Nox to Foot-candles Converter

Summary

Enter a nox value and instantly get the equivalent in foot-candles, with the two-step formula and a dim-light reference table.

How it works

1. Enter the illuminance value in nox in the input field.
2. The converter first converts nox to lux by dividing by 1000.
3. It then converts that lux value to foot-candles by dividing by 10.76391.
4. The combined formula is: fc = nox ÷ 10763.91.
5. The result updates instantly as you type.
6. Click any row in the reference table to load a sample value.

Use cases

• Translate starlight or moonlight meter readings into foot-candles for US lighting reports.
• Work with historical photometry data expressed in nox when targeting foot-candle specifications.
• Design very low-light environments such as observatory surroundings or dark-sky preserves with US-standard measurements.
• Evaluate night-sky quality survey data against foot-candle thresholds used in American standards.
• Convert dim-light readings from environmental sensors into foot-candles for compliance documentation.
• Compare illuminance values across unit systems in academic or cross-border lighting research.

Frequently Asked Questions