Foot-lamberts to Candelas per Square Foot Converter
Enter the luminance in foot-lamberts below to convert it to candelas per square foot.
Convert Foot-lamberts to Candelas per Square Foot
Enter a value in foot-lamberts (fL) to convert to candelas per square foot (cd/ft²).
Foot-lambert to Candela per Square Foot Conversion Table
Table showing various foot-lambert measurements converted to candelas per square foot. Click any preset value or arrow to load it into the converter.
| Foot-lamberts (fL) | Candelas per Square Foot (cd/ft²) |
|---|---|
| 1 fL | 0.3183099 cd/ft² |
| 2 fL | 0.6366198 cd/ft² |
| 2.5 fL | 0.7957747 cd/ft² |
| 5 fL | 1.5915494 cd/ft² |
| 10 fL | 3.1830989 cd/ft² |
| 15 fL | 4.7746483 cd/ft² |
| 20 fL | 6.3661977 cd/ft² |
| 25 fL | 7.9577472 cd/ft² |
| 30 fL | 9.5492966 cd/ft² |
| 50 fL | 15.9154943 cd/ft² |
How to Convert Foot-lamberts to Candelas per Square Foot
To convert foot-lamberts to candelas per square foot, multiply the luminance by the following conversion ratio: 0.3183099 candelas per square foot/foot-lambert.
Since one foot-lambert is equal to 0.3183099 candelas per square foot, you can use this simple formula to convert:
The luminance in candelas per square foot is equal to the luminance in foot-lamberts multiplied by 0.3183099.
For example, here's how to convert 5 foot-lamberts to candelas per square foot using the formula above.
How Many Candelas per Square Foot Are in a Foot-lambert?
There are 0.3183099 candelas per square foot in a foot-lambert, which is why we use this value in the formula above.
Our foot-lambert to candela per square foot calculator automatically converts your luminance measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Foot-lamberts and candelas per square foot are both units used to measure luminance. Keep reading to learn more about each unit.
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). [1]
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.
What Is a Candela per Square Foot?
A candela per square foot is a unit of luminance equal to 10.7639104 candelas per sq. meter (cd/m²), the base unit for luminance. Equal to 10.7639 cd/m². [2]
The candela per square foot is classified as a US customary unit of luminance. Candelas per Square Foot can be abbreviated as cd/ft²; for example, 1 candela per square foot can be written as 1 cd/ft².
When working with candelas per square foot (cd/ft²) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, candelas per square foot (cd/ft²) are widely used across standard luminance applications within US customary workflows, engineering documentation, and technical data sheets.
When converting luminance between foot-lamberts (fL) and candelas per square foot (cd/ft²), keep full floating-point precision (1 fL = 0.3183099 cd/ft²; 1 cd/ft² = 3.1415926 fL) during intermediate calculations and round only the final candela per square foot figure to match your instrument tolerance.
More Foot-lambert & Candela per Square Foot Conversions
Need to calculate in the opposite direction? Use our candelas per square foot to foot-lamberts calculator to switch your starting unit immediately. You can also explore related tools such as converting candelas per square foot to foot-lamberts, converting candelas per sq. meter (nits) to kilocandelas per square meter, or converting kilocandelas per square meter to candelas per sq. meter (nits).
Convert from Foot-lamberts
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Luminance Metrology Standard — Foot-lamberts (fL) to Candelas per Square Foot (cd/ft²)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Foot-lambert (fL) & Candela per Square Foot (cd/ft²)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (fL to cd/ft²)