrt(81) + 2^3 = 9 + 8 = 17.
Reading your result
Use the main result together with its units and supporting figures. Display values are rounded; calculations keep their underlying precision. A change in inputs or assumptions can change the answer. Compare the step-by-step working with your intended use before relying on an estimate.
Frequently asked questions
Which logarithm is log?
log is base 10; ln is the natural logarithm.
Can I omit the multiplication sign?
No. Write 2*pi and 2*(3+4), rather than implicit multiplication.
Sources & methodology
This calculator uses the mathematical identity and assumptions stated above. No current rates, prices, or external data are loaded. Conversion tools use international unit definitions.
Formula review: October 24, 2026. Read our methodology.