Photometry & ImagingCandela per Square Meter to Foot Lamberts

Candela per Square Meter to Foot-Lamberts

Methodology·How We Verify

Snapshot

1 Candela per Square Meter equals 0.291864 Foot-Lamberts.

Reference basis: This conversion uses fixed luminance constants anchored to candela per square meter.
Example: For 5 Candela per Square Meter, the result equals 1.459318 Foot-Lamberts.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

0.291864 Foot-Lamberts (fL)

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API and AI agent access

Candela per Square Meter to Foot-Lamberts.

Machine-readable identifiers

Conversion family: photometry-imaging
Source unit: candela_per_square_meter
Target unit: foot_lamberts

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "photometry-imaging",
  "value": 1,
  "from": "candela_per_square_meter",
  "to": "foot_lamberts"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "photometry-imaging",
    "value": 1,
    "from": "candela_per_square_meter",
    "to": "foot_lamberts",
    "result": {
      "raw": 0.291863507963,
      "display": "0.291864"
    },
    "canonicalPath": "/photometry-imaging/candela-per-square-meter-to-foot-lamberts/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

The converter converts candela per square meter into foot-lamberts by normalizing both luminance units through candela per square meter. Formula: fL = cd/m2 × 0.291863507963. That keeps the snapshot, calculator, common values, and mirror page aligned on one luminance basis.

This is useful for display brightness checks, projection calibration, and imaging workflows where legacy photometric units and modern cd/m²-based measurements need to match cleanly.

Method & Luminance Basis

Method basis: both units reduce through candela per square meter, then apply the fixed target-unit luminance relationship.
Applied factor: 1 Candela per Square Meter = 0.291864 Foot-Lamberts.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Candela per Square Meter (cd/m2)	Foot-Lamberts (fL)
1	0.291864
5	1.459318
10	2.918635
25	7.296588
50	14.593175
100	29.186351
250	72.965877
500	145.931754
1000	291.863508

Questions & answers

Frequently Asked Questions

Why is Candela per Square Meter to Foot-Lamberts useful in display and projection work?

This route is useful when comparing modern display-brightness values with legacy luminance units used in cinema, projection, calibration, and older imaging references.

When would I convert candela per square meter to foot-lamberts?

This route is useful when comparing modern display-brightness values with legacy luminance units used in projection, cinema, and older photometric references.

How do I reverse Candela per Square Meter to Foot-Lamberts?

Use the mirror Foot-Lamberts to Candela per Square Meter route; it applies the inverse relationship with the same cd/m²-based luminance assumptions.