Lamberts to Stilbs

Snapshot

1 Lamberts equals 0.31831 Stilbs. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.

Reference basis: This conversion uses fixed luminance constants anchored to candela per square meter.
Example: For 5 Lamberts, the result equals 1.591549 Stilbs.
Use the reverse page if you need the opposite direction with the same basis.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Converter Calculator

0.31831 Stilbs (sb)

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Explanation

This page converts Lamberts into Stilbs using fixed luminance constants anchored to candela per square meter. The direct answer, calculator, and common values table all follow the same factor.

Formula: Stilbs = Lamberts × 0.31831. Why: legacy luminance units such as foot-lamberts, lamberts, apostilbs, and stilbs each use fixed cd/m² equivalents, so the calculator normalizes through candela per square meter before applying the target unit.

Lamberts (L): a legacy luminance unit with a fixed candela-per-square-meter equivalent.

Stilbs (sb): a large legacy luminance unit equal to a fixed multiple of candela per square meter.

This route is useful when comparing modern display-brightness values with legacy luminance units used in projection, cinema, and older photometric references.

Because the route stays inside one cd/m2-based luminance model, the mirror page reverses the same constants without changing the underlying assumptions.

Method & Luminance Basis

Method basis: both units reduce through candela per square meter, then apply the fixed target-unit luminance relationship.
Applied factor: 1 Lamberts = 0.31831 Stilbs.
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Lamberts (L)	Stilbs (sb)
1	0.31831
5	1.591549
10	3.183099
25	7.957747
50	15.915494
100	31.830989
250	79.577472
500	159.154943
1,000	318.309886

Frequently Asked Questions

How many stilbs are in 1 lamberts?

1 Lamberts equals 0.31831 Stilbs on this page.

Why is Lamberts to Stilbs 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 lamberts to stilbs?

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 Lamberts to Stilbs?

Use the mirror Stilbs to Lamberts route; it applies the inverse relationship with the same cd/m²-based luminance assumptions.