Lamberts to Stilbs Converter
Enter the luminance in lamberts below to convert it to stilbs.
Convert Lamberts to Stilbs
Enter a value in lamberts (L) to convert to stilbs (sb).
Lambert to Stilb Conversion Table
Table showing various lambert measurements converted to stilbs. Click any preset value or arrow to load it into the converter.
| Lamberts (L) | Stilbs (sb) |
|---|---|
| 1 L | 0.3183099 sb |
| 2 L | 0.6366198 sb |
| 2.5 L | 0.7957747 sb |
| 5 L | 1.5915494 sb |
| 10 L | 3.1830989 sb |
| 15 L | 4.7746483 sb |
| 20 L | 6.3661977 sb |
| 25 L | 7.9577472 sb |
| 30 L | 9.5492966 sb |
| 50 L | 15.9154943 sb |
How to Convert Lamberts to Stilbs
To convert lamberts to stilbs, multiply the luminance by the following conversion ratio: 0.3183099 stilbs/lambert.
Since one lambert is equal to 0.3183099 stilbs, you can use this simple formula to convert:
The luminance in stilbs is equal to the luminance in lamberts multiplied by 0.3183099.
For example, here's how to convert 5 lamberts to stilbs using the formula above.
How Many Stilbs Are in a Lambert?
There are 0.3183099 stilbs in a lambert, which is why we use this value in the formula above.
Our lambert to stilb calculator automatically converts your luminance measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Lamberts and stilbs are both units used to measure luminance. Keep reading to learn more about each unit.
What Is a Lambert?
A lambert is a unit of luminance equal to 3,183.0988618 candelas per sq. meter (cd/m²), the base unit for luminance. Equal to (10,000/π) ≈ 3,183.099 cd/m². [1]
The lambert is classified as a metric and SI-compatible unit of luminance. Lamberts can be abbreviated as L; for example, 1 lambert can be written as 1 L.
When working with lamberts (L) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, lamberts (L) are widely used across large-scale industrial, bulk, and macro-level luminance specifications within SI metric workflows, engineering documentation, and technical data sheets.
What Is a Stilb?
A stilb is a unit of luminance equal to 10,000 candelas per sq. meter (cd/m²), the base unit for luminance. CGS luminance unit equal to 10,000 cd/m². [2]
The stilb is classified as a metric and SI-compatible unit of luminance. Stilbs can be abbreviated as sb; for example, 1 stilb can be written as 1 sb.
When working with stilbs (sb) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, stilbs (sb) are widely used across large-scale industrial, bulk, and macro-level luminance specifications within SI metric workflows, engineering documentation, and technical data sheets.
When converting luminance between lamberts (L) and stilbs (sb), keep full floating-point precision (1 L = 0.3183099 sb; 1 sb = 3.1415927 L) during intermediate calculations and round only the final stilb figure to match your instrument tolerance.
More Lambert & Stilb Conversions
Need to calculate in the opposite direction? Use our stilbs to lamberts calculator to switch your starting unit immediately. You can also explore related tools such as converting stilbs to lamberts, converting candelas per sq. meter (nits) to stilbs, or converting lamberts to candelas per sq. meter (nits).
Convert from Lamberts
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Luminance Metrology Standard — Lamberts (L) to Stilbs (sb)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Lambert (L) & Stilb (cd/cm²) (sb)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (L to sb)