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Candles (international) to Lumens/steradian Converter (candle (int) to lm/sr)

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Live Conversion • BIPM SI Brochure (9th Edition) Certified
1 Candle (international) = 1.019 Lumen/steradian
1 candle (int) = 1.019 lm/sr • 1 lm/sr = 0.981354 candle (int)
Candle (international) to Lumen/steradian: One Candle (international) is equal to 1.019 Lumens/steradian.
Certified Authority Value
1.01900000
lm/sr
Exact: 1 lm/sr ≡ 0.9813542689 candle (int)
candle (int)
candle (int)
Swap to Lumen/steradian to Candle (international)
Swap to Lumen/steradian to Candle (international)
lm/sr
lm/sr 1.019
Quick Values:
Conversion Formula
To convert Candle (international) to Lumen/steradian, multiply by 1.019
candle (int) × 1.019 = lm/sr

Calculation: 1 candle (int) × 1.019 = 1.019 lm/sr

Common Candle (international) to Lumen/steradian Calculations

Quick-lookup reference table showing calculated equivalents for standard increments between Candle (international) (candle (int)) and Lumen/steradian (lm/sr).

Tap any row to calculate
Candle (international) to Lumen/steradian: Primary Direct Table (15 Steps)
Candle (international) to Lumen/steradian Conversion Reference Table
Conversion & Equivalent Value Scientific Notation
0.001 candle (int) 0.001019 lm/sr 1.019 × 10⁻³
0.01 candle (int) 0.01019 lm/sr 1.019 × 10⁻²
0.1 candle (int) 0.1019 lm/sr 1.019 × 10⁻¹
0.5 candle (int) 0.5095 lm/sr 5.095 × 10⁻¹
1 candle (int) 1.019 lm/sr 1.019 × 10⁰
2 candle (int) 2.038 lm/sr 2.038 × 10⁰
5 candle (int) 5.095 lm/sr 5.095 × 10⁰
10 candle (int) 10.19 lm/sr 1.019 × 10¹
20 candle (int) 20.38 lm/sr 2.038 × 10¹
25 candle (int) 25.475 lm/sr 2.548 × 10¹
50 candle (int) 50.95 lm/sr 5.095 × 10¹
100 candle (int) 101.9 lm/sr 1.019 × 10²
250 candle (int) 254.75 lm/sr 2.548 × 10²
500 candle (int) 509.5 lm/sr 5.095 × 10²
1000 candle (int) 1019 lm/sr 1.019 × 10³
Lumen/steradian to Candle (international): Reciprocal Summary
Lumen/steradian to Candle (international) Conversion Reference Table
Reciprocal & Equivalent Value Scientific Notation
1 lm/sr 0.981354 candle (int) 9.814 × 10⁻¹
5 lm/sr 4.906771 candle (int) 4.907 × 10⁰
10 lm/sr 9.813543 candle (int) 9.814 × 10⁰
50 lm/sr 49.067713 candle (int) 4.907 × 10¹
100 lm/sr 98.135427 candle (int) 9.814 × 10¹
View Complete 15-Row Lumen/steradian to Candle (international) Table

Real-World Context & Everyday Benchmarks

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To help contextualize these units in everyday life, science, and engineering, here are verified real-world reference points for Candle (international) (candle (int)) and Lumen/steradian (lm/sr):

Candle (international) References:

  • Standard common utility household wax candle flame intensity 0.981354 candle (int)
  • Standard 100-watt domestic incandescent light bulb intensity 117.76 candle (int)
  • High-power outdoor search and rescue LED flashlight beam 981.35 candle (int)
  • Automotive vehicle high-beam headlight beam luminous intensity 24533.86 candle (int)

Lumen/steradian References:

  • Standard common utility household wax candle flame intensity 1 lm/sr
  • Standard 100-watt domestic incandescent light bulb intensity 120 lm/sr
  • High-power outdoor search and rescue LED flashlight beam 1000 lm/sr
  • Automotive vehicle high-beam headlight beam luminous intensity 25000 lm/sr

Tap any benchmark above to automatically calculate its exact equivalent in Lumen/steradian.

