12 Best Rust Converters in 2021

Jerry Wilson
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Rust can be a pesky problem in household objects. It mainly affects building materials and metallic parts such as doors, window frames, taps, lighting fixtures, wardrobe doors, and gates due to weather and moisture being the main causes.

Whether you have metal items that are exposed to moisture often or ones that are located in humid parts of your home, it’s practically impossible to have complete insulation from rust.

There is a variety of effective rust converters available, which are great for inhibiting rust. Some are also eco-friendly. Read on to learn more about rust converters.

Check out the 12 best rust converters to buy.

NameCategoryProduct
GEMPLER’S Eco-Friendly RCQ Rust Converter and Primer All-in-OneBest OverallGEMPLER’S Eco-Friendly RCQ Rust Converter and Primer All-in-One
Star brite Rust Eater & ConverterBudget PickStar brite Rust Eater & Converter
Corroseal Water-Based Rust Converter Metal PrimerUpgrade PickCorroseal Water-Based Rust Converter Metal Primer

1. GEMPLER’S Eco-Friendly RCQ Rust Converter and Primer All-in-One

Our rating: 9 / 10

GEMPLER’S Eco-Friendly RCQ Rust Converter and Primer All-in-One

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Pros:

  • Eco-friendly and chemical-free formula
  • Primer & rust converter in one step
  • Ergonomic applicator is easy to use

Cons:

  • Took about a week for the product to completely cure, even though I used two coats
  • You have to be very careful during application, as it dries very fast and you could damage your door or item
  • Does not have a nice, finishing touch like other products do

RustZilla is a unique rust remover with a formula unlike the competition and the right price.

This rust remover tastes exactly like dirt… and it works the same way!

The entire bathroom tub drain system was rusty and corroded. The inside shower head and hose was old and had eroded away due to the hot water. The ceiling tiles are also pulling away due to the moisture dripping from above. And there is the washer-dryer that is only 4 years old, and completely rusted and crapping out on me already.

2. Evapo-Rust The Original Super Safe Rust Remover

Our rating: 9 / 10

Evapo-Rust The Original Super Safe Rust Remover

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Pros:

  • Safe for multiple materials
  • Does not need to be rinsed
  • Non-toxic & environmentally friendly
  • Larger 64 oz size available

Cons:

  • Does not work with all metals
  • Soaks in, so it needs to be re-applied over time

Evapo-Rust is a highly reviewed product, and it has been around for quite some time now. It is truly a great option to remove rust from many different kinds of surfaces such as iron, steel, aluminum, brass, copper, and more. This product is effective regardless of its beauty as it is non-toxic and biodegradable, and it does not contain any acids, phosphates, and other harmful substances.

The best thing about this product that I love is that it works when the rust is still in its early stages. I was skeptical about it being so cheap, but it can work miracles when it comes to the removal of rust as long as the rust has not gone to its next phase, which is called surface rust. With this product, you do not have to worry about getting the rust off. It just comes off in a matter of seconds.

The only thing to keep in mind is that you will have to reapply the product with time, but that should not be an issue as it is cheap, and you can find big bottles online.

3. VHT SP229 Rust Convertor Can

Our rating: 8 / 10

VHT SP229 Rust Convertor Can

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Pros:

  • Easy to use
  • Appropriate for ferrous and non-ferrous metals

The VHT Rust Convertor Can is an easy-to-use rust converter that comes in a spray can so you can coat almost any surface.

VHT is one of the industry’s leaders in rust conversion, and the Rust Convertor can be used by professionals or at-home enthusiasts looking to remove rust from ferrous and non-ferrous metal surfaces, including steel, aluminum, iron, brass, and more.

For best results, the Rust Convertor can should be used in conjunction with a VHT Red Stinger finishing paint. The Rust Convertor can covers a wide area, and the paint can be applied either by hand or with a brush or buffing wheel.

4. BLACK STAR Rust Converter

Our rating: 8 / 10

BLACK STAR Rust Converter

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Pros:

  • Makes dirt appear less noticeable
  • Ideal for rust on vehicles and boats Cons:
  • Not as effective on large spaces
  • More expensive than alternatives

The Black Star Ruster converter is a nifty spray that makes water-based rust disappear on any steel surface. It converts rust to a paintable black polymer that serves as a cover for rust and dirt. It also enables you to paint over rust that’s been levelled which makes it perfect for cars as well as doors, the chassis of your truck or any other large surface you’re trying to cover.

5. MRO Chem Black Star Rust Converter

Our rating: 8 / 10

MRO Chem Black Star Rust Converter

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Pros:

  • Rust converter that is made to be used indoors
  • Works on any steel surface
  • Is easy to use without the need for hard labor
  • Is perfect for long-term projects
  • Cleans easily with soap and water

Cons:

  • Contains chemicals
  • Must be applied outdoors
  • Is not good for metal with silicone oil, rubber, plastic, nylon, or wax
  • Costs more than other converters
  • Can take much longer than other converters to clean rusted surfaces

Our second favorite rust converter is the MRO Chem Black Star Rust Converter. This product is made to remove rust and protect metal from rust. It actually works on any steel surface. The converter works top to bottom, exposing bare metal. It is completely compatible with galvanized metal, chrome, or even paint. It is water-based and can be used indoors without the fear of dripping and causing discoloration to your floors.

