Lumens per Steradian to Hefnerkerze Converter
Enter the luminous intensity in lumens per steradian below to convert it to hefnerkerze.
Convert Lumens per Steradian to Hefnerkerze
Enter a value in lumens per steradian (lm/sr) to convert to hefnerkerze (HK).
Lumen per Steradian to Hefnerkerze Conversion Table
Table showing various lumen per steradian measurements converted to hefnerkerze. Click any preset value or arrow to load it into the converter.
| Lumens per Steradian (lm/sr) | Hefnerkerze (HK) |
|---|---|
| 1 lm/sr | 1.1074197 HK |
| 2 lm/sr | 2.2148394 HK |
| 2.5 lm/sr | 2.7685493 HK |
| 5 lm/sr | 5.5370986 HK |
| 10 lm/sr | 11.0741971 HK |
| 15 lm/sr | 16.6112957 HK |
| 20 lm/sr | 22.1483942 HK |
| 25 lm/sr | 27.6854928 HK |
| 30 lm/sr | 33.2225914 HK |
| 50 lm/sr | 55.3709856 HK |
How to Convert Lumens per Steradian to Hefnerkerze
To convert lumens per steradian to hefnerkerze, multiply the luminous intensity by the following conversion ratio: 1.1074197 hefnerkerze/lumen per steradian.
Since one lumen per steradian is equal to 1.1074197 hefnerkerze, you can use this simple formula to convert:
The luminous intensity in hefnerkerze is equal to the luminous intensity in lumens per steradian multiplied by 1.1074197.
For example, here's how to convert 5 lumens per steradian to hefnerkerze using the formula above.
How Many Hefnerkerze Are in a Lumen per Steradian?
There are 1.1074197 hefnerkerze in a lumen per steradian, which is why we use this value in the formula above.
Our lumen per steradian to hefnerkerze calculator automatically converts your luminous intensity measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Lumens per Steradian and hefnerkerze are both units used to measure luminous intensity. Keep reading to learn more about each unit.
What Is a Lumen per Steradian?
A lumen per steradian is a unit of luminous intensity equal to 1 candelas (cd), the base unit for luminous intensity. Exact SI definition of 1 candela (1 lm/sr = 1 cd). [1]
The lumen per steradian is classified as an International System of Units (SI) unit of luminous intensity. Lumens per Steradian can be abbreviated as lm/sr; for example, 1 lumen per steradian can be written as 1 lm/sr.
When working with lumens per steradian (lm/sr) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, lumens per steradian (lm/sr) are widely used across standard luminous intensity applications within International System of Units (SI) workflows, engineering documentation, and technical data sheets.
What Is a Hefnerkerze?
A hefnerkerze is a unit of luminous intensity equal to 0.903 candelas (cd), the base unit for luminous intensity. Historical German photometric candle standard (≈ 0.903 cd). [2]
The hefnerkerze is classified as a standard unit of luminous intensity. Hefnerkerze can be abbreviated as HK; for example, 1 hefnerkerze can be written as 1 HK.
When working with hefnerkerze (HK) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, hefnerkerze (HK) are widely used across standard luminous intensity applications within international standard workflows, engineering documentation, and technical data sheets.
When converting luminous intensity between lumens per steradian (lm/sr) and hefnerkerze (HK), keep full floating-point precision (1 lm/sr = 1.1074197 HK; 1 HK = 0.903 lm/sr) during intermediate calculations and round only the final hefnerkerze figure to match your instrument tolerance.
More Lumen per Steradian & Hefnerkerze Conversions
Need to calculate in the opposite direction? Use our hefnerkerze to lumens per steradian calculator to switch your starting unit immediately. You can also explore related tools such as converting hefnerkerze to lumens per steradian, converting lumens per steradian to candelas, or converting candelas to millicandelas.
Convert from Lumens per Steradian
Convert to Hefnerkerze
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Length)·Luminous Intensity Metrology Standard — Lumens per Steradian (lm/sr) to Hefnerkerze (HK)
- [2]BIPM SpecificationBIPM (SI Base Unit: Metre (m))·Unit Specifications: Lumen per Steradian (lm/sr) & Hefnerkerze (HK)
- [3]NIST HB 133 ReferenceNIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (lm/sr to HK)