How is Merkle proof gas cost calculated?

Each keccak256 hash in a Merkle proof costs ~6 gas. A tree with 10,000 leaves requires ~14 proof elements. Total verification ≈ 14 × 6 gas + base transaction costs (~21,000 gas).

Why do NFT projects use Merkle trees for whitelists?

Storing 10,000 wallet addresses on-chain costs ~$50,000+ in gas. A Merkle tree stores only the 32-byte root on-chain, and users prove inclusion at mint time, reducing storage costs by 99%.

Merkle Proof Verification Cost Calculator

Estimate the gas cost of verifying Merkle proofs in Ethereum smart contracts. Calculate proof length, hashing operations, and total gas for whitelist mints and airdrop claims.

Networking

Algorithms

Binary & Number

Systems

Dev Metrics

IP Subnet Calculator

IP Address

CIDR Prefix

Network

192.168.1.0

Broadcast

192.168.1.255

Subnet Mask

255.255.255.0

First Host

192.168.1.1

Last Host

192.168.1.254

Usable Hosts

254

Binary breakdown:

IP: 11000000.10101000.00000001.00000000

Mask: 11111111.11111111.11111111.00000000

Net: 11000000.10101000.00000001.00000000

How to Use

Enter the values for the scenario you are assessing. Estimate the gas cost of verifying Merkle proofs in Ethereum smart contracts. Calculate proof length, hashing operations, and total gas for whitelist mints and airdrop claims. Use the merkle proof cost result to inform your calculation.

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