At Planet Fitness, the standard Olympic barbell typically weighs 45 pounds (20.4 kg). This is consistent with most gyms, as the Olympic barbell is widely used for various strength-training exercises. Additionally, Planet Fitness may have lighter bars, especially for beginners, often weighing around 33 pounds (15 kg).
If you're utilizing their smith machines or specialized equipment, the weight of the bar might differ. For example, some smith machines have fixed bars that can weigh anywhere from 10 to 20 pounds, while others are designed to allow free weight movements.
If you're unsure about the specific equipment or bars available at your location, it's always a good idea to ask a staff member for assistance. This way, you can accurately gauge how much weight you're lifting, which is important for your training progress and safety.