Choosing the CORRECT welding lens shade is just as important as wearing the helmet itself. The right shade protects your eyes from the intense visible light produced by the welding arc while still letting you clearly see the weld puddle, joint, and surrounding workpiece.
The ideal shade depends on several factors, including the welding process, amperage, arc brightness, and whether you’re welding or cutting. That’s why there isn’t a single shade number that’s suitable for every job.
In this guide, I’ll explain how to choose the right lens shade for your welding helmet, walk you through the recommended shade ranges for different welding applications, and show you how to use my Welding Lens Shade Chart and Lens Shade Calculator, both based on OSHA, ANSI, and AWS recommendations, to quickly find the protection you need.
Lens Shade Calculator For Welding Helmets
One thing I’ve noticed over the years is that choosing the right lens shade for a welding helmet is one of the biggest challenges for new welders. Whenever apprentices joined my workshop, they were constantly asking which shade they should use for a particular welding process or amperage.
After answering the same question countless times, Oliver Freling, my workshop manager, and I decided to put together a simple welding lens shade chart and hang it on the workshop wall for everyone to reference.
Printable Welding Lens Shade Chart
To make choosing the correct lens shade easier, I’ve created this downloadable and printable welding helmet lens shade chart based on recommendations from OSHA, ANSI, and AWS. We keep a copy posted in our workshop because it’s one of the quickest ways to verify the correct shade before striking an arc.
OSHA specifies the minimum lens shade required for different welding processes and amperage ranges. If you’re looking for the minimum level of protection that complies with safety regulations, OSHA’s recommendations are the benchmark.
ANSI and AWS often recommend slightly darker lens shades (typically 1 to 3 shades) for certain applications to improve visual comfort and reduce eye fatigue during prolonged welding. While these recommendations typically exceed OSHA’s minimum requirements, they should never be used if they make it difficult to clearly see the weld puddle or your workpiece.
Download, print, and keep this chart near your welding station for quick reference whenever you’re unsure which lens shade to use.
The infographic gives you a quick overview of the recommended welding lens shades. Now, let’s break it down in a simpler way, so you know exactly which shade to use for your specific welding process and amperage.
Recommended Lens Shades by Welding Process
1. Shielded Metal Arc Welding (SMAW)
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| Less than 60 | 7 | – |
| 60 to 160 | 8 | 10 |
| 160 to 250 | 10 | 12 |
| 250 to 550 | 11 | 14 |
SMAW (stick welding) can be performed at amperages ranging from below 60 amps to well over 550 amps, depending on the electrode size and application. According to OSHA’s minimum recommendations, a Shade #7 lens is suitable for welding at less than 60 amps. As the welding current increases, you’ll need progressively darker lenses, with Shade #11 recommended for amperages above 250 amps.
2. Flux Core Arc Welding (FCAW)
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| Less than 60 | 7 | – |
| 60 to 160 | 10 | 11 |
| 160 to 250 | 10 | 12 |
| 250 to 500 | 10 | 14 |
The amperage range for FCAW (flux-cored arc welding) is very similar to SMAW, although it typically tops out at around 500 amps. According to OSHA’s minimum recommendations, a Shade #7 lens is suitable for welding below 60 amps. Once you exceed 60 amps, you should use at least a Shade #10 lens, whether you’re welding at 100, 250, or 500 amps.
3. Gas Metal Arc Welding (GMAW) or MIG
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| Less than 60 | 7 | – |
| 60 to 160 | 10 | 11 |
| 160 to 250 | 10 | 12 |
| 250 to 500 | 10 | 14 |
OSHA’s minimum shade recommendations for MIG (GMAW) welding are the same as those for FCAW. For welding below 60 amps, a Shade #7 lens is recommended. Once the welding current exceeds 60 amps, you should use at least a Shade #10 lens, all the way up to 500 amps.
4. Gas Tungsten Arc Welding (GTAW) or TIG
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| Less than 50 | 8 | 10 |
| 50 to 150 | 8 | 12 |
| 150 to 500 | 10 | 14 |
TIG welding can be performed at amperages ranging from below 50 amps to as high as 550 amps. According to OSHA’s minimum recommendations, the required lens shade ranges from #8 to #10, depending on the welding current. Because TIG welding often operates at lower amperages than other arc welding processes, a Shade #8 lens is generally sufficient up to 150 amps.