ISQ Dimension: [J] Coherent SI Unit: candela (cd) Photometry, Radiometry, Optics & Acoustics

How to Convert Candle (international) to Lumen/steradian

Converting Candle (international) (candle (int)) to Lumen/steradian (lm/sr) is a core calculation in Luminous Intensity, which measures the wavelength-weighted photometric power emitted by a light source in a direction per unit solid angle. Because Candle (international) represents a larger magnitude than Lumen/steradian, converting from candle (int) to lm/sr expands the numerical figure. Exactly 1 Candle (international) encompasses 1.019 Lumen/steradian. To convert any quantity, multiply the value in Candle (international) by 1.019.

Direct Factor1 candle (int) = 1.019 lm/sr
Inverse Ratio1 lm/sr = 0.981354 candle (int)
Conversion ScaleDirect Proportional Magnitude Expansion
First-Principles SI Derivation ProofNIST SP 811 / ISO 80000 Compliance

Mathematical Conversion Derivation via Coherent SI Base Unit

Under the International System of Quantities (ISQ), dimensional conversion between non-SI units is rigorously resolved by bridging through the coherent SI base unit (candela (cd)) without arbitrary rounding:

Vtarget=Vsource×(ksource→SIktarget→SI)V_{\text{target}} = V_{\text{source}} \times \left( \frac{k_{\text{source} \to \text{SI}}}{k_{\text{target} \to \text{SI}}} \right)
Universal Dimensional Conversion Law (ISO 80000 / NIST SP 811)
1. Source SI Bridge (ksource):1 candle (int) = 1.019 candela (cd)
2. Target SI Bridge (ktarget):1 lm/sr = 1 candela (cd)
Step-by-step substitution for Candle (international) → Lumen/steradian:V(lm/sr) = V(candle (int)) × ( 1.019 / 1 ) = V(candle (int)) × 1.019
Mathematical FormulaValue in Lumen/steradian = Value in Candle (international) × 1.019Direct computational formula applied for standard conversion.
Worked Example

For an engineering input of 250 candle (int), applying the conversion factor yields exactly 254.75 lm/sr. At larger operational scale, 240 Candle (international) corresponds to 244.56 lm/sr.

Inverse check: 1 lm/sr = 0.981354 candle (int).

Understanding Candle (international) and Lumen/steradian

Candle (international)

candle (int)
Standard Unit

A Candle (international) (candle (int)) is a recognized unit for luminous intensity.

Applications & Practical Context

In practical luminous intensity terms, a standard common utility household wax candle flame intensity equals 0.981354 candle (int), a standard 100-watt domestic incandescent light bulb intensity equals 117.76 candle (int), a high-power outdoor search and rescue LED flashlight beam equals 981.35 candle (int).

Physical Setup

A physical magnitude of 1 candle (int) corresponds to 1.019 cd in standard SI measurement.

Conversion to SI Unit: candela (cd)
1 candle (int) = 1.019 cd

Lumen/steradian

lm/sr
Standard Unit

A Lumen/steradian (lm/sr) is a recognized unit for luminous intensity.

Applications & Practical Context

In practical luminous intensity terms, a standard common utility household wax candle flame intensity equals 1 lm/sr, a standard 100-watt domestic incandescent light bulb intensity equals 120 lm/sr, a high-power outdoor search and rescue LED flashlight beam equals 1000 lm/sr.

Physical Setup

A luminous intensity of 1 lm/sr represents the monochromatic light power emitted into a 1-steradian solid cone.

Conversion to SI Unit: candela (cd)
1 lm/sr = 1 cd

Domain Metrology & Engineering Applications

Governing Law & Equation

Base SI Photometric Standard (540 × 10¹² Hz monochromatic radiation, K_cd ≡ 683 lm/W)

Measurement Instrumentation

Rigorously quantified in laboratory and field settings using goniophotometers, integrating sphere spectroradiometers, and calibrated photodiode luminance meters.

Primary Industry Sectors

Applied across automotive headlamp certification (ECE/SAE), architectural LED design, lighthouse beacons, and airport runway lighting under international metrology standard BIPM SI Brochure (9th Edition), CIE 018:2019.

