How Much Does a Barbell Weigh? (Every Bar Type Explained)

Last updated: May 2026

The short answer: most barbells weigh 45 lbs (20 kg). That’s the standard for men’s Olympic barbells, power bars, and deadlift bars — the three types you’ll encounter in the vast majority of gyms. But walk into a serious strength gym and you’ll find at least six or seven different bars, each with a different weight, and assuming they all weigh 45 lbs will throw off your total.

Here’s a complete breakdown of every common barbell type and how much each weighs.

Barbell Weight by Type: Quick Reference

Bar Type	Weight (lbs)	Weight (kg)	Best For
Men’s Olympic bar	45 lbs	20 kg	All compound lifts
Women’s Olympic bar	33 lbs	15 kg	Olympic lifting (women)
Power bar	45 lbs	20 kg	Squat, bench, deadlift
Deadlift bar	45 lbs	20 kg	Max deadlifts
Squat bar	55 lbs	25 kg	Heavy squats
Trap bar / Hex bar	45–70 lbs	20–32 kg	Deadlift, carries
Safety squat bar	60–70 lbs	27–32 kg	Squat with shoulder issues
Swiss / football bar	25–45 lbs	11–20 kg	Pressing variations
EZ curl bar	15–25 lbs	7–11 kg	Curls, skull crushers
Triceps bar	20–25 lbs	9–11 kg	Triceps extensions
Technique / training bar	5–15 lbs	2–7 kg	Beginners, rehab
Smith machine bar	15–45 lbs	7–20 kg	Machine-guided lifts
Standard bar (non-Olympic)	10–15 lbs	4.5–7 kg	Home gym starter sets

When you’re unsure which bar is in your hand, the safest rule in a commercial gym is to assume it’s a standard men’s Olympic bar at 45 lbs — unless it’s visibly shorter, thinner, or differently shaped than a straight 7-foot bar.

The Men’s Olympic Barbell (45 lbs / 20 kg)

This is the default barbell in almost every gym. It’s 7.2 feet (2.2 meters) long, weighs exactly 20 kg (44.1 lbs, rounded to 45 in everyday use), and has rotating sleeves that spin independently of the shaft. The rotating sleeves are essential for Olympic lifts like the snatch and clean and jerk — they reduce the rotational force on the wrists as the bar accelerates during the pull.

Power bars are a subset of this category. They have the same 45-lb weight but are stiffer, have more aggressive knurling (including center knurling for back squats), and have less sleeve rotation. The reduced flex is intentional — powerlifters don’t want the bar bending and storing elastic energy the way it does in Olympic lifting.

The Women’s Olympic Barbell (33 lbs / 15 kg)

Women’s Olympic bars are slightly shorter (6.6 feet / 2 meters), slightly thinner in diameter (25mm vs 28mm), and weigh 15 kg. The thinner shaft makes them easier to grip for lifters with smaller hands. In competitive Olympic weightlifting, women’s bars are mandatory. In powerlifting, there’s no gender-specific bar — men and women compete with the same 20 kg bar.

In most commercial gyms you’ll find only men’s bars. Women’s bars are more common in facilities with dedicated Olympic lifting platforms.

The Deadlift Bar (45 lbs / 20 kg)

The deadlift bar weighs the same as a standard Olympic bar but is longer and thinner, which gives it more flex or “whip.” The extra flex lets the middle of the bar bend slightly before the plates leave the ground, effectively reducing the range of motion at the start of the pull and making it possible to lift slightly more weight.

The sleeves on a deadlift bar are also longer to accommodate heavier loading — competitive deadlifters sometimes use enough weight to fill the entire sleeve. Deadlift bars are more common in powerlifting gyms than commercial gyms.

The Squat Bar (55 lbs / 25 kg)

The squat bar is thicker, stiffer, and heavier than a standard Olympic bar. That extra 10 pounds matters when you’re handling 500+ lbs — a thicker bar distributes the load more evenly across the upper back and reduces the bar’s tendency to dig into the traps. Center knurling is more aggressive to keep the bar from rolling off the back during heavy squats.

The squat bar’s stiffness is a feature, not a bug. On a standard Olympic bar, very heavy squats create noticeable end oscillation as the plates swing. The squat bar eliminates this for a more stable feel under competition loads.

The Trap Bar / Hex Bar (45–70 lbs)

Trap bars vary more in weight than most bars because they come in many different shapes and sizes. The most common design — a diamond or hexagonal frame with two sets of handles (one high, one low) — typically weighs around 55 lbs (25 kg). Some compact models weigh as little as 45 lbs; heavier commercial versions can reach 70 lbs.

When you deadlift with a trap bar, you stand inside the frame and grip handles at your sides rather than in front. This shifts the loading toward the quads and reduces strain on the lower back compared to a conventional deadlift. The lower handle position extends the range of motion; the high handles shorten it.

The Safety Squat Bar (60–70 lbs)

The safety squat bar is the heaviest specialty bar most lifters encounter regularly. Its distinctive padded yoke sits across the shoulders and neck, and handles extend forward so you can push against them to stay more upright. The cambered shape places the plates slightly behind and below the bar’s contact point on the shoulders.

Because it weighs 60–70 lbs and changes the squat mechanics significantly, you’ll typically lift noticeably less on the safety squat bar than on a straight bar — at least until you adapt to it. Assuming it’s a 45-lb bar will cause you to underestimate your load by 15–25 lbs.

The EZ Curl Bar (15–25 lbs)

The EZ curl bar’s wavy shape allows multiple grip angles — particularly the semi-supinated grip that reduces wrist and elbow stress during curls and skull crushers. It’s shorter than a standard bar (typically 4 feet) and much lighter, with no standardized weight. Most weigh between 15 and 25 lbs. When calculating the total weight for a set of skull crushers or preacher curls, always check the specific bar’s weight — there’s no universal standard here.

The Smith Machine Bar (15–45 lbs)

The Smith machine bar is attached to guide rails and moves only vertically. Its weight varies widely because most Smith machines use a counterbalance system that offsets some of the bar’s weight. A Smith machine bar can be as light as 15 lbs if heavily counterbalanced, or close to 45 lbs if it’s not counterbalanced at all. When in doubt, ask gym staff — the bar weight should be marked on the machine.

Why Barbell Weight Matters

Every number you report — your bench press, squat, deadlift — includes the bar. A 225-pound bench press means 135 pounds of plates plus a 45-pound bar. If you’re using a 55-pound squat bar and reporting a 315-pound squat, you’re actually using only 260 pounds of plates. The bar is always part of the equation.

This also matters during programming. When you calculate percentages of your 1RM for accessory work or warm-up sets, the bar weight affects those calculations. Switching bars mid-training cycle without adjusting for the weight difference can throw off your planned loads.