LED Bin Matching Calculator

MacAdam ellipse uniformity check for LED arrays — CIE 1976 u’v’ colour space

Reference LED (Bin Standard)

Target CCT (K)

CIE x

CIE y

Max MacAdam Steps

Enter CCT to auto-fill approximate CIE x,y from the Planckian locus.

LED Samples to Test

Label

CIE x

CIE y

Reference

Label

CIE x

CIE y

Label

CIE x

CIE y

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Pass

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Fail

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Max Steps Found

CIE u’v’ Chromaticity Plot

Results Per LED Sample

Label	CIE x	CIE y	u’	v’	Delta u’v’	MacAdam Steps	Status

The calculators and tools on LightingCalc.lighting are provided for general guidance and informational purposes only. Results are estimates based on standard formulas and the values you enter — they do not constitute professional engineering, electrical, or architectural advice. Always verify calculations with a qualified professional before making decisions for any safety-critical, code-compliance, or commercial application. LightingCalc.lighting makes no representations or warranties as to the accuracy or completeness of any result, and accepts no liability for errors, omissions, or any outcomes arising from reliance on this information.