Scroll L2 ZK-Rollup Gas Fee Calculator

Blast L2 Optimistic Rollup Engine

Tired of paying high transaction fees on congested networks?

Estimate your Blast L2 optimistic rollup gas costs instantly in your local currency across complex smart contract operations.

⚠️ Rollup Fee Model. Blast transaction fees combine minimal L2 execution gas with a flat estimated 38% L1 data batch submission allowance for Ethereum security.

Transaction Type / Complexity ETH L2 Transfer (~21,000 Gas) ERC-20 Token Transfer (~50,000 Gas) Thruster / DEX Swap (~120,000 Gas) Smart Contract / NFT Mint (~250,000 Gas) Custom Gas Limit

L2 Gas Limit (Units)

L2 Gas Price (Gwei)

Example ETH Price ($ USD)

Estimated Total Fee (ETH)

0.00000340 ETH

Estimated Total Fee (USD)

$0.01

Savings vs Mainnet (20 Gwei)

99.3% Cheaper

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Decoding Blast L2 Rollups & Layer-2 Gas Mechanics

Blast is an Ethereum Layer-2 optimistic rollup network featuring native yield mechanics for ETH and stablecoins. By processing user transactions off-chain and batching compressed data updates back to Ethereum mainnet, Blast combines high performance with low transaction overhead.

The Blast L2 Optimistic Rollup Gas Fee Calculator allows crypto users and developers to estimate execution expenses accurately under live L2 Gwei pricing conditions.

Governing Mathematical Formulas

This client-side Blast gas engine estimates fees using standard rollup equations, including a transparent adjustment for L1 security batch submission overhead:

• 1 Ether (ETH): Equivalency of 10⁹ Gwei (1,000,000,000 Gwei).
• L2 Execution Cost (Gwei): L2 Gas Limit × L2 Gas Price (Gwei)
• L1 Data Batch Allowance: This tool adds a flat 38% estimate to account for transaction batching publication costs on Ethereum mainnet.
• Total Estimated Fee (ETH): [L2 Execution Cost + L1 Data Batch Allowance] / 1,000,000,000
• Total Estimated Fee (USD): Total Estimated Fee (ETH) × Example ETH Price ($)

Worked Calculation Examples

Consider executing an ETH L2 Transfer requiring 21,000 Gas Units at an L2 gas price of 0.12 Gwei, with an example ETH Price of $3,200.00:

• L2 Execution Cost: $21,000 \times 0.12 \text{ Gwei} = 2,520 \text{ Gwei}$.
• L1 Data Batch Allowance (38% estimate): Adds an overhead factor of $957.6 \text{ Gwei}$, totaling $3,477.6 \text{ Gwei}$ ($0.00000348 \text{ ETH}$).
• Total Estimated Cost in Fiat USD: $0.00000348 \text{ ETH} \times \$3,200.00 = \mathbf{\$0.01}$.
• Savings Comparison: Compared against an assumed baseline Ethereum L1 mainnet transfer running at 20 Gwei, this reflects a ~99.3% reduction in transaction fees.

Frequently Asked Questions

1. Why are gas fees on Blast so low?

Blast aggregates multiple transactions off-chain into a single compressed batch before submitting them to Ethereum L1, drastically reducing individual costs.

2. What token is used for paying gas on Blast?

Native ETH is used to pay transaction gas fees on the Blast network, matching Ethereum L1 standards.

3. Are Blast gas fees volatile?

No. Blast maintains predictable fractional Gwei fees, changing only with network utilization shifts or mainnet calldata costs.

4. Are my fee calculations private?

Yes. All calculations execute locally inside your web browser using JavaScript logic. No wallet credentials or transaction inputs are sent to external servers.

Last updated: October 2026