CRI to TM-30 Converter -

Converters & Utilities

CRI to TM-30 Converter

Translate between legacy CRI (Ra) and modern TM-30 color fidelity metrics. Understand what your CRI score means in terms of Rf (fidelity), Rg (gamut), and real-world color appearance.

Input — CRI (Ra)

CRI Value 80

0 (poor)508090100

CRI (Ra)

Good

—

Rf (TM-30 Fidelity)

—

Rg (TM-30 Gamut)

—

R9 (Red sat., est.)

—

Appearance

Fidelity vs Gamut Chart

CRI (Ra)

Single average score. Only 8 test colors (R1–R8). Misses saturated reds (R9). Can be gamed by manufacturers.

TM-30 Rf + Rg

99 reference samples. Rf = fidelity (accuracy). Rg = gamut (vividness). More complete picture of real-world color quality.

Common Lighting Products — Reference

Standard LED (budget)70–8060–75Acceptable

Premium LED80–9075–85Good

High-CRI LED90–9585–90Very Good

Museum / Film LED97–10090–97Excellent

Incandescent / Halogen100~99Reference

Cool-white fluorescent60–7555–70Poor

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.