How big is the Monero blockchain?

The Monero blockchain takes up a few hundred gigabytes of disk space for a full, unpruned copy, and it keeps growing. A pruned node, which removes some older data while still checking the network’s rules, usually needs roughly one-third as much space. For an exact current size, check a recently updated Monero network explorer and note whether it reports full or pruned storage.

What that space contains

The blockchain is Monero’s shared history of transactions, going back to its launch on April 18, 2014. A node is software that downloads this history, checks it, and shares valid transactions and blocks with other nodes.

Your node stores more than a simple list of payments. Its database includes transaction information, cryptographic proofs that help protect privacy, and supporting data needed to check the chain.

That is why two size figures can look different:

• Blockchain data size may describe the underlying blocks and transactions.
• Node database size describes the actual database stored on your drive.
• Recommended free space includes room for future growth and other files.

For setting up your computer, the database size and available disk space matter most.

Full versus pruned storage

An unpruned node keeps all historical blockchain data. It needs the most space and can share the complete history with other nodes.

A pruned node removes much of the older cryptographic proof data after checking it. It keeps the information needed to continue validating Monero, plus a portion of the older proofs to help the network.

Pruning typically cuts storage by about two-thirds. It does not mean you are trusting someone else to approve transactions.

One important catch: pruning an existing database does not necessarily make its file immediately smaller. The freed space can be reused internally. If you need to reclaim disk space, follow the current Monero instructions for creating or converting to a compact pruned database.

How much drive space you should plan for

Do not choose a drive that only just fits today’s blockchain. Monero targets one block about every two minutes, but blocks vary in size, so annual storage growth is not a fixed number.

For comfortable planning:

• Unpruned node: A dedicated 1 TB solid-state drive, or SSD, gives you useful room to grow.
• Pruned node: A 512 GB SSD offers generous headroom without needing to pin your setup to today’s exact database size.
• Leave additional space for your operating system, logs, and other applications.

These are practical capacity recommendations, not claims about the blockchain’s current size. An SSD also makes the initial download and verification much smoother than a mechanical hard drive.

What this means for solo mining and P2Pool

Running your own node for solo mining or P2Pool, a mining pool without a central operator, does not require an unpruned blockchain. A correctly configured pruned node can serve either setup.

P2Pool stores some additional data of its own, but Monero’s blockchain remains the main storage requirement. Mining through a service that supplies the node does not automatically require you to download it yourself.

The bottom line

Think hundreds of gigabytes, with room to grow, rather than one permanent size. For your own mining node, pruning is a practical way to save space without giving up independent transaction verification.