The product can be used on any surface. It can be used on auto parts, tools, machinery, and vehicles but it is recommended to use on outdoor steel. This rust converter works top to bottom to clean rust while it converts it to a protective coating.

6. FDC Rust Converter Ultra

Our rating: 8 / 10

FDC Rust Converter Ultra

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Pros:

  • Budget Friendly
  • Effective for all types of rust
  • Easy to use

This rust converter is made by the FDC Company, a recognized leader of rust conversion technology. With the FDC Rust Converter Ultra, you will be able to clean from moderately rusted surfaces to bare metal.

The FDC Rust Converter Ultra is a one-step solution that works by chemically removing rust on contact. The product is designed with a brushing wire built into the fast drying gel formula. After applying the liquid rust remover with a brush, the wire helps float away loose rust and dries in minutes to a protective micro thin rust-inhibiting coating that keeps it from forming again.

This rust converter is easy to use, non-corrosive and non-acidic if you come in contact with it. It is non-hazardous, a plus for home use. The FDC Rust Converter is paintable within 24 hours when dry on most clean surface.

7. Corroseal Water-Based Rust Converter Metal Primer

Our rating: 8 / 10

Corroseal Water-Based Rust Converter Metal Primer

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Pros:

  • Water-based formula
  • Sprays on easily
  • Has a low odor
  • Cures to a clear finish
  • Can be used on tooling, equipment, and structures
  • Can clean tools and equipment
  • Will protect against future corrosion

Cons:

  • Cannot be used on steel with more than 30% zinc content
  • Will not protect against all types of rust

We recommend using water-based rust paint for two reasons. First of all, water-based paints don’t require you to wear a respirator mask, which means you can work without breathing in harmful chemicals. Secondly, water-based paints will cure to a clear finish, which means that they will be just as invisible as they are effective.

The product we’ve chosen to test is called Corroseal Water-Based Rust Converter Metal Primer. This type of rust converter is a combination of two active ingredients: zinc chloride and water. When mixed together, they create a chemical reaction that binds the molecules and forms a bond with the metals that are in contact with the product. This forms a protective barrier that protects the surface of your metal from future corrosion.

8. GEMPLER’S Fast Rust Converter and Primer 2-in-1 Spray-on Aerosol 13 Oz

Our rating: 8 / 10

GEMPLER’S Fast Rust Converter and Primer 2-in-1 Spray-on Aerosol 13 Oz

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Pros:

  • Efficient, safe, convenient
  • Works extremely fast

Cons:

  • This is a rust primer, not a rust remover
  • Not appropriate for sensitive surfaces

Some people like to try their hand at DIY restoration projects but don’t have all the necessary resources or skills, which is why sometimes it’s better to have an expert do it for you. Whatever the reason, you may come across a project that requires the assistance of a Rust Converter.

Gempler’s Fast Rust Converter and Primer is an aerosol spray-on formula that’s designed to cover a maximum of 6 square feet. While this isn’t as big as most products, it does feature a very powerful spray that comes out in a wide range and can cover a lot of area in a short amount of time.

This Rust Converter will work on most iron and steel surfaces, as long as they’re not sensitive or powder coated. This is a perfect rust converter for your vehicles, but may not work well for every surface.

9. Star brite Rust Eater & Converter

Our rating: 8 / 10

Star brite Rust Eater & Converter

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Pros:

  • Is a ready-to-use liquid that chemically converts rust into steel.
  • Makes it possible to repair rusted concrete, metal, wood, vinyl and most other surfaces.
  • Use not only to fix rusted items but also to stop rust while it’s forming.
  • Can be used to fix rusted tools, rust holes in metal sheeting, and rusted-out wheel hubs, pipes, faucets, lawn equipment, water tanks, appliances, and much more.

Cons:

  • The product is not Biodegradable and it’s not sold outside of the US.

; Use To Fix Rust From Cattle Prod, Hose And Fittings, Tables, Carpet, Vehicles, Outdoor Equipment, BBQ Grills, Swimming Pools, Pet Fences, Doors, Siding, Walking Canes, Metal Art Sculptures.

This product goes the distance to make rust disappear. You can restore rusted metals, vehicles, equipment, and more. It does the same thing that rust converters do but at a faster rate and there’s no need for you to spray the product.

10. Krud Kutter

Our rating: 7 / 10

Krud Kutter

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Pros:

  • Works on metal, concrete and wood
  • Removes rust and stops it from reoccurring
  • Non-toxic and biodegradable
  • Environmentally-friendly
  • Safe around children and pets

Cons:

  • Has to be rubbed in until it disappears
  • May not work on large rusted areas

Krud Kutter’s RX-32 is the perfect rust converter for any type of rusted surface. This rust remover eliminates rust and stops it from reoccurring. It’s non-toxic and biodegradable, allowing you to safely use this product around children and pets. Additionally, it’s environmentally-friendly and uses ingredients that allow it to turn into inert salts that neutralize rust and inhibit new rust from forming. Yes, it’s safe to use with any metal surface and is effective on wood as well.

