Build mode
Tap colorful plates to add them to your barbell. Watch the total weight update live as you load up.
Zero math required
Stop Doing
Plate Math.
Tap to build a barbell load or enter your target weight and get told exactly which plates to put on. Supports LB and KG, light and dark mode — built for lifters who'd rather lift than calculate.
225 lb loaded
90 lb per side — done in seconds.
Build or Reverse
Two modes, one answer.
Build & Reverse modes
LB & KG supported
Light & dark mode
Core Features
Everything you need. Nothing you don't.
Fast, focused plate math — so you spend less time at the rack and more time under the bar.
Reverse mode
Type in a target weight and the app instantly tells you the exact plates to put on each side of the bar.
LB & KG
Switch between pounds and kilograms with one tap. All plate sets update automatically to match your unit.
Visual barbell
Watch a real-time barbell graphic update as you add plates — exactly what it'll look like at the rack.
Per-side breakdown
Clear list at the bottom shows which plates go on each side and how many — no second-guessing.
Light & dark mode
Looks great under bright gym lights or in a dark home gym. Follows your system preference automatically.
Build Your Load
Tap any plate to add it to the bar. The barbell graphic and total weight update instantly — no typing, no calculating, no waiting. Hold a plate to pull it back off.
- Tap to add, hold to remove
- Barbell graphic updates in real time
- Per-side weight breakdown at the bottom
- Undo and reset in one tap
Start with the Weight You Want
Know you want to hit 165 lb but not sure how to get there? Flip to Reverse mode, type in your target, and the app does the rest. No math, no guessing, no wrong plates.
- Enter any target weight
- Instantly shows the optimal plate combo
- Works with any bar weight selection
- Unavailable plates shown grayed out
Pounds or Kilograms — Your Call
Training with a KG set? Tap the unit toggle in the top corner and every plate switches over automatically — the full KG plate set, correct bar weights, and accurate totals.
- Full KG plate set (25, 20, 15, 10, 5, 2.5, 2, 1.5, 1, 0.5 kg)
- KG bar options: 20 / 15 / 6.8 kg
- Switch units instantly, mid-session
- Same Build & Reverse modes in KG
Looks Great in Any Gym
Bright commercial gym or a dark home setup — Plate Calculator follows your system appearance setting automatically, so it's always easy to read when you need a quick answer mid-lift.
- Automatic light & dark mode
- High-contrast plate colors in both themes
- Clean, distraction-free interface
- Readable at a glance mid-workout
Two Modes. One App.
However you think about weight, we've got you covered.
Whether you're building up from scratch or working backward from a target, Plate Calculator gives you the answer fast.
Build Mode
You know what plates you want to load. Tap them and watch the total climb. Simple as that.
Reverse Mode
You know the weight you want to hit. Type it in and get back the exact plates to load per side.
Load the Right Weight Every Time
Free on the App Store. No account, no subscription, no mental math.