<p>Miners (that is, the full node building the miner's blocks - which may be a pool) decide what they put in blocks.</p>

<p>Reasons <strong>for</strong> including more transactions:</p>

<ul>
<li>Earn the fees of transactions included.</li>
<li>Make the Bitcoin on-chain ecosystem more useful.</li>
</ul>

<p>Reasons <strong>against</strong> including more transactions:</p>

<ul>
<li>Larger blocks propagate more slowly through the network, giving them a slightly larger chance for being reorganized (as a competing simultaneous block may win).</li>
</ul>

CC BY-SA 3.0
2014-06-21T18:26:44.120Z
2014-06-21T18:26:44.120Z
Pieter Wuille
<p>What determines how many transactions end up in a given block? Blocks can have various numbers of transactions, so what decides how many are in a certain block? </p>

<transactions><blockchain><block>
What determines how many transactions end up in a given block?
user18220
# What determines how many transactions end up in a given block?

(Asked by: username_0 on 2014-06-21)

What determines how many transactions end up in a given block? Blocks can have various numbers of transactions, so what decides how many are in a certain block?

**Tags:** transactions, blockchain, block


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## 1 answers

### Answer by username_1 on 2014-06-21. Score: 5

Miners (that is, the full node building the miner's blocks - which may be a pool) decide what they put in blocks.

Reasons **for** including more transactions:

* Earn the fees of transactions included.
* Make the Bitcoin on-chain ecosystem more useful.

Reasons **against** including more transactions:

* Larger blocks propagate more slowly through the network, giving them a slightly larger chance for being reorganized (as a competing simultaneous block may win).


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