The weight of a barbell used in the bench press can vary depending on the type of barbell being used. Here are the most common types and their standard weights:

1. Standard Barbell
- Weight: 45 pounds (20.4 kg)
- Length: Typically 7 feet long
- Usage: This is the most commonly used barbell for bench pressing and other lifts in gyms.
2. Olympic Barbell
- Weight: 45 pounds (20.4 kg) for men’s bars; 33 pounds (15 kg) for women’s bars
- Length: Men’s Olympic bars are also about 7 feet long, while women’s bars are generally 6.5 feet long.
- Usage: Olympic bars are designed for powerlifting and Olympic lifting and are used in most competitive settings.
3. EZ Curl Bar
- Weight: Usually between 25 and 35 pounds (11.3 to 15.9 kg)
- Length: Typically around 4 to 5 feet long
- Usage: Primarily used for bicep curls and tricep extensions, this bar can also be used for bench presses, though it’s less common.
4. Smith Machine Bar
- Weight: Varies, but the bar itself can weigh anywhere from 15 to 45 pounds (6.8 to 20.4 kg) depending on the machine.
- Usage: The Smith machine allows for a guided motion, making it popular for bench presses and other lifts.
Additional Considerations
- Weight Plates: When calculating the total weight lifted during a bench press, remember to add the weight of the plates attached to the barbell. For example, if you’re lifting a standard barbell and you add two 45-pound plates, the total weight would be 135 pounds (45 + 45 + 45).
- Variability: Some gyms may have specialty bars that can weigh more or less than the standard bars mentioned. Always check the specific equipment available in your gym.
Summary
In most cases, if you’re using a standard or Olympic barbell for bench pressing, the bar itself will weigh 45 pounds (20.4 kg). If you’re using other types of bars, be sure to check their weight, as it can vary significantly. When calculating your total lift, always include the weight of the bar in addition to any plates added.