Lumens to Candela Calculator

Enter Lumens (lm): Enter Beam Angle (°):

💡 Formula: Candela = Lumens / (2π × (1 - cos(θ/2)))

Lumens to Candela Calculator – Convert Luminous Flux to Intensity Easily

If you’ve ever tried comparing light output in lumens, candela, or even lux, you might have felt like you were navigating a maze of confusing units. But don’t worry—our Lumens to Candela Calculator is designed to eliminate the guesswork. Whether you’re working with LED lights, designing a lighting system, or simply curious about how bright 1000 lumens really is, this guide explains everything in clear, practical terms.

Try this tool: Candela to lumens calculator

What Is the Difference Between Lumens, Candela, and Lux?

Understanding the relationship between lumens, candela, and lux is essential for accurately measuring and comparing light.

Lumens (lm) measure total visible light emitted by a source. It’s the most commonly used term to express brightness.
Candela (cd) measures the intensity of light in a specific direction. It considers how focused the beam is.
Lux (lx) measures illuminance, or how much light falls on a surface (lumens per square meter).

In short:

Lumens = total light
Candela = intensity of that light in a direction
Lux = how much light lands on a surface

How Do You Convert Lumens to Candela?

The conversion between lumens and candela depends on the beam angle. A narrower beam results in a higher candela value, even if the lumen output is the same.

Formula:

Candela (cd) = Lumens (lm) / [2π × (1 – cos(θ / 2))]

Where θ is the beam angle in degrees.

Our calculator does this for you instantly—just enter the lumens and beam angle.

FAQs related to this:

How many lumens is a candela?
How many candela is a headlight?
How is candela calculated?
How many nits are in a lumen?
How do you convert lumens to lux?
What is the conversion from lumen to lux?

All these are answered in our calculator and guide.

How Many Candela Is 1000 Lumens?

This is one of the most searched questions online.

Answer: It depends on the beam angle.

At a 10° beam angle, 1000 lumens ≈ 65,920 candela
At a 60° beam angle, 1000 lumens ≈ 1,091 candela
At a 120° beam angle, 1000 lumens ≈ 286 candela

Use our calculator to get an exact number for your beam angle.

Also Asked:

Is lumen equal to candela?
What is 1000 lumens equivalent to?
Is 1000 lumens very bright?
How bright is 1 million candela?
How much is 1000 lumens of light?
What is 1 candela?

How Bright Is 3000 Lumens?

3000 lumens is considered very bright, suitable for large rooms, garage lighting, or outdoor floodlights.

Real-world applications:

3000 lumens is too bright for a bedroom.
It may be too bright for headlights, depending on the beam focus.
A 5000-lumen projector is ideal for well-lit rooms.
A car headlight usually ranges between 1200 to 3000 lumens.

Is 5000 Lux the Same as 5000 Lumens?

No, they are not the same.

5000 lumens is the total light emitted.
5000 lux means 5000 lumens per square meter.

Example:

A 5000-lumen bulb over 1 square meter = 5000 lux.
That same bulb over 10 square meters = 500 lux.

Frequently asked:

How many lux is 2000 lumens?
How far will 5000 lumens shine?
Is 15000 lux too bright?
Is 6000 lumens bright enough?
Does 1 lux equal 1 lumen?
Which is brighter: lux or lumens?

How Bright Is 100000 Lumens?

This is extremely bright—enough for stadium lighting or searchlights. For comparison:

1 million candela is what you’d expect from professional-grade spotlights.
100,000 lumens can light up entire fields or outdoor venues.

Common related searches:

Is 100000 lumens too bright?
How far will 100000 lumens shine?
Is 5000 lumens too bright for indoors?
How many lumens is a car headlight?
How bright is the sun in lumens?

Convert Candela to Lumens

While this tool focuses on lumens to candela, you can reverse the formula too:

Lumens (lm) = Candela (cd) × [2π × (1 – cos(θ / 2))]

We plan to add this feature in future updates.

Why Use Our Lumens to Candela Calculator?

Instant, accurate conversion
Responsive on all devices
Designed for engineers, lighting designers, and students
No guesswork—just plug and play

It answers all user queries such as:

How many candela is a 1000 lumen spotlight?
How do you convert to nits?
Is 1400 lumens in watts equal to a 100W bulb?
Does candela compare to watts or lux?

Final Thoughts: Choosing the Right Light for Your Needs

When selecting lighting for your home, car, workspace, or outdoor areas, understanding these units is critical. Whether you’re comparing LED bulbs, projector lights, or headlights, converting lumens to candela helps you understand not just how much light, but where and how intensely that light shines.

Use our Lumens to Candela Calculator to simplify your decisions. Bookmark it, share it, and let it light the way for your next project.