zkSync Era ZK-Rollup Gas Engine

zkSync Era L2 ZK-Rollup Gas Fee Calculator

Estimate transaction expenses on zkSync Era scaling networks in Gwei, Ether (ETH), and USD currency across token transfers, swaps, and smart contracts.

⚠️ ZK-Rollup Fee Model. zkSync Era transaction fees combine highly efficient zero-knowledge execution gas with a flat estimated 30% L1 state publication allowance.

Transaction Type / Complexity ETH L2 Transfer (~21,000 Gas) ERC-20 Token Transfer (~50,000 Gas) SyncSwap / Mute 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)

0.00000683 ETH

Estimated Total Fee (USD)

$0.02

Savings vs Mainnet (20 Gwei)

98.9% Cheaper

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Decoding zkSync Era ZK-Rollups & Layer-2 Gas Mechanics

zkSync Era is an advanced Layer-2 scaling network built on ZK-Rollup technology. By leveraging cryptographic validity proofs instead of fraud proofs, zkSync Era verifies batches of transactions mathematically on Ethereum mainnet, providing immediate finality and maximum security at minimal costs.

The zkSync Era L2 ZK-Rollup Gas Calculator allows traders and developers to estimate exact execution expenses transparently under live L2 Gwei operating environments.

Governing Mathematical Formulas

This client-side zkSync Era gas engine estimates fees using standard ZK-rollup scaling equations, including a transparent adjustment for L1 state publication 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 Publication Allowance: This tool adds a flat 30% estimate to account for cryptographic proof verification and state diff data publication on Ethereum mainnet.
• Total Estimated Fee (ETH): [L2 Execution Cost + L1 Publication 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 0.25 Gwei, with an example ETH Price of $3,200.00:

• L2 Execution Cost: $21,000 \times 0.25 \text{ Gwei} = 5,250 \text{ Gwei}$.
• L1 Publication Allowance (30% estimate): Adds an overhead factor of $1,575 \text{ Gwei}$, totaling $6,825 \text{ Gwei}$ ($0.00000683 \text{ ETH}$).
• Total Estimated Cost in Fiat USD: $0.00000683 \text{ ETH} \times \$3,200.00 = \mathbf{\$0.02}$.
• Savings Comparison: Compared against an assumed baseline Ethereum L1 mainnet transfer running at 20 Gwei, this reflects a ~98.9% reduction in transaction fees.

Frequently Asked Questions

1. Why are gas fees on zkSync Era different from Optimistic Rollups?

zkSync Era uses ZK-proofs, which require complex cryptographic proof generation but publish significantly smaller state data diffs back to L1, lowering long-term data footprint costs.

2. What token is used for paying gas on zkSync Era?

Native ETH is used to pay transaction gas fees on zkSync Era, with native account abstraction enabling fee payments in select ERC-20 tokens as well.

3. Are zkSync Era gas fees fixed?

No. L2 gas prices vary dynamically depending on network computational load and underlying Ethereum mainnet data gas price fluctuations.

4. Are my fee calculations private?

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

Last updated: October 2026