Stilbs to Lamberts Converter
Enter the luminance in stilbs below to convert it to lamberts.
Convert Stilbs to Lamberts
Enter a value in stilbs (sb) to convert to lamberts (L).
Stilb to Lambert Conversion Table
Table showing various stilb measurements converted to lamberts. Click any preset value or arrow to load it into the converter.
| Stilbs (sb) | Lamberts (L) |
|---|---|
| 1 sb | 3.1415927 L |
| 2 sb | 6.2831853 L |
| 2.5 sb | 7.8539816 L |
| 5 sb | 15.7079633 L |
| 10 sb | 31.4159265 L |
| 15 sb | 47.1238898 L |
| 20 sb | 62.8318531 L |
| 25 sb | 78.5398163 L |
| 30 sb | 94.2477796 L |
| 50 sb | 157.0796327 L |
How to Convert Stilbs to Lamberts
To convert stilbs to lamberts, multiply the luminance by the following conversion ratio: 3.1415927 lamberts/stilb.
Since one stilb is equal to 3.1415927 lamberts, you can use this simple formula to convert:
The luminance in lamberts is equal to the luminance in stilbs multiplied by 3.1415927.
For example, here's how to convert 5 stilbs to lamberts using the formula above.
How Many Lamberts Are in a Stilb?
There are 3.1415927 lamberts in a stilb, which is why we use this value in the formula above.
Our stilb to lambert calculator automatically converts your luminance measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Stilbs and lamberts are both units used to measure luminance. Keep reading to learn more about each unit.
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. [1]
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.
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. [2]
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.
When converting luminance between stilbs (sb) and lamberts (L), keep full floating-point precision (1 sb = 3.1415927 L; 1 L = 0.3183099 sb) during intermediate calculations and round only the final lambert figure to match your instrument tolerance.
More Stilb & Lambert Conversions
Need to calculate in the opposite direction? Use our lamberts to stilbs calculator to switch your starting unit immediately. You can also explore related tools such as converting lamberts to stilbs, converting candelas per sq. meter (nits) to lamberts, or converting stilbs to candelas per sq. meter (nits).
Convert from Stilbs
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Luminance Metrology Standard — Stilbs (sb) to Lamberts (L)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Stilb (cd/cm²) (sb) & Lambert (L)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (sb to L)