Foot-candles to Phot Converter

Summary

Enter a foot-candle value and get the equivalent in phot instantly; 1 fc = 0.00107639 ph.

How it works

1. Enter the illuminance value in foot-candles in the input field.
2. The converter applies the exact factor: ph = fc × 0.001076391041671.
3. The phot result appears instantly with the full formula shown.
4. Use the swap button to convert phot back to foot-candles.
5. Click any row in the reference table to load that value into the converter.

Use cases

• Interpret illuminance values from US light meters in CGS scientific units.
• Convert photographic foot-candle readings to phot for older optical references.
• Translate building-code illuminance specs from foot-candles to CGS for legacy documents.
• Cross-check historical photometric data that uses phot against modern fc readings.
• Verify illuminance unit conversions when working with pre-SI physics textbooks.
• Convert grow-light fc specs to phot for comparison with CGS-based horticulture research.

Frequently Asked Questions