RGB ↔ CMYK
Calculate RGB ↔ CMYK instantly with the exact formula and a worked example.
RGB ↔ CMYK
R
G
B
K (CMYK)
0.215686
More about: RGB ↔ CMYK
What it calculates
The “RGB ↔ CMYK” calculator computes K (CMYK) from 3 parameters: r, g, b.
A converter between units of measure, currencies, and sizes.
Example calculation
With parameters R = 100, G = 150, B = 200 the result is 0.2157.
How to use
- Enter r, g and b — each field above is adjustable with a slider.
- K (CMYK) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is RGB ↔ CMYK calculated?
The RGB ↔ CMYK calculator computes K (CMYK) from r, g, b. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the RGB ↔ CMYK calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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