Weight Unit (WU)
Transactions● Common
The fundamental unit of block space measurement post-SegWit. Non-witness bytes count as 4 WU, witness bytes as 1 WU. Maximum block weight is 4,000,000 WU. vbytes = WU / 4.
Technical Notes
Transaction weight = base_size × 4 + witness_size. Block weight = sum of tx weights + header. 4M WU accommodates ~2,700 simple txs or more SegWit txs. Incentivizes witness usage through discount.
Metadata
Visibility: Public
Created:1/3/2026by System