Firsthand Bitcoin · Data · Bitcoin miners

Blockchain size

The size of the full bitcoin blockchain in gigabytes.

770.2 GB on Sep 20, 2026, against 688.2 GB a year earlier.

Everything a full node stores. It grows by roughly a block’s worth every ten minutes, a little under 100 GB a year at today’s block sizes.

Blockchain size, month by month

Month	Blockchain size
2025-10	696.7 GB
2025-11	703.3 GB
2025-12	710.1 GB
2026-01	716.7 GB
2026-02	723.4 GB
2026-03	730.2 GB
2026-04	737.1 GB
2026-05	744.3 GB
2026-06	751.1 GB
2026-07	758.0 GB
2026-08	765.2 GB
2026-09	770.2 GB

Questions

What is blockchain size today?

770.2 GB as of September 21, 2026.

How has it changed over the past year?

A year ago it was 688.0 GB; today it is 770.2 GB, a change of +11.9%.

What is the highest blockchain size on record?

770.2 GB, on September 21, 2026.

How is this chart calculated?

Everything a full node stores. It grows by roughly a block’s worth every ten minutes, a little under 100 GB a year at today’s block sizes.

By year

2026 · 2025 · 2024 · 2023 · 2022 · 2021 · 2020 · 2019 · 2018 · 2017 · 2016 · 2015 · 2014 · 2013

Data: CSV · JSON. Embed: <iframe src="https://firsthandbitcoin.com/embed/blockchain-size" width="100%" height="420"></iframe>. Free to reuse with a link to this page.

Updated daily. Latest data 2026-09-22.

Network hashrate · Mining difficulty · Difficulty adjustments · Fees paid to miners · Transactions per day · Mempool · Active addresses · UTXO set · Block size and transactions per block · Blocks mined per day · Median confirmation time · Miner revenue per transaction