Barbell guides
Straight answers about bars, plates and loading, checked against the same math the calculators use.
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- Barbell plate chartEvery load from the empty bar to 600 lb and 270 kg.
- How much does a barbell weigh?A standard Olympic barbell weighs 20 kg (44 lb); US gyms usually use 45 lb bars. Women's, technique, EZ, trap, safety squat and Smith bars compared.
- 45 lb vs 20 kg plates45 lb = 20.41 kg and 20 kg = 44.09 lb. See plate-by-plate conversions, how much a fully loaded bar differs, and when the difference matters.
- Olympic vs standard barbellsOlympic bars have 2-inch sleeves and weigh 20 kg (45 lb); standard bars have 1-inch sleeves and weigh about 15–25 lb. What fits what, and which to buy.
- Weight plate colors explainedRed 25 kg, blue 20 kg, yellow 15 kg, green 10 kg, white 5 kg. The full color code for kilo and pound plates, change plates, and why some gyms are all black.
- Does the bar count when lifting?Yes: the barbell's weight always counts toward the total you lifted. How much bars weigh, how to count a loaded bar, and the few cases where it's different.
- Why load plates symmetrically?Even stacks keep the bar balanced and safe.
All guides
- Gym MathWhat Plates Do I Need? Barbell Loading Chart (lb & kg)The exact plates per side for 135, 185, 225, 315, 405 and more. Coach-tested loading chart for a standard 45 lb bar, plus a full kg guide.
- Gym MathHow to Count the Weight on a Barbell (Simple Method)Learn how to count the weight on a barbell the right way, including the bar, with simple worked examples and a fast mental shortcut lifters use.
- EquipmentBumper Plates vs Iron Plates: Which Should You Buy?Bumper plates or iron? A coach breaks down the real differences in diameter, price, and drop tolerance so you buy the right plates once.
- Training ScienceDumbbell Bench to Barbell Conversion: The Coach's GuideConvert your dumbbell bench press to a barbell number in seconds. Coach-tested formula, full DB-to-barbell chart, and why the math is only a starting point.
- EquipmentEZ Curl Bar Weight: How Much Does an EZ Bar Weigh?An EZ curl bar weighs about 7 kg (15 lb) on average, not 45 lb. Here is how to find your exact bar weight and log it right.
- Training ScienceFractional Plates: Micro Loading to Break PlateausFractional plates let you add as little as 0.5 kg to the bar. Here's how micro loading keeps your press and bench moving when 5 lb jumps stall.
- Gym MathThe Plate Club: One, Two, Three & Four Plate GoalsWhat the two plate club, 315 club and four plate deadlift actually mean in pounds and kilos — and how to know when you've earned your spot.
- Gym MathPowerlifting Kilo Chart: How to Load a Bar in KGThe exact kg loading chart used on the platform. Load any total in kilos per side, learn the plate colors, and stop converting on meet day.
- EquipmentSafety Squat Bar Weight: How Much Does an SSB Weigh?A safety squat bar weighs 60-70 lb, not 45. Learn the real SSB weight, why it feels harder, and how to load it right for accurate numbers.
- EquipmentHow Much Does a Smith Machine Bar Weigh? (The Real Answer)The Smith machine bar is almost never 45 lb. Here's why the real weight ranges 15-55 lb, and exactly how to find yours.
- Gym MathHow to Load a Barbell for Squats and DeadliftsLoad plates the right way for squats and deadlifts — biggest first, matched pairs, correct bar height. Per-side chart included.
- EquipmentStandard vs Olympic Plates: Do They Fit Your Bar?Standard and Olympic plates aren't interchangeable. The center hole is the whole story — here's what fits what, and why it matters for your lifts.
- EquipmentTrap Bar Weight: How Much Does a Hex Bar Weigh?Trap bars aren't standardized — they range from 20 to 30 kg. Here's how to find your exact hex bar weight and log every rep accurately.
- EquipmentWomen's Barbell Weight: How Much Does It Weigh?A women's Olympic barbell weighs 15 kg (33 lb) — 5 kg lighter than a men's bar. Here's why that matters for your logging and programming.