For low-amperage TIG work, it’s also important to use an auto-darkening helmet with highly sensitive arc sensors that can reliably detect weaker welding arcs.
5. Plasma Arc Welding (PAW)
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| Less than 20 | 6 | 6 |
| 20 to 100 | 8 | 10 |
| 100 to 400 | 10 | 12 |
| 400 to 800 | 11 | 14 |
Plasma arc welding (PAW) covers one of the widest amperage ranges of any welding process, from less than 20 amps to as high as 800 amps. According to OSHA’s minimum recommendations, a Shade #6 lens is suitable for welding below 20 amps. For 20 to 100 amps, you should use at least a Shade #8 lens.
Once the welding current reaches 100 to 400 amps, a Shade #10 lens is recommended, while anything above 400 amps requires at least a Shade #11 lens.
6. Carbon Arc Welding (CAW)
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| – | 14 | 14 |
Carbon arc welding produces one of the brightest and most intense welding arcs. According to OSHA’s minimum recommendations, you should use at least a Shade #14 lens for this process. In fact, carbon arc welding is the only welding process in OSHA’s lens shade chart that calls for a Shade #14 filter, which is also the darkest shade commonly available in most welding helmets.
7. Air Carbon Arc Cutting (CAC-A)
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| Less than 500 | 10 | 12 |
| 500 to 1000 | 11 | 14 |
Unlike welding processes, air carbon arc cutting (CAC-A) often operates at extremely high currents, ranging from less than 500 amps to as much as 1,000 amps.
According to OSHA’s minimum recommendations, a Shade #10 lens is suitable for cutting below 500 amps, while a Shade #11 lens is required for currents between 500 and 1,000 amps.
8. Plasma Arc Cutting (PAC)
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| Less than 300 | 8 | 9 |
| 300 to 400 | 9 | 12 |
| 400 to 800 | 10 | 14 |
Plasma arc cutting (PAC) can be performed at currents ranging from less than 300 amps to as high as 800 amps. According to OSHA’s minimum recommendations, the required lens shade varies from Shade #8 to Shade #10, depending on the cutting current.
A Shade #8 lens is suitable below 300 amps, while Shade #9 is recommended for 300 to 400 amps, and Shade #10 for 400 to 800 amps.
9. Torch Soldering
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| – | 2 | 2 |
Unlike arc welding, torch soldering produces a relatively low-intensity flame rather than a bright electric arc. According to OSHA’s recommendations, a Shade #2 lens is sufficient to protect your eyes during this process.
For comparison, most auto-darkening welding helmets remain at a light shade of around #3 when you’re not welding, allowing you to see your work clearly. That means a Shade #2 lens only darkens your view slightly while still providing adequate protection for torch soldering.
10. Torch Brazing
| Arc Current (Amps) | OSHA Min. Shade No. | ANSI and AWS Shade No. |
|---|---|---|
| – | 3 | 3 or 4 |
Torch brazing produces a brighter flame than torch soldering, so it requires a slightly darker filter. According to OSHA’s recommendations, you should use a Shade #3 or Shade #4 lens, depending on the specific brazing operation and flame intensity.
The Right Shade Isn’t the Only Thing That Matters
I’d like to point out one important detail: choosing the correct lens shade is only part of the equation. If you’re using an auto-darkening welding helmet, it also needs to be CAPABLE of reliably detecting the welding arc, especially during low-amperage TIG welding.
I learned this lesson the hard way years ago. The first time I tried TIG welding with an auto-darkening helmet, I struck the arc… and nothing happened. The lens stayed in its light state, which was a pretty unpleasant surprise.
The problem wasn’t the shade setting. It was that my hood wasn’t designed to detect low-amperage TIG arcs. Many older and entry-level welding helmets struggle with weak TIG arcs because their sensors aren’t sensitive enough to trigger the filter consistently.
Since then, I’ve always recommended using an auto-darkening helmet specifically rated for low-amperage TIG welding, ideally one that can detect arcs down to 5 amps or even 2 amps. They combine highly sensitive arc sensors with a variable shade range, allowing the lens to activate reliably even during precision TIG work.
