How Many Plates Is 225, 315, 405? (Plate Calculator)

Disclosure: Brolic is ours. The advice works with any app, or with pen and paper.

In short

With a 45 lb bar and 45 lb plates: 135 = one plate a side, 225 = two, 315 = three, 405 = four, 495 = five. In a kilo gym, 60 kg = one 20 kg plate a side, 100 kg = two, 140 kg = three.

“A plate” = one 45 lb plate on each side.
Bar weight counts: 45 lb / 20 kg.
Big milestones: 2, 3 and 4 plates.

The plate milestones (pounds)

135 lb — 1 plate: bar 45 + 45 each side.
225 lb — 2 plates.
315 lb — 3 plates.
405 lb — 4 plates.
495 lb — 5 plates.

For 500 lb: 5 plates a side plus 2.5 lb each side.

In kilograms

A standard bar is 20 kg. With 20 kg plates: 60 kg (one a side), 100 kg (two), 140 kg (three), 180 kg (four). With 25 kg plates: 70, 120, 170, 220 kg.

Why lifters count plates

Plates are easy to see from across the gym and make clean goals: “two plates on bench” is a milestone most lifters remember hitting.

Plates-per-side calculator

Target weight Units

Assumes a standard Olympic bar and common plates.

Chase the next plate with Brolic

Brolic on iPhone — a lift’s leaderboard — Brolic on iPhone

Log in seconds. Nudge the weight with −10, −5, +5 and +10 buttons above the keypad.
See your next milestone. A bar shows your next step — your next strength level or your next plate milestone (2 plates, 3 plates).
Kilograms or pounds. Switch in Settings or per exercise; leaderboards convert so everyone is compared fairly.
Know who to beat. The gap to the lifter directly above you: “5 lbs more to pass Ramon”.

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Common questions