Smith Machine Bar Weight: Complete Guide (15–45 lbs)

Smith Machine Bar Weight by Machine Type

How heavy is a Smith machine bar? It depends on whether the machine has a counterweight.

These ranges come from equipment guides and manufacturer listings. No governing body sets a Smith machine bar weight, unlike the Olympic barbell. For a quick comparison, a standard Olympic bar is 45 lb (20.4 kg).

Smith Machine Bar Weight by Brand (Sourced)

Here's what we could confirm and where it comes from.

Cybex makes both a counterbalanced Smith press (15 lb) and a Smith rack (45 lb), so even within one brand the number depends on the model. If your brand or model isn't listed, the label on the machine is the best source.

Smith Machine Bar Weight at Planet Fitness, LA Fitness and Other Gyms

Gym chains buy equipment from several makers, and locations differ. That's why a single number for a whole chain isn't reliable.

So the Planet Fitness Smith machine bar weight is usually reported as lighter than an Olympic bar, but the exact number depends on the machine at your location.

Why Smith Machine Bars Are Lighter

The bar on a Smith machine is fixed to a carriage that slides on guide rods. On many machines, a hidden counterweight offsets part of that carriage's weight. Life Fitness, for example, lists a counterweight inside the frame tube of its Signature Series.

• Counterbalanced machines start lighter. A heavier counterweight means a lighter starting resistance.
• Machines without a counterweight start at the full weight of the bar and carriage, which can be 30 to 45 lb.
• Equipment guides add that some machines use a pulley ratio, so a counterweight may offset less than its full weight. Treat that as a general explanation, not a rule for every model.
• Friction in the guide rods can make a bar feel a little heavier than its label says.

Is the Bar Still 45 Pounds on a Smith Machine? Are All Smith Machines 25 lbs?

Is the bar still 45 pounds? Usually not. Most commercial machines start lighter. Some models without a counterweight, such as a Smith rack, can still start at 45 lb.

Are all Smith machines 25 lbs? No. There's no standard. The verified examples above are 15, 20 and 30 lb.

How much is a Smith machine bar with no weight? That number is the machine's starting weight: 15 lb on the Cybex Smith press, 20 lb on the Life Fitness Signature and 30 lb on the Hammer Strength model.

How much does the Smith machine bar weigh at my gym? The next section shows how to find out.

How to Find Your Gym's Bar Weight

1. Look for a label or plate on the frame. Some machines list the starting weight or the model number.
2. Search the model's manual. The Cybex manual lists the unloaded bar weight, for example.
3. Ask the staff. They may know the model or have the manual.
4. Check with a scale, if your gym allows it. Place a flat digital scale under the bar's resting point, unlock the bar and lower it slowly onto the scale. Hold it so it doesn't drop. The reading is approximate because of friction, and you should ask staff first.

Write the number down along with the machine's name, because the next gym may differ.

How Much Is 225 on a Smith Machine? Does It Match a Barbell?

Short answer: no, and there's no reliable conversion.

Research on Smith machine versus free-weight lifts gives mixed results:

So 225 lb on a Smith machine isn't 225 lb on a barbell. For squats, you may be able to lift more on the Smith machine, which researchers link to the lower balance demands. For bench press, the results are less clear. Some online calculators use fixed conversion factors, but none could be traced to published research here.

What to do instead: log your Smith machine lifts separately from your barbell lifts, and compare each with its own history. These studies were read at the abstract or summary level, and they tested small groups of lifters.

Does the Smith Machine Bar Count as Weight? How to Log It

Yes, if you want the total load you moved. Add the bar's starting weight to the plates.

Example: a 20 lb bar plus one 45 lb plate on each side is 20 + 45 + 45 = 110 lb.

What matters most for tracking progress is consistency. If you always use the same machine and count the bar the same way, your trend is valid even if the exact starting weight is a few pounds off. If you switch gyms or machines, note the change.

Smith Machine Bar Weight in kg

Troubleshooting: Why Your Numbers Don't Match

The Bottom Line

There's no single Smith machine bar weight. Cybex lists 15 lb, Life Fitness Signature 20 lb and the Hammer Strength model 30 lb, and some machines start at 45 lb. Find the number for your machine, include it when you log your lifts, and compare Smith machine numbers only with other Smith machine numbers.

To record your sets and total weights, you can use the workout logger in MyFitnessCoach. If you're new to the gym, our beginner gym guide is a good next step. For exercises on this machine, see the Smith machine shoulder press, Smith machine lunges and deadlifting on a Smith machine.

This article is for informational purposes only. Set the safety stops before every Smith machine set, and ask gym staff if you're unsure how the machine works. If you have an injury or health condition, consult a qualified professional before starting new exercises.

References

1. Life Fitness. Smith Machine (HSSM), catalog listing: starting resistance 30 lb (13.6 kg).
2. Cybex. Plate Loaded Smith Press 16121 owner's manual: unloaded bar weight 15 lb (7 kg).
3. Life Fitness. Signature Series Plate-Loaded Smith Machine (SSM) specifications: bar weight 20 lb (9 kg), start resistance 20 lb.
4. Schwanbeck S, Chilibeck PD, Binsted G. A comparison of free weight squat to Smith machine squat using electromyography. J Strength Cond Res. 2009. doi:10.1519/JSC.0b013e3181b1b181
5. Cotterman ML, Darby LA, Skelly WA. Comparison of muscle force production using the Smith machine and free weights for bench press and squat exercises. J Strength Cond Res. 2005.
6. Effects of training with free weights versus machines on muscle mass, strength, free testosterone, and free cortisol levels. J Strength Cond Res. 2020. doi:10.1519/JSC.0000000000003349