Stilbs to Foot-lamberts Converter
Quick answer: To convert stilbs to foot-lamberts, multiply by 2,918.635. For example, 10 sb is 29,186.35 fL. One stilb equals 2,918.635 fL.
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Use the Stilbs to Foot-lamberts Converter
Stilbs to Foot-lamberts formula and what each symbol means
fL = sb × 2,918.635
| Symbol | Meaning |
|---|---|
| sb | Stilb |
| fL | Foot-lambert |
Stilbs to Foot-lamberts examples
1 sb
1 sb × 2,918.635 = 2,918.635 fL.
10 sb
10 sb × 2,918.635 = 29,186.35 fL.
100 sb
100 sb × 2,918.635 = 291,863.5 fL.
Stilbs compared with Foot-lamberts
One sb is 2,919 times as large as one fL, so your number gets bigger when you convert stilbs to foot-lamberts and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About stilbs and foot-lamberts
Stilb (sb): The stilb, 10,000 cd/m². Foot-lambert (fL): The foot-lambert, about 3.4263 cd/m².
How to calculate Stilbs to Foot-lamberts step by step
- Enter the value in sb (the starting unit).
- Multiply by 2,918.635, because 1 sb = 2,918.635 fL.
- The product is the value in fL. To go back, divide by 2,918.635 or multiply by 0.0003426259.
Popular luminance conversions
How to read your Stilbs to Foot-lamberts result
Quick estimate: multiply by about 2,900 to get foot-lamberts from stilbs; this is within 0.7% of the exact factor. Luminance is luminous intensity per unit area of a source.
| STILBS | FOOT-LAMBERTS |
|---|---|
| 1 | 2,918.635 |
| 2 | 5,837.27 |
| 5 | 14,593.18 |
| 10 | 29,186.35 |
| 20 | 58,372.7 |
| 50 | 145,931.8 |
| 100 | 291,863.5 |
| 1,000 | 2,918,635 |
Foot-lamberts to Stilbs: quick table
| FOOT-LAMBERTS | STILBS |
|---|---|
| 1 | 0.0003426259 |
| 5 | 0.00171313 |
| 10 | 0.003426259 |
| 25 | 0.008565648 |
| 50 | 0.0171313 |
| 100 | 0.03426259 |
| 250 | 0.08565648 |
| 500 | 0.171313 |
Common mistakes when calculating Stilbs to Foot-lamberts
- Mixing cd/ft² with cd/m²: the first is 10.764 times larger.
- Dividing when you should multiply: from sb to fL multiply by 2,918.635; from fL to sb divide by 2,918.635.
Stilbs to Foot-lamberts FAQ
How many fL are in 1 sb?
1 sb equals 2,918.635 fL.
How many sb are in 1 fL?
1 fL equals 0.0003426259 sb.
Is 1 sb = 2,918.635 fL an exact conversion?
The factor is shown rounded to 7 significant figures (2,918.635). The calculator above uses more digits.
What is a stilb (sb)?
The stilb, 10,000 cd/m².
How can I estimate stilbs to foot-lamberts in my head?
Quick estimate: multiply by about 2,900 to get foot-lamberts from stilbs; this is within 0.7% of the exact factor.
What is 25 sb in foot-lamberts?
25 sb = 72,965.88 fL (since 25 × 2,918.635).
What is 80 sb in foot-lamberts?
80 sb = 233,490.8 fL (since 80 × 2,918.635).
What is 500 sb in foot-lamberts?
500 sb = 1,459,318 fL (since 500 × 2,918.635).
How many decimals should I keep when converting sb to fL?
Match the precision of your original measurement. For example, 29,186.35 fL rounds to 29,200 fL at 3 significant figures; keep more digits only for engineering or scientific work.
More in Luminance converters
- Candelas per square foot to Stilbs Converter
- Candelas per square meter to Candelas per square foot Converter
- Candelas per square meter to Foot-lamberts Converter
- Foot-lamberts to Candelas per square meter Converter
- Candelas per square meter to Stilbs Converter
- Foot-lamberts to Candelas per square foot Converter
See all luminance converters tools · All Conversion calculators · Site map
Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the International System of Units (SI)