OP Mainnet Gas Tracker
Live OP Mainnet gas prices in gwei and what common transactions cost in dollars, checked every 5 minutes.
Updated 4 min ago · block 159,369,315
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What a transaction costs on OP Mainnet now
| Action | Gas used | Slow | Standard | Fast |
|---|---|---|---|---|
| Send ETH | 21,000 | < $0.0001 | < $0.0001 | < $0.0001 |
| Send an ERC-20 token | 65,000 (typical) | < $0.0001 | < $0.0001 | < $0.0001 |
| Token swap on a DEX | 150,000 (typical) | < $0.0001 | < $0.0001 | < $0.0001 |
| Mint an NFT | 120,000 (typical) | < $0.0001 | < $0.0001 | < $0.0001 |
ETH price $2,042.3 from CoinGecko. Gas used for sending ETH is fixed at 21,000; other actions depend on the contract and are typical values. On OP Mainnet, an L1 data fee is added on top of these costs. Calculate a custom amount →
OP Mainnet gas price, last 24 hours
How fees work on OP Mainnet
OP Mainnet is a layer 2 network where fees are paid in ETH. A transaction's total cost combines an execution gas fee, an L1 data fee, and on chains that enable it, an operator fee. OP Mainnet is EVM equivalent, so a transaction that uses 100,000 gas on Ethereum uses the same 100,000 gas on OP Mainnet. The difference is that the gas price on the layer 2 is much lower.
The execution gas fee works like Ethereum's EIP-1559 model. Each transaction pays a base fee, which is the minimum price needed to get into a block, plus an optional priority fee that helps it get included faster. The base fee changes block by block based on how full recent blocks were. You set a max fee and a max priority fee in your wallet, just as you would on Ethereum.
The L1 data fee exists because data for every OP Mainnet transaction is published to Ethereum. Since the Fjord upgrade, the fee uses a FastLZ estimate of the compressed transaction size. That size is multiplied by a scaled L1 fee that combines Ethereum's base fee, weighted by a base fee scalar, and Ethereum's blob base fee, weighted by a blob fee scalar. These inputs update with each Ethereum block.
The operator fee was added in the Isthmus upgrade so chains can charge a fee based on gas used plus a constant. Under Jovian, the formula is the operator fee constant plus gas used times the operator fee scalar times 100. Deposit transactions, which move funds from Ethereum into OP Mainnet, never pay an operator fee.
Fees on OP Mainnet can rise from local demand, which lifts the L2 base fee, or from Ethereum congestion, which lifts the L1 data fee through both the base fee and blob base fee inputs. Those L1 inputs update with every Ethereum block and move by at most 12.5% between updates, so the L1 data fee usually changes gradually. When speed matters, the OP docs note that the sequencer executes transactions with a higher priority fee first.
Sources: Optimism: Transaction fees · Ethereum EIPs: EIP-4844 Shard Blob Transactions. Checked Sep 26, 2026.
How we measure OP Mainnet gas
Every 5 minutes our server calls eth_feeHistory for the last 20 blocks on a live public OP Mainnet RPC endpoint (last: gateway.tenderly.co). Slow, standard and fast are the next block’s base fee plus the 25th, 50th and 75th percentile of priority tips paid in those blocks. Block use: 36% of the gas target on average.
What is a gas fee? · What is gwei? · OP Mainnet RPC endpoints
OP Mainnet gas FAQ
What is the current OP Mainnet gas price?
At the last check the standard gas price on OP Mainnet was 0.0000 gwei (base fee 0.0000 gwei plus a priority tip). It updates every 5 minutes.
What is gwei?
Gwei is a billionth of one ETH. Gas prices are quoted in gwei; your fee is gas used × gas price.
Why do gas prices change?
On EIP-1559 networks the base fee rises when blocks are fuller than the target and falls when they are emptier, so busy periods cost more.
Is the gas price the full fee on OP Mainnet?
No. OP Mainnet is an L2: besides the L2 execution gas shown here, each transaction pays an L1 data fee for posting its data to Ethereum. Your wallet shows the total before you sign.
How do you get these numbers?
Every 5 minutes we call eth_feeHistory for the last 20 blocks on a live public RPC endpoint. Slow, standard and fast are the next base fee plus the 25th, 50th and 75th percentile of priority tips paid in those blocks.
How this page works
Sources: OP Mainnet public RPC (eth_feeHistory), CoinGecko. Data as of Nov 10, 07:03 PM UTC.
Not affiliated with any project listed. Educational content, not financial advice.