IlluminanceFoot Candles to Phot

Foot-candles to Phot

Snapshot

1 Foot-candle equals 0.001076 Phot. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.

Reference basis: This conversion uses exact lux-based illuminance definitions.
Example: For 10 Foot-candles, the result equals 0.010764 Phot.
Use the reverse page if you need the opposite direction with the same basis.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Interactive conversion

Converter Calculator

0.001076 Phot (ph)

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Machine access

Available to apps and AI agents

Foot-candles to Phot can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The identifiers below select the same calculation as the calculator.

Machine-readable identifiers

Conversion family: illuminance
Source unit: foot_candles
Target unit: phot

The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "illuminance",
  "value": 1,
  "from": "foot_candles",
  "to": "phot"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "illuminance",
    "value": 1,
    "from": "foot_candles",
    "to": "phot",
    "result": {
      "raw": 0.0010763910416709721,
      "display": "0.001076"
    },
    "canonicalPath": "/illuminance/foot-candles-to-phot/"
  }
}

Full API documentation

Explanation

Formula: Phot = Foot-candles × 0.001076. Why: phot is tied exactly to lux through the square-centimeter to square-meter area relationship, so the route normalizes through lux before applying the target unit.

Foot-candles (fc): an imperial illuminance unit based on lumens per square foot, common in lighting design, building standards, and photographic exposure references.

Phot (ph): a CGS illuminance unit equal to one lumen per square centimeter, which is exactly 10,000 lux.

This route is useful when translating illuminance values between lux-based and foot-candle scales for architectural lighting, workplace standards, and exposure measurements.

This conversion is purely multiplicative because both units reduce through lux using fixed illuminance definitions with no offset.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Foot-candle = 0.001076 Phot (using exact lux-based illuminance definitions).
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Foot-candles (fc)	Phot (ph)
1	0.001076
10	0.010764
50	0.05382
100	0.107639
300	0.322917
500	0.538196
1,000	1.076391
10,000	10.76391

Questions & answers

Frequently Asked Questions

What is 1 foot-candle in phot?

1 Foot-candle equals 0.001076 Phot on this page.

Does this Foot-candles to Phot page use the fixed lux equivalent for foot-candles?

Yes. Foot-candle routes use one fixed lux equivalent on this page, so architectural lighting and exposure values stay aligned across the direct answer, calculator, and table.

When would I convert foot-candles to phot?