How to find out headlight bulb size on car

Vlada February 02 2022


Your headlights might seem like a small and unimportant part of your vehicle, but they actually play a very important role. Headlights are what allow you to see the road in front of you at night or in poor weather conditions, and they help other drivers see your vehicle so that they can avoid running into you. 

This is why it's so important to make sure that your headlights are always in good working condition. But what should you do if the bulbs in your headlights have burned out and you do not know how to find a replacement? Not a problem, because we are ready to help you in this! Keep reading and you will learn how to determine your headlight bulb size. 

How to find out what headlight bulb you need?

The market for car lights today is very broad and diverse. You can enhance your headlights in any way your imagination desires. But this has its own drawback - a person who does not know much about cars will be shocked by such a variety because not every product will suit you. If you are faced with the problem of choosing headlight bulbs, we have two solutions - you can apply to a qualified mechanic - who will be happy to advise you, will help you choose a headlight bulb, and answer all your questions. However, if you don't want to go to someone for help - you can delve into the matter yourself. Below we have listed a list of factors that you need to pay attention to when choosing a headlight bulb. 

There are a few things you need to take into account when choosing the right headlight bulbs for your car. First, you need to know what type of bulb is compatible with your car. Second, you need to consider the brightness and output of the bulbs. Finally, you need to decide on the headlight bulb size that you need.

What are the different types of car bulbs?

LED bulbs


LED bulbs are brighter and last longer than the old lights. They have diodes inside that make light when you turn them on. These lights use less energy and last longer than the old bulbs. The light is like an intense beam, it is even warmer than normal bulbs which can be 150-300% brighter.

LED bulbs can be more expensive than other types of car bulbs, but they last a long time and are worth the investment. LED bulbs can last up to 10 years.

However, it is currently illegal to install LED bulbs in most cars. The reason is that there is no legislation yet that allows LED lights to be used as a replacement for the typical halogen lights you find in most vehicles.

LED bulbs are perfectly legal for both interior and off-road use.

Halogen bulbs


Halogen bulbs are a type of light bulb that get hot and create light when electricity runs through them. They can be filled with gas to prevent them from changing colors.

Most cars come fitted with these because they are cheaper to make than other types of light bulbs and can be replaced by the buyer themselves in just a few minutes, or by our expert service for those that need it.

Halogen light bulbs are tested and road legal. You’ll also find that Halogen light bulbs are cheaper than LED lights or Xenon bulbs. Longer-life Halogen Bulbs are available and can provide a 25%, 50% or 3x improvement in operating life for a small cost increase per bulb. If you want brighter lights, our Halfords Advanced range delivers up to 150% more light from the same size.

Xenon bulbs


Xenon HID lights are stronger than Halogen or LED lights. They use electricity to fill the inside with gas and then give off a brighter light than the Halogen bulbs. The Xenon HID lights are more expensive, but they can produce 300-450% more light than a normal halogen bulb for your car.

They also come in lots of different colors! Xenon HID lights are not as simple as just replacing a bulb when it breaks; you need to make sure you have enough space in your car for them because they will not fit in any other type of car if they were not made for it by the manufacturer like LED headlights which only work on cars where the manufacturer put them there originally.

How bright should be your headlight bulbs?


The amount of light emitted by a headlight is measured in lumens. The brighter the headlight, the more lumens it emits. You need to know how many lumens your headlights need to be effective.

Your car's headlights should have at least 1,000 lumens each. If you live in an area with lots of streetlights, you may be able to get away with fewer lumens. But if you live in a rural area or somewhere with little light pollution, you'll need more lumens to see clearly.

To find out how many lumens your headlights need, start by looking at your car's owner's manual. It should list the minimum lumen output for your headlights. You can also check with your car's manufacturer to find out the minimum lumen output for your car.

How to determine your headlight bulb size?

There are a few different ways that you can determine your headlight bulb size. One way is to consult your car's owner manual. Another way is to look for the size information on the existing headlight bulb itself. You can also measure the diameter and length of the headlight housing to get a general idea of the size bulb you need.

What is the color temperature of headlight bulbs and why does it matter?


The color temperature is a way to describe the hue of light. It is often described as "warm" or "cool" light. Warm light has a yellow-orange hue, while cool light has a blue-ish hue. The lower the color temperature, the warmer the light (think of firelight); the higher the color temperature, the cooler the light (think of sunlight on a winter day). color temperature is measured in Kelvin (K), and typically ranges from 1,000-10,000K.

Light with a color temperature below 3,000K is generally considered "warm" while light with a color temperature above 4,000K is considered "cool." However, there is no hard and fast rule about what is considered "warm" or "cool" light. Some people may prefer the warmer hues of 2,700K light, while others may prefer the cooler hues of 6,500K light. Ultimately, it comes down to personal preference.

What color light is best for headlights?

There is no definitive answer to this question as different drivers have different preferences. Some people prefer white light for their headlights, as it offers good visibility and does not cause eye fatigue. Others prefer yellow or amber light, as it is easier on the eyes and does not produce glare. Ultimately, it is up to the driver to decide what color light is best for their headlights.

What car bulb should I buy?

You will need to make a decision about what matters to you. You might want an expensive bulb that lasts a long time, or you might want one that is really bright. A cheaper one may not last as long as the expensive one. If you need to find a replacement car bulb, the easiest way to find the bulb size for your car on

You can also buy LED bulbs which are efficient and effective but they are currently not legal so you might break the law.