Terms of Use
Last updated 13 November 2026. Using this site means accepting these terms.
What the calculators are for
The calculators, charts and explanations on this site are reference and planning aids for converting between kVA and amps and for related full-load current figures. They implement the standard electrical identities described on the methodology page.
Verify before you build
Electrical work can injure, kill and burn buildings down. Results here do not include cable derating, voltage drop, motor starting current, fault levels or any other site-specific factor, and they are not a substitute for the electrical code in force where the work is done or for a licensed electrician's or engineer's design. Always verify figures against the applicable code and the equipment manufacturer's data before ordering equipment or starting work.
Accuracy
Every formula and figure is checked against the sources cited on this site before publication, and errors are corrected as described in the editorial policy. Even so, the site is provided "as is": no warranty is given that any result is error-free or fit for a particular purpose, and the operator accepts no liability for decisions taken from these figures without independent verification.
Intellectual property
The text, design and code of this site belong to its operator. You may print the chart for your own workshop or site use. Scraping the site to republish its content as your own is not permitted.
External links
Links to standards bodies and other references are provided for convenience. The operator does not control those sites and is not responsible for their content or availability.
Changes
These terms may be updated; the date above will change when they are. Continued use of the site after a change means acceptance of the updated terms.
Contact
Questions about these terms: email ianwelkins@gmail.com, or use the contact page.