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5 DIY UV Lights You Can Make at Home!

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a uv light flashlight

There are all sorts of reasons that you might want a UV light in your home. Perhaps you just want a blacklight to see what’s around you, or maybe you want UV light so you can sterilize different objects.

No matter what you are looking for, there is a DIY project here that can get it done. Even better, with all these ideas, you won’t need to spend much money on an expensive UV light sterilizer if you don’t want to.

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The 5 DIY UV Lights You Can Make 

1. Turn Your LED Flashlight Into a UV Light

DIY UV light
Image Credit: Instructables
Materials: Led flashlight, cellophane, and a rubber band
Tools: None
Difficulty Level: Easy

This easy DIY LED flashlight conversion is a typical DIY UV light. It’s also an extremely easy conversion kit, and it works with any light that you already have!

Even better, you don’t need any advanced tools — all you need is cellophane and a rubber band to turn any light into a UV light.

2. Turn Your Cellphone Into a UV Light

DIY UV light
Image Credit: Osc
Materials: Smartphone, clear tape, blue Sharpie, purple Sharpie, white paper, and a yellow highlighter
Tools: None
Difficulty Level: Easy

Just about everyone has a smartphone, so a DIY plan that turns a smartphone into a UV light is great. While you’ll have to repeat these steps anytime that you want to use it as a UV light, it’s better than drawing right on the phone and losing regular flashlight features.

This DIY project is extremely easy to complete, and if you have Sharpies at home, there’s a good chance that you have everything else that you need.

3. Turn Any Flashlight Into a UV Light

Materials: Flashlight and rubbing alcohol
Tools: None
Difficulty Level: Easy

If you want an easy method to turn any flashlight into a UV light, this is it. All you need is a flashlight and rubbing alcohol, and you can easily get all the UV light that you want.

It’s not the most effective method compared to some other options on this list, but there’s no denying that it’s one of the easiest.

4. Make a UV Sterilization Box

Materials: Cardboard or wooden box, tape, magnets, iron strip, aluminum foil, UV tubes, and a circuit board
Tools: Scissors, screwdriver, and wire splicer
Difficulty Level: Challenging

This isn’t a typical “UV” light, and it’s also a complex DIY option. But if you’re looking for a UV light to sterilize something, like a mask, it’s the route that you need to take.

This is a DIY UV sterilization box that you can use for small objects, and it does a great job. That said, it’s complicated to make, and you’ll have to spend more on supplies compared to the other options on this list.

5. Make the Lowest Cost UV Filter

Materials: Transparent sheet, red and blue permanent markers, and scotch bands
Tools: Scissors
Difficulty Level: Easy

This DIY UV filter probably won’t cost you a dime because there’s a good chance that you already have everything that you need.

Equally as great, it’s not hard to make, so even if you aren’t that creative or artistic, you should be able to easily complete this project.

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Is a UV Light and a Black Light the Same Thing?

When you start looking for UV lights, there’s a good chance that you’ll run across quite a few black lights. The reason for this is that a black light is a type of UV light.

More specifically, it’s a UVA light, which indicates what part of the UV spectrum that it’s on. It’s part of the UV spectrum, but you can’t use it to sterilize things like you can with UVB or UVC lights.

However, unlike with those wavelengths, you don’t have to worry about UVA from a black light shining on you!

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Now that you have great ideas of how to build your own UV light, all that’s left is for you to decide which one is your favorite and to make it!

Since so many of these plans only require materials that you likely already have lying around the house, it’s not like you have to spend much money to try them out and see which one is your favorite!

Featured Image Credit: Freedom Master, Shutterstock

About the Author Robert Sparks

Robert’s obsession with all things optical started early in life, when his optician father would bring home prototypes for Robert to play with. Nowadays, Robert is dedicated to helping others find the right optics for their needs. His hobbies include astronomy, astrophysics, and model building. Originally from Newark, NJ, he resides in Santa Fe, New Mexico, where the nighttime skies are filled with glittering stars.