US half dollar size — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/us-half-dollar/  (CC BY 4.0)
Basis: United States Mint coin specifications
Catalog version: 2026-10-20

Overall (mm): length 30.61, width 30.61, height 2.15
- US half dollar: Ø30.61 mm, 2.15 mm thick, 11.34 g, edge 150 reeds.

dimension  value
diameter  30.61 mm (1.21 in)
thickness  2.15 mm
mass  11.34 g
edge  150 reeds

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- US Mint: Coin specifications — web — Publisher's page; dimensions are facts — https://www.usmint.gov/learn/coin-and-medal-programs/coin-specifications

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/us-half-dollar/index.json
API: https://xemstudio.com/api/geometry?object=us-half-dollar