What does the Resistor Color Code Calculator work out?

Read a 4-band resistor, or find the bands for a value. It is one of the Everyday & Tech tools on Mondo Knows.

How is the Resistor Color Code Calculator calculated?

You get an instant answer with the working shown underneath.

Do I need to sign up, and is my data stored?

No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

Mondo Knows Tools

Resistor Color Code Calculator

Read a 4-band resistor, or find the bands for a value. Use the free resistor color code calculator below to get an instant answer, with the formula shown so you can check the maths and trust the result. Free, private, and no sign-up.

Band 1

Band 2

Multiplier

Tolerance

Mondo says

Resistance

1 kohm

Tolerance+/- 5%

Range950 to 1,050 ohm

Resistor Color Code Calculator: common questions

What does the Resistor Color Code Calculator work out?: Read a 4-band resistor, or find the bands for a value. It is one of the Everyday & Tech tools on Mondo Knows.
How is the Resistor Color Code Calculator calculated?: You get an instant answer with the working shown underneath.
Do I need to sign up, and is my data stored?: No sign-up, and nothing you type is sent anywhere. The calculation runs in your own browser, so the figures stay on your device and the page works offline once loaded.

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Estimates for general guidance only. This is not financial, medical or legal advice. Everything runs in your browser and nothing you type is stored.