For most people the answer is one 20kg all-purpose Olympic bar — and you’re done.A barbell is defined by a small number of specs, and matching them to how you train is the whole decision. You’re really answering three questions: do you do a bit of everything or only lift heavy and slow, how much do you want to spend, and does a standard bar fit your body and your rack? Work through those and the right bar falls out. Here’s the quick version.
Step 1: How do you train?
- A bit of everything — squats, presses, rows, some Olympic work. Buy an all-purpose (Olympic) bar: 28–28.5mm shaft, dual knurl marks, bushing sleeves. It’s the versatile default and the right bar for the vast majority of home lifters. See our best Olympic barbell roundup.
- Only squat, bench and deadlift, and you lift heavy. Buy a power bar: a stiffer 29mm shaft, aggressive knurl, often a center knurl for a planted low-bar squat. See our best powerlifting barbell roundup.
- You clean and snatch regularly. Buy an all-purpose bar with bearing sleevesso the bar spins freely as it rotates in your hands. If you never do the Olympic lifts, skip bearings and save the money — see our bushing vs bearing guide.
Torn between the first two? Our Olympic vs powerlifting barbell guide walks the full decision.
Step 2: How much should you spend?
A dependable bar starts around $130–$170 and is genuinely good. Spending more buys bearing sleeves, a premium finish(stainless or Cerakote), and a more refined knurl — nice, but only the first changes training, and only for Olympic lifters. Below about $120 you hit soft steel and hollow sleeves worth avoiding. If budget is the priority, our best budget barbell roundup ranks the sub-$200 bars by value, and our how much a barbell costs guide breaks down each tier.
Step 3: Does it fit you and your rack?
A standard 7 ft, 20kgbar with a 28–28.5mm shaft fits almost everyone and every full-size rack. If you have smaller hands or find a 28mm bar too thick, a 15kg women’s barwith a 25mm shaft is easier to grip. And in a very small space, a 6 ft bar fits — but it holds less weight and may not rack in a full cage, so measure your rack’s inside width first. Our barbell dimensions guide covers this in detail.
The don’t-overthink-it default
If you want a single recommendation to stop deliberating: a 20kg, 28–28.5mm all-purpose bar with a hard-chrome or ceramic finish and bushing sleeves, around $150. It squats, presses, pulls and rows, it survives a garage, and it costs the least for the most capability. Load it with plates and a rack, and add a specialty bar later only if you find a weakness it can’t fix.
Sources
- Manufacturer product specifications for the bars in our barbell roundups (diameter, knurl, sleeve type, finish and capacity as published).
- Our own spec guides on sleeves, finishes and dimensions for the specs behind the decision.