Candelas per Sq. Meter to Foot-lamberts Converter
Enter the luminance in candelas per sq. meter below to convert it to foot-lamberts.
Convert Candelas per Sq. Meter (Nits) to Foot-lamberts
Enter a value in candelas per sq. meter (nits) (cd/m²) to convert to foot-lamberts (fL).
Candela per Square Meter to Foot-lambert Conversion Table
Table showing various candela per square meter measurements converted to foot-lamberts. Click any preset value or arrow to load it into the converter.
| Candelas per Sq. Meter (Nits) (cd/m²) | Foot-lamberts (fL) |
|---|---|
| 1 cd/m² | 0.2918635 fL |
| 2 cd/m² | 0.583727 fL |
| 2.5 cd/m² | 0.7296588 fL |
| 5 cd/m² | 1.4593175 fL |
| 10 cd/m² | 2.9186351 fL |
| 15 cd/m² | 4.3779526 fL |
| 20 cd/m² | 5.8372702 fL |
| 25 cd/m² | 7.2965877 fL |
| 30 cd/m² | 8.7559052 fL |
| 50 cd/m² | 14.5931754 fL |
How to Convert Candelas per Sq. Meter to Foot-lamberts
To convert candelas per sq. meter to foot-lamberts, multiply the luminance by the following conversion ratio: 0.2918635 foot-lamberts/candela per square meter.
Since one candela per square meter is equal to 0.2918635 foot-lamberts, you can use this simple formula to convert:
The luminance in foot-lamberts is equal to the luminance in candelas per sq. meter multiplied by 0.2918635.
For example, here's how to convert 5 candelas per sq. meter to foot-lamberts using the formula above.
How Many Foot-lamberts Are in a Candela per Square Meter?
There are 0.2918635 foot-lamberts in a candela per square meter, which is why we use this value in the formula above.
Our candela per square meter to foot-lambert calculator automatically converts your luminance measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Candelas per Sq. Meter and foot-lamberts are both units used to measure luminance. Keep reading to learn more about each unit.
What Is a Candela per Square Meter?
SI display brightness and luminance unit (1 nit = 1 cd/m²). It serves as a primary reference unit for measuring luminance across scientific and practical applications. [1]
The candela per square meter is classified as an International System of Units (SI) unit of luminance. Candelas per Sq. Meter can be abbreviated as cd/m²; for example, 1 candela per square meter can be written as 1 cd/m².
As the primary coherent reference unit for luminance in this category, all other luminance units are mathematically anchored to the candela per square meter (cd/m²).
In practice, candelas per sq. meter (cd/m²) are widely used across standard luminance applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
What Is a Foot-lambert?
A foot-lambert is a unit of luminance equal to 3.4262591 candelas per sq. meter (cd/m²), the base unit for luminance. Cinema projection luminance unit (1/π cd/ft² ≈ 3.426 cd/m²). [2]
The foot-lambert is classified as a US customary unit of luminance. Foot-lamberts can be abbreviated as fL; for example, 1 foot-lambert can be written as 1 fL.
When working with foot-lamberts (fL) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, foot-lamberts (fL) are widely used across standard luminance applications within US customary workflows, engineering documentation, and technical data sheets.
When converting luminance between candelas per sq. meter (cd/m²) and foot-lamberts (fL), keep full floating-point precision (1 cd/m² = 0.2918635 fL; 1 fL = 3.4262591 cd/m²) during intermediate calculations and round only the final foot-lambert figure to match your instrument tolerance.
More Candela per Square Meter & Foot-lambert Conversions
Need to calculate in the opposite direction? Use our foot-lamberts to candelas per sq. meter (nits) calculator to switch your starting unit immediately. You can also explore related tools such as converting foot-lamberts to candelas per sq. meter (nits), converting candelas per sq. meter (nits) to kilocandelas per square meter, or converting candelas per sq. meter (nits) to stilbs.
Convert from Candelas per Sq. Meter
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Luminance Metrology Standard — Candelas per Sq. Meter (Nits) (cd/m²) to Foot-lamberts (fL)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Candela per Square Meter (Nit) (cd/m²) & Foot-lambert (fL)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (cd/m² to fL)