Lux Lumen Watt and Kelvin Explained
It’s easy to get muddled up between lux and lumens, or kelvin and watt, and you might be wondering which one really counts. No worries, we’re here to break it down for you. Once you’ve got the lowdown, you’ll see it’s not as tricky as it might seem!
Luminous Flux, Lumens, and What They Mean
To really get the difference between lux and lumen, you first need to know what a lumen is. Essentially, a lumen measures the total amount of visible light a light produces—it tells you just how bright the lamp is.
Back in the day, when you were dealing with incandescent and halogen bulbs, people often worked out lumen output but mostly talked in terms of power (Watt). With LED lighting, though, the lumen-to-watt ratio isn’t the same, so you can’t use watts alone to gauge how effective a light is. Down below, you’ll find a practical comparison of brightness in lumens that clears things up.
| Luminous flux | LED light | Bulb | Halogen light |
| 300 Lumens | 3W | 25-30W | 35W |
| 600 Lumens | 6W | 60W | 42W |
| 1300 Lumens | 13-20W | 100W | 70W |
| 2100 Lumens | 150W |
In addition to the number of lumens, there are other important factors to consider, such as the colour temperature of the light, even light distribution, compliance with safety standards, lifespan, resistance to weather conditions, energy efficiency, ease of installation and adjustment. CRAWER LED Lights meet and exceed all these criteria, offering excellent road illumination and ensuring safe usage. Curious to see how our CRAWER LED tractor lights look? Have a squiz on our Instagram!
Light Intensity, Lumen, and Watt – What’s the Difference?
Nowadays, wattage isn’t the go-to measure for how effective a light really is. What matters is the difference between lux and lumens. Watt mainly tells you whether a particular bulb or light will work with your vehicle – they indicate how much power the light needs to run, essentially how much energy it uses. But if you’re after visibility, it’s the lumens you need to focus on.
Light pattern of the CRAWER HALOS Series LED Spotlights CR-1050, CR-1051 and CR-1052
The graphic shows the distribution of light intensity (in lux) for different light sources. The horizontal axis (X) is distance, the vertical axis (Y) is height, and the colours represent different levels of brightness from lightest (green) to darkest (dark orange).
The Colour Temperature Is Measured in Kelvin
When choosing the right LED light, you’ll often notice that the colour temperature is given in Kelvin – this tells you about the light temperature in the colours. For instance, 1200K mimics candlelight (a warm, red-orange glow), while 10,000K corresponds to bright sunlight. Most of our CRAWER LED Work Lights are around 6000K, which is equivalent to daylight, also known as “cool” or “cool white”. It is an ideal colour for outdoor work, as it provides a clear view of everything, illuminating the work area perfectly.
The Difference Between Lux and Lumen
Lux and lumen are units that measure different aspects of light. Lumen (lm) is the total amount of light emitted by a light source. Lumens essentially indicate how bright it is overall. Lux (lx), on the other hand, measures how much light falls on a specific area. For example, if a light emits 1000 lumens, it will deliver 1000 lux over an area of 1m². But if those same 1000 lumens are spread over 10m², the intensity drops to just 100 lux. It’s also important to note that the mounting height of the lamp plays a important role – the higher it is, the more evenly the light is distributed.
Lux measurements are commonly used to measure lighting in rooms, sheds and stables.
The Difference Between Lux and Lumen – Now You Know
Now you’re clued up on the differences between lux and lumen, as well as Kelvin and Watt. When it comes to the total amount of light, you should focus on the lumen count. Lux tells you about the light intensity per square metre. Watts, meanwhile, are used simply to check if a bulb fits your tractor model by indicating the power needed for it to run, and Kelvin is all about determining the light’s colour temperature.
Not too tricky, right? If you’ve still got any questions about the differences between Lux, Lumen, Watt, and Kelvin, don’t hesitate to get in touch with our customer service team. We have the knowledge and are more than happy to help!
Innovation from CRAWER
CRAWER continues to impress with their commitment to innovation. At Wattz, we appreciate their dedication to quality and progress. Each new model they release shows that they not only embrace the latest technologies but also actively listen to user needs—especially farmers. From enhanced water resistance to interference-free performance, CRAWER continually reinvents itself, making them a trusted partner for us and our customers.
