Photometry & ImagingKilocandela per Square Meter to Foot Lamberts

Kilocandela per Square Meter to Foot-Lamberts

Methodology·How We Verify

Snapshot

1 Kilocandela per Square Meter equals 291.863508 Foot-Lamberts.

Reference basis: This conversion uses fixed luminance constants anchored to candela per square meter.
Example: For 5 Kilocandela per Square Meter, the result equals 1,459.31754 Foot-Lamberts.

Interactive conversion

Converter Calculator

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

291.863508 Foot-Lamberts (fL)

Switch

API and AI agent access

Kilocandela per Square Meter to Foot-Lamberts.

Machine-readable identifiers

Conversion family: photometry-imaging
Source unit: kilocandela_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": "kilocandela_per_square_meter",
  "to": "foot_lamberts"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "photometry-imaging",
    "value": 1,
    "from": "kilocandela_per_square_meter",
    "to": "foot_lamberts",
    "result": {
      "raw": 291.863507963,
      "display": "291.863508"
    },
    "canonicalPath": "/photometry-imaging/kilocandela-per-square-meter-to-foot-lamberts/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

The converter converts kilocandela per square meter into foot-lamberts by normalizing both luminance units through candela per square meter. Formula: fL = kcd/m2 × 291.863507963. 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 Kilocandela per Square Meter = 291.863508 Foot-Lamberts.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Kilocandela per Square Meter (kcd/m2)	Foot-Lamberts (fL)
1	291.863508
5	1,459.31754
10	2,918.63508
25	7,296.587699
50	14,593.175398
100	29,186.350796
250	72,965.876991
500	145,931.753982
1000	291,863.507963

Questions & answers

Frequently Asked Questions

Why is Kilocandela 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 kilocandela 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 Kilocandela per Square Meter to Foot-Lamberts?

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