Ethereum finality time
As of June 11, 2026, Ethereum finality time is 15.9 min at the median (p50, 24h window), with 18.4 min at p90 and 19.0 min at p99. Ethereum ranks #8 of 10 chains measured on this benchmark.
Ethereum finality time is 15.9 min (p50, 24h). Casper FFG finalizes a checkpoint two epochs after it is justified, where each epoch is 32 slots of 12 seconds, the documented 12.8-minute target. Finality is deterministic once reached, but reorgs of unfinalized blocks remain possible inside the two-epoch window. Measured by polling `eth_getBlockByNumber("finalized")` against `latest` every 10 seconds and reporting the timestamp delta.
How Ethereum compares
Live p50 over the last 24 hours across every chain on this benchmark, ranked lowest first.
Methodology, charts and the full ledger live on the Fastest L1 blockchain finality, live across 11 chains page. Raw data: JSON endpoint.