If you’re using a passive helmet or a fixed-shade welding helmet, the same rule applies: choose a lens shade that’s appropriate for your welding current. The right shade protects your eyes without making it difficult to see the weld puddle.
How To Choose the Right Lens Shade for Your Welding Helmet
Besides choosing the right equipment for the job, you also need to select the correct lens shade if you’re using a variable-shade auto-darkening helmet. It may seem confusing at first, but once you understand the basics, finding the right shade is actually straightforward.
Start by identifying the welding process. This could be Shielded Metal Arc Welding (SMAW), Flux-Cored Arc Welding (FCAW), Gas Metal Arc Welding (GMAW/MIG), Gas Tungsten Arc Welding (GTAW/TIG), Plasma Arc Welding (PAW), or another welding or cutting process. Each produces a different arc intensity and requires a different lens shade.
Next, determine the welding current (amperage). The recommended shade depends not only on the process but also on the arc current. For example, TIG welding can range from less than 50 amps to over 500 amps, while plasma arc welding may range from less than 20 amps to as high as 800 amps.
Once you know the process and amperage, use the Lens Shade Calculator or the Chart to find the recommended shade based on OSHA’s minimum requirements and the recommendations from ANSI Z87.1 and AWS.
Finally, fine-tune your selection based on your working conditions. Factors such as ambient lighting, welding position, joint visibility, personal eyesight, and the need to clearly see the weld puddle may influence whether you choose a shade at the lighter or darker end of the recommended range. The goal is to protect your eyes while maintaining a clear view of your work.
If you’re also interested in improving visibility, don’t overlook lens color technology. Modern welding lenses are available in green, blue, gold, and true-color designs, each offering a different viewing experience while maintaining the same protection when they share the same shade rating. If you’re unsure which is right for you, check out my detailed guide comparing the different welding lens colors.
Lens Shade Trends: What’s Changed?
Welding helmet technology has come a long way since I started welding. Modern auto-darkening hoods now offer variable-shade lenses, allowing you to adjust the filter to suit different welding and cutting processes instead of relying on a single fixed shade.
Depending on the model, you may find shade ranges such as 5-13, 5-14, or 3/5-13, making one helmet suitable for everything from low-amperage TIG welding to high-current fabrication work.
The best welding helmets also include features like adjustable sensitivity and delay controls, improved true-color optics, larger viewing windows, and higher optical clarity ratings. These advancements make it easier to see the weld puddle, reduce eye fatigue, and improve overall welding accuracy.
When selecting a lens shade, I usually follow the ANSI Z87.1 and AWS recommendations rather than relying solely on OSHA’s minimum requirements. They often recommend a slightly darker shade for certain applications, which many welders, including me, find more comfortable during long hours of welding. That said, the best shade is always one that fully protects your eyes while still allowing you to see the weld puddle clearly.
At the end of the day, choosing the right lens shade isn’t just about meeting safety regulations. It’s about protecting your vision without sacrificing weld quality. Take a few moments to verify the correct shade before every job. Your eyes have to last an entire career.
Frequently Asked Questions
No. Different welding and cutting processes produce arcs of varying brightness, so a single lens shade won’t work for everything. For example, low-amperage TIG welding typically requires a lighter shade than high-amperage stick welding or carbon arc welding. I always match the lens shade to both the process and the amperage instead of sticking with one setting for every job.
I recommend starting with the darker end of the recommended range. If you can clearly see the weld puddle and the joint, stick with it. If visibility is poor, move to a lighter shade while staying within the recommended range. The goal is to protect your eyes without making it difficult to see what you’re welding.
Not necessarily. A darker lens doesn’t automatically make welding safer. If it’s too dark, you’ll struggle to see the weld puddle, joint alignment, and surrounding hazards. The safest lens is the one that’s appropriate for your welding process and current conditions while still giving you a clear view of your work.
An excessively dark lens won’t expose your eyes to more UV or IR radiation, but it can create other problems. Poor visibility makes it harder to control the weld, increasing the risk of mistakes, poor weld quality, and workplace accidents. That’s why I always recommend using the correct shade, not simply the darkest one available.
