Skip to main content
Bitcoin$78,795.15+1.66%NeutralNews

BITCOIN BLOCK SIZE AND FULLNESS

How full are Bitcoin's blocks?

How many blocks arrived, how full they were, and how big a typical one is.

Update time unavailable
How full Bitcoin's blocks were, by date chartmaketomaketo.com/bitcoin/blocks020406080100201020132016201920222025Aug 31, 202696

How full Bitcoin’s blocks were, each day. The space used against the space the rules allow. Readings before August 2017 use the closest equivalent measurement.

Latest displayed reading: 96.233 on Aug 31, 2026. This view shows 6,052 dated readings from Feb 5, 2010 to Aug 31, 2026. The latest displayed reading is higher than the first. The displayed low is 0.022 on Feb 7, 2010. The displayed high is 99.894 on Mar 21, 2021. Every day in this range has a reading.

Pick two to four dates and read this chart's values side by side.

  1. How full are Bitcoin's blocks?

    96.2%

    Bitcoin's blocks were 96.2% full on Aug 31, 2026.

    Full means full of the space a block is allowed to use, which is fixed by the rules and cannot be raised by demand.

  2. How many blocks arrived?

    152
    blocks that day
    144
    what it aims for
    one block every ten minutes
    +8
    ahead of schedule

    Bitcoin aims at a block every ten minutes, so 144 a day, but finding one is a guessing game and the count wanders either side of that. It corrects itself: roughly every two weeks the difficulty is retuned to pull the average back to ten minutes.

  3. How big is a typical block?

    1.59 MB
    the middle block
    1.53 MB
    the average block
    232.85 MB
    written that day
    every block added together

    A block has no fixed size in megabytes. What the rules cap is a weight, and different kinds of transaction weigh different amounts for the same number of bytes, so the size a full block lands at moves with what people are sending.

  4. What does this mean for you?

    Fullness is what sets the price of sending. Space in a block is limited and buyers bid for it, so when blocks run near full, fees climb and slow payments wait. When there is slack, sending is cheap and near-instant.

    One thing to keep in mind about the older history. The way this space is measured changed in August 2017, so readings before then are the closest equivalent rather than the same measurement, and the step you can see around that date is a change of ruler, not a change in Bitcoin.

Understanding Bitcoin's Blocks

Where it stands today

Bitcoin's Blocks is 96.2% of the room in a block used as of .

Bitcoin writes its ledger in blocks, roughly one every ten minutes. Each block has a fixed budget of room, and transactions compete to get into it. That competition is the whole reason sending Bitcoin costs anything at all.

The budget is not a number of transactions and it is not really a number of megabytes either. It is a weight, and different kinds of transaction weigh different amounts for the same number of bytes. So a full block can be one size today and another size next month, depending on what people are sending, and any figure claiming a block holds a fixed number of payments has invented it.

Blocks do not arrive on a timetable. Finding one is a guessing game, so some days bring more than the 144 the ten-minute target implies and some bring fewer. The network corrects itself: about every two weeks the puzzle is retuned to drag the average back toward ten minutes.

One caution about the older history. The way this room is measured changed in August 2017, so readings before then are the closest equivalent rather than the same measurement. The step around that date is a change of ruler, not something that happened to Bitcoin.