Institutional Metrology & Standard Authority:

Formulas, conversion coefficients, and base definitions on this page strictly adhere to the BIPM SI Brochure (9th Edition), CIE 018:2019. Governed by Base SI Photometric Standard (540 × 10¹² Hz monochromatic radiation, K_cd ≡ 683 lm/W) under ISO 80000 dimensional vector [J].

Multi-Variable Engineering Bridge Photometry & Solid Angle Radiation

Luminous Intensity to Total Luminous Flux Bridge (Lumens • Millilumens • Kilolumens • MSCP)

Calculate total emitted luminous flux Φ = I_v × Ω across emission solid angles, bridging luminous intensity [J] and luminous flux [J] via solid angle (Ω).

Φ = I_v × Ω
Vector: [cd] × [sr] → [lm]
Live Calculated Bridge Equivalent:
1 candle (int) at Full Isotropic Sphere (4π sr) = 12.8051 lm
Equals 12805.13 mlm • 0.01281 klm • 1.019 MSCP
SI Luminous Flux
12.8051
lm
Lumens
Fiber Optics
12805.13
mlm
Millilumens
Commercial Floodlight
0.01281
klm
Kilolumens
Lamp Rating
1.019
MSCP
Mean Spherical Candlepower
English Standard
1.019
cp-flux
Candlepower Flux
Stadium Array
1.280513 × 10⁻⁵
Mlm
Megalumens
  1. 1. Normalize Input to SI Base Unit (cd):
    I_v = 1 candle (int) × 1.019 = 1.019 cd
  2. 2. Apply Engineering Parameter (Ω):
    Selected condition: Full Isotropic Sphere (4π sr) at Ω = 12.5664 sr
  3. 3. Execute Governing Physical Law in SI Units:
    Φ = I_v × Ω = (1.019 cd) × (12.5664 sr) = 12.805132 lm
  4. 4. Convert to Standard Engineering Units:
    • lm: 12.805132 × 1 = 12.8051 lm (Lumens) • mlm: 12.805132 × 1000 = 12805.13 mlm (Millilumens) • klm: 12.805132 × 0.001 = 0.01281 klm (Kilolumens) • MSCP: 12.805132 × 0.07958 = 1.019 MSCP (Mean Spherical Candlepower) • cp-flux: 12.805132 × 0.07958 = 1.019 cp-flux (Candlepower Flux) • Mlm: 12.805132 × 1 × 10⁻⁶ = 1.280513 × 10⁻⁵ Mlm (Megalumens)
Explore Illuminance Converter →
Engineering Substance / Operating Standard Parameter Value (sr) Reference State / Condition Typical Industrial & Engineering Application
Full Isotropic Sphere (4π sr) 12.5664 4π ≈ 12.5664 sr Uniform 360° omnidirectional point emitter (12.566 sr)
Hemispherical Lambertian Surface (π sr) 3.1416 π ≈ 3.14159 sr Ideal diffuse flat LED / OLED planar emitter
60° Floodlight Beam Cone (0.842 sr) 0.8418 2π(1 - cos 30°) sr Commercial architectural recessed floodlight cone
30° Narrow Spotlight Cone (0.214 sr) 0.2141 2π(1 - cos 15°) sr Track lighting & directional accent spotlight cone
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Frequently Asked Questions

There are exactly 1.019 lumens/steradian (lm/sr) in 1 candle (international) (candle (int)). To calculate larger amounts manually, simply multiply your total number of candles (international) by the conversion multiplier of 1.019.

The mathematical formula to convert candles (international) to lumens/steradian is: [value] * 1.019 = lumens/steradian. Rather than doing the math manually, you can use our high-precision online calculator to process this exact equation instantly without rounding errors.

To perform the reverse calculation from lumens/steradian back to candles (international), you must divide your starting value by 1.019. Our bidirectional tool automatically computes this inverse equation the moment you type into the lumen/steradian input field.

1 Candle (international) is larger than 1 Lumen/steradian. Specifically, 1 Candle (international) equals exactly 1.019 lumens/steradian, making it 1.019 times larger (a difference of 0.01 orders of magnitude). Therefore, quantities expressed in lumens/steradian require a larger numerical value to represent the same physical amount.

Under standard international measurement guidelines, 1 Candle (international) converts to 1.019 lumens/steradian. Precise numerical conversion factors ensure consistency across laboratory, engineering, and field data.

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