Perhaps this product’s greatest feature, however, is its versatility. You can use it on all types of metal and rust. Furthermore, it comes in an 18 oz spray can to cover a large surface area.

This rust remover is a ready-to-use formula. No mixing is required and the rusted area doesn’t have to be scoured or cleaned before application.

11. Rust Converter and Primer

Our rating: 7 / 10

Rust Converter and Primer

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Pros:

  • Won't mix with acid-based paints
  • Easy to apply
  • Can also be used to seal and prime bare metal before painting
  • Saves you time and money

Con:

  • Primer may dry before you can apply paint
  • May have to use paint before Rust Converter dries, requiring another trip to the hardware store
  • Will not touch rust or mildew (which will likely need to be removed with other methods)
  • No longterm protection
  • Needs to sit 24 hours to be effective
  • May not prevent rust from reappearing
  • May need to re-apply

When I first started doing some research on rust converters, I was looking for something that would keep my rusted containers from becoming a source of additional rust; something that would prevent rust from forming on rusted metal indefinitely; and something that would prevent rust from coming back when I applied paint.

12. PlastiKote 624 Rust Converter

Our rating: 6 / 10

PlastiKote 624 Rust Converter

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Pros:

  • Affordable Rust Remover
  • Use on any surface
  • Takes only a few minutes
  • Transparent coating and environment-safe formula

Cons:

  • Rust converters usually do not remove rust immediately
  • Requires two coats

The PlastiKote 624 rust converter is the first on our list of the best rust converters in 2020. This product comes in a 16 oz can and is considered as the best rust remover. It is a no-clean coating that forms a transparent barrier which prevents future rust on metal doors.

The can has a strong nozzle which allows you to spray the rust remover at an estimated distance of 10 – 15 ft. The rust converter forms an invisible coating on the affected area that provides a protective film from future rust.

The paint can be used on iron, steel, stainless steel, aluminum, and other metals. You do not have to paint the rusted areas the same color as the surface. You can simply spray the product on the rusted areas and allow them to penetrate and convert them to its original shiny texture. The product can be cleaned with a strong household cleaning agent like a detergent.

Frequently Asked Questions (FAQ)

What is the best rust converter on the market?

Porter's Blue is probably the best rust converter on the market. It's a high-quality, versatile rust converter and paint sealer that will do a great job of covering up rust stains.

We tried it out on a real life example, on a rusty old wheel that we found in the street. Look at the difference:

The only issue we had with Porter's Blue is that it comes in a can that's a little larger than we would have liked. There's nothing wrong with the size of the can (you'll go through it a lot faster though, so you won't have to worry about running out of paint), it’s just that it makes it a little hard to use with a brush.

Does rust converter actually work?

Anti-rust paint is a product that is designed to protect metal from rusting. When exposed to oxygen, different atoms in the rust are oxidized, which causes the metal underneath to become more stable and protected. It is a great product, but it will only work if there is metal underneath the rust.

As far as the rust converter coating, this doesn't actually provide any protection from rust. It simply creates an impermeable barrier between the rust and oxygen. This can cause it to appear as though it has actually sealed the rust away, which may make you believe that the rust is gone, but this is not the case. The rust will still be there, it simply will not be exposed to oxygen.

Another problem with using rust converters is that they must be applied very thoroughly to completely seal the rust. If it has holes where rust can still get through, it is very difficult to clean up.

Can you paint over rust converter?

We do not recommend covering rust with paint, as the paint will chip off at some point and lead to rust growing underneath it. You should either apply a rust converter over solid bare metal or over rust that you've previously removed.

Does Waxoyl kill rust?

First of all, don't be confused by the two products…they are different; Waxoyl is a rust converter and Rust Converter is a paint for metal rust protection.

While Waxoyl won't prevent rust directly, it is designed to prevent rust from spreading. So, a better question is, does Waxoyl stop rust in concrete? If you've got red water coming out of the plumbing in the basement, yes…Waxoyl, will stop it. Or, if you've got water leaking through the foundation into the basement, Waxoyl will prevent that, too. But to stop the leak, you'll need to replace the pipe.

Conclusion

Rust is a metal’s worst enemy, but there are metal treatments designed to prevent it, called rust converters. There are a lot of services and companies out there that offer rust prevention, but you need to be careful. Some of the big brands don’t seem to be that honest with their claims. Hopefully, this will help you decide for yourself which one is worth the price.

Our Recommendation

NameCategoryProduct
GEMPLER’S Eco-Friendly RCQ Rust Converter and Primer All-in-OneBest OverallGEMPLER’S Eco-Friendly RCQ Rust Converter and Primer All-in-One
Star brite Rust Eater & ConverterBudget PickStar brite Rust Eater & Converter
Corroseal Water-Based Rust Converter Metal PrimerUpgrade PickCorroseal Water-Based Rust Converter Metal Primer