Bridge gas: the network part of a deposit
Only the Ethereum network fee of a deposit through each rollup's official bridge, from real deposits. Bridge fees, aggregator quotes and withdrawal steps are not included.
Bridge deposit gas: no data yet. We show nothing rather than a guess.
Sampled from real deposits
All transaction typesFees on the layer 2s
Questions and answers
What does bridging ETH to a layer 2 cost?
Through an official bridge, mainly the Ethereum gas of the deposit transaction, shown above at today's gas price. Third-party bridges and aggregators add their own fee and route; compare those on their own sites.
Why is withdrawing from a layer 2 not listed?
A withdrawal through an official optimistic-rollup bridge takes several steps over days, each with its own Ethereum transaction. Those steps have not been sampled yet, so no figure is shown.