Browse commonly used physical constants and their values. Results are estimates based on the values you enter; check assumptions and units before using them for a real project.

How to use it

Enter the requested values in the displayed units.
Choose Calculate and review the result.

Frequently Asked Questions

Is this tool free?

Yes. It runs locally in your browser.

Is this a professional engineering design?

No. Calculations are preliminary estimates and do not replace applicable codes or review by a qualified professional.

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