IlluminanceFoot Candles to Lux

Foot-candles to Lux

Snapshot

1 Foot-candle equals 10.76391 Lux. 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 107.639104 Lux.
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

10.76391 Lux (lx)

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Machine access

Available to apps and AI agents

Foot-candles to Lux 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: lux

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": "lux"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "illuminance",
    "value": 1,
    "from": "foot_candles",
    "to": "lux",
    "result": {
      "raw": 10.763910416709722,
      "display": "10.76391"
    },
    "canonicalPath": "/illuminance/foot-candles-to-lux/"
  }
}

Full API documentation

Explanation

Formula: Lux = Foot-candles × 10.76391. Why: this is a cross-system illuminance conversion. The calculator normalizes the value through lux, then applies the exact target-unit constant for consistent lighting and exposure work.

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

Lux (lx): the SI derived unit of illuminance, equal to one lumen incident on one square meter of surface area.

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 = 10.76391 Lux (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)	Lux (lx)
1	10.76391
10	107.639104
50	538.195521
100	1,076.391042
300	3,229.173125
500	5,381.955208
1,000	10,763.910417
10,000	107,639.104167

Questions & answers

Frequently Asked Questions

What is 1 foot-candle in lux?

1 Foot-candle equals 10.76391 Lux on this page.

Does this Foot-candles to Lux 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 lux?