Not unless the recommended range allows it. I often see beginners choose a lighter shade because they’re struggling to see the weld puddle, but that’s usually treating the symptom instead of the cause. A better solution is to improve the lighting, clean the helmet lens, or invest in a helmet with better optics or true-color technology. Never go below the recommended minimum shade just to get a brighter view.
No. In a properly certified welding helmet, the filter blocks harmful UV and IR radiation regardless of the selected shade setting. The shade number mainly determines how much visible light reaches your eyes. Whether your helmet is set to Shade #9 or Shade #13, the UV and IR protection remains the same.
Yes. The same shade can feel very different depending on where you’re welding. A bright outdoor job in direct sunlight may require a different setting than welding inside a dim workshop. As long as you stay within the recommended range, choose the shade that lets you see the weld puddle clearly in your working environment.
No. A True Color Shade #10 lens offers the same level of protection as a conventional green Shade #10 lens. The difference is that true-color technology improves color perception and contrast, making it easier to distinguish the weld puddle, joint edges, and surrounding metal without changing the protection level.
Absolutely. Wearing prescription glasses doesn’t change the lens shade you need. The correct shade is determined by the welding process and amperage, not by whether you wear corrective eyewear. Just make sure your glasses fit comfortably under the helmet without interfering with the headgear or your field of view.
Yes, in many cases. Welding and cutting processes don’t produce the same arc or flame intensity, so they don’t always require the same filter shade. For example, plasma cutting, air carbon arc cutting, and oxy-fuel cutting each have their own recommended shade ranges. Whenever you switch processes, it’s a good habit to verify that your lens shade is still appropriate before getting started.
The lens shade isn’t always the culprit. In my experience, poor visibility is often caused by something else entirely. You may have the shade set darker than necessary within the recommended range, or the problem could be a dirty or scratched cover lens, poor optical clarity, inadequate workshop lighting, or even changes in your eyesight over time. Before you adjust the shade setting, take a moment to inspect and clean your helmet. I’ve seen plenty of cases where simply replacing a scratched cover lens made a bigger difference than changing the shade itself.
OSHA establishes the minimum legal lens shade for workplace safety. ANSI and AWS often recommend slightly darker shades for certain applications to improve visual comfort and reduce eye fatigue during prolonged welding. Personally, I usually follow the ANSI and AWS recommendations, provided they still allow me to see the weld puddle clearly.
Key Takeaways
The shade number of a welding helmet’s lens is crucial, as it needs to match the arc’s amperage for optimal protection. Using a glass that is too light won’t provide enough protection, while one that is too dark can reduce visibility and fail to activate properly.
The required dark shade can range from as light as #3 to as dark as #14, depending on the amperage (and, consequently, the brightness) of the welding flash.
OSHA has specified the minimum lens shades required for different welding and cutting techniques at varying amperages, but ANSI and AWS usually recommend SLIGHTLY DARKER glasses. (typically 1 to 3 shades darker)
There are special shade requirements for different techniques such as Shielded Metal Arc Welding (SMAW), Flux Core Arc Welding (FCAW), Metal Inert Gas Welding (MIG), Tungsten Inert Gas Welding (TIG), Plasma Arc Welding (PAW), Carbon Arc Welding (CAW), Air Carbon Arc Cutting, Plasma Arc Cutting (PAC), Torch Soldering, and Torch Brazing.
Selecting the RIGHT lens shade involves considering the welding process, arc current, material thickness, position, and eye sensitivity. It’s important to ensure that the helmet’s shade range is neither too dark nor too bright for the specific welding task.
Thank you for this, up till now I thought the number 8 shade was as light as I could get, and at 65 my eyes are not as good as they used to be. So thank you for sharing your expertise, I will definitely try to put it to good use.
You’re most welcome John. I am so glad to help you.
Ad-free, no promotions and no paid endorsements. What a gem!
I appreciate the unpaid and unbiased effort to educate others, especially where there is plenty of bad information available and pitfalls for the unwary. This is something I make an effort to do in my profession, so I understand the opportunity cost.
Thank you so much for taking the time to put together such a well organized, informative, and well written website.
Thank you! I really appreciate your support. Providing honest, unbiased info is my priority, and it’s great to hear it’s making a difference. Glad you found the site helpful!