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Wire gauge (AWG) calculator
Diameter, area, resistance and safe current of a wire gauge, and the voltage drop over your cable run.
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About Wire gauge (AWG) calculator
Look up diameter, cross-section area, resistance per length and a safe current for any AWG size, and check the voltage drop across your cable run. AWG numbers run backwards: a smaller number is a thicker wire, and every 6 gauges roughly halves the diameter.
How to use Wire gauge (AWG) calculator
- Enter your numbers above.
- The result updates instantly as you type.
- Change any value to compare different cases.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
What is thicker, 10 AWG or 14 AWG?
10 AWG is thicker. Lower AWG numbers mean larger diameter, so 10 AWG carries more current than 14 AWG.
Is Wire gauge (AWG) calculator free?
Yes. Wire gauge (AWG) calculator on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.