If you have a scale available, the easiest way to know for sure is to simply weigh the curl bar, either by holding it up carefully on its edge or by weighing yourself with and without the bar in your hands.
When you have no scale available, there are some good ways for you to estimate the weight of this handy piece of gym equipment.
Weight of Olympic Curl Bars
An olympic EZ curl bar is the kind of EZ curl bar that a commercial gym most likely has. It’s usually around 4ft long and most commonly weighs 20 lbs.
It’s called olympic because it has the larger 2″ diameter rotating sleeves that take weight plates with 2″ holes. See further below for standard curl bars that look much different.
Let’s go over a few models in order from the lightest to heaviest. The easiest way to estimate the weight of a curl bar is by its total length, which you can estimate by standing it up on its end next to you (you know your own height).
The above is a 14 lb version with very short 6.5″ sleeves, the smallest olympic curl bar you are likely to ever see.
The curl bar above is the most common size you’ll run across and weighs 19 lbs. Many of them come from the same factory in China. A curl bar sitting on a preacher curl bench at a gym is most likely one of these. Like the Titan one further above, it’s about 4ft long, but with slightly longer sleeves.
The next heaviest model is a longer one like the Rogue 54″ (or 4.5′) curl bar above weighing 30 lbs. The weight difference is due to the longer sleeves that will hold more plates.
It also happens to be better quality than a typical curl bar. Rogue put knurling over the entire shaft, with the exception of the very middle. This is in contrast to most other manufacturers who cheap out and knurl only some portions of the shaft near the bends.
The Rogue rackable curl bar above is 35 lbs. It’s extra long at over 6ft, with a shaft (the part you grip) over 4ft long between the sleeves to fit on a power rack. The weight increase here due to both the longer curled shaft and longer sleeves.
These 6ft bars are easy to identify because of their length. While it’s lying on its side its exact length might not be obvious, but when you stand it up on its end next to you, comparing it to your own height removes all doubt.
Weight of Standard EZ Curl Bars
A standard EZ curl bar, like all other standard bars, has non-rotating ends that are the same 1″ diameter as the middle shaft portion, made to take standard weight plates with 1.1″ holes.
This standard EZ curl bar weighs 14 lbs, which is pretty typical. If you look closely you’ll see that the ends are threaded, with spin-lock collars to hold plates on. There is not a lot of variety in standard curl bars, due to the smaller market. These used to be more common in home gyms. Everyone has been moving towards olympic sized weights for years, and standard weights are becoming harder to find.