Block size — Bitcoin onchain, per block · Bitsaga

How big the block is in bytes on disk. Since SegWit this can exceed the old one-megabyte limit, because witness data is counted at a discount.

DefinitionSerialised block size in bytes.

LimitSize is not the binding limit; weight is. A block can be small in bytes and completely full.

Unitbytes

Also filed under

How full are blocks How much blockspace is being used, and what shape is it?
Block weight the measure blocks are actually limited by
Block fill how much of the block limit was used
Witness bytes bytes spent on signatures and scripts
Witness share of block weight how much of the weight budget went on witnesses
Witness share of block size how much of the block's bytes were witnesses
Weight discount how much cheaper the block got from SegWit
SegWit share of transactions how many transactions use SegWit
SegWit share of block weight how much of the block SegWit transactions took
Transactions in block how many transactions the block carried

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