Converters · NUMORA
Rgb Cmyk Calculator
The Desmos-style door: see the function. sin, cos, polynomials.
Open interactive calculatorHow to use
K = 1 − max(R,G,B)/255. Not an ICC profile.
Formula
C,M,Y = (1 − x/255 − K) / (1 − K)
FAQ
Is this Rgb Cmyk calculator accurate?
The formula and assumptions are shown on the page, and the engine is covered by audit tests. Results are for reference — not financial or medical advice.
Do I need an account?
No. Calculations run in your browser. Recents can stay on this device.
What inputs do I need?
K = 1 − max(R,G,B)/255. Not an ICC profile.
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