Candela to Lumen Calculator
Convert luminous intensity (candela) to luminous flux (lumens) with our precise calculator tool
Input Parameters
Conversion Results
Total Luminous Flux
Lumens (lm)
Calculation Formula
Where:
Φv = Luminous flux in lumens (lm)
Iv = Luminous intensity in candela (cd)
θ = Beam angle in degrees
η = Efficiency factor (decimal)
Candela to Lumen Calculator – Convert Light Intensity the Easy Way
Understanding light measurement can be confusing—especially when switching between candela and lumens. That’s where our Candela to Lumen Calculator comes in handy. Whether you’re comparing flashlight specs, choosing headlight brightness, or understanding lighting for your home or office, this tool makes conversions accurate and effortless.
Try this tool also: Lumens to Lux calculator
What Is a Candela to Lumen Calculator?
The Candela to Lumen Calculator is a simple online tool that helps you convert candela (cd)—a unit of luminous intensity—into lumens (lm), which measure total light output.
The basic formula used is:
- Lumens = Candela × Solid Angle (in steradians)
For example, if light spreads uniformly over a solid angle of 1 steradian, then 1 candela equals 1 lumen.
This tool is helpful for lighting professionals, engineers, or anyone wanting to compare the power and reach of light sources accurately.
How Many Lumens Is a Candela?
This is one of the most common questions. The conversion depends on the beam angle or solid angle:
- 1 candela = 1 lumen per steradian
A narrower beam angle will give fewer lumens from the same candela rating, while a wider angle gives more lumens.
Related Queries:
- How bright is 10 candela?
- Is 100,000 candela good?
- How many candlepower is 10,000 lumens?
- What does 1 candela look like?
- What is the ratio of lumens to candelas?
- How bright is 3,000 lumens?
- What is 1 lumen equal to?
- How bright is 1 million candela?
- How many candelas is a headlight?
- Is a candela a luminous intensity?
- What’s better, candela or lumens?
- How to convert lux to lumens?
How to Convert Candela to Lumen?
To convert candela to lumens, you need the beam angle or the solid angle in steradians. Our calculator simplifies this for you:
Just input:
- Candela value
- Beam angle (optional)
You’ll get:
- Approximate Lumens output
Related Queries:
- How bright is 10 candela?
- How bright is 1 million candela?
- What is the ratio of lumens to candelas?
- How bright is 3,000 lumens?
- How to convert lux to lumens?
- How many candelas is a headlight?
- How many candlepower is a lumen?
- What does CD=1000LM mean?
- How many candelas is 1000 lumens?
- How is lumen calculated?
- Are candela and lumen the same?
- What is 1400 lumens in watts?
What Is 1 Candela Equal To?
1 candela is the luminous intensity in a given direction of a source that emits monochromatic radiation of frequency 540 THz and has a radiant intensity of 1/683 watt per steradian.
In simple terms: 1 candela ≈ 12.57 lumens if the light spreads in all directions (4π steradians).
Related Queries:
- What is 1 lumen equal to?
- What does 1 candela look like?
- How to convert lux to lumens?
- How many candelas is a headlight?
- How many lumens in a 100-watt bulb?
- How bright is 1 million candela?
- How many lumens in a candela?
- How bright is a 20 lumen light bulb?
- How many candelas is a lumen?
- How to convert lumens to candela?
- What is 1400 lumens in watts?
- Is a candela a luminous intensity?
How Does Candela Compare to Lumens?
While both measure light, they describe different aspects:
- Candela: Intensity in a single direction (like a laser pointer).
- Lumens: Total light emitted in all directions (like a light bulb).
Related Queries:
- Is 5000 candelas good?
- What is the difference between high candela and high lumens?
- Is 10,000 candela good?
- How to convert lux to lumens?
- How bright is 1 million candela?
- How many candelas is a headlight?
- What is 1 lumen equal to?
- What is a good candela per square meter?
- Can you convert lumens to candela?
- How bright is a 20 lumen light bulb?
- How many lumens is a 100-watt bulb?
- What is the intensity of 4 candela?
Why This Tool Matters
With thousands of lighting products using different measurements, it’s crucial to know what you’re buying or working with. Our Candela to Lumen Calculator eliminates the guesswork and lets you:
- Compare flashlight power accurately
- Choose headlights with the right beam intensity
- Understand manufacturer labels like “5000 cd” or “1000 lm”
- Convert between different lighting units quickly
Try It Now!
- Use our Candela to Lumen Calculator to:
- Convert candela to lumens with or without beam angle
- Understand lighting specs
- Make smart choices for lighting design, shopping, or testing
FAQs
Q: Is candela better than lumens?
Not better—just different. Candela shows intensity; lumens show total output.
Q: Can I convert lumens back to candela?
Yes, if you know the solid angle. Use the formula: Candela = Lumens / Steradian
Q: Why do flashlights use candela?
Because it describes how focused and far-reaching the beam is.
Conclusion
Understanding light measurements shouldn’t be hard. With our Candela to Lumen Calculator, you get accurate results with ease. Whether you’re a lighting geek or a curious shopper, this tool gives you control and clarity over your lighting choices.