megaeth-gas

Gas estimator for MegaETH. Shows dual gas costs (compute + storage) and compares MegaETH vs Ethereum L1.

Note: MegaETH uses a dual gas model (compute + storage). The minimum gas per transaction is 60,000 (21k compute + 39k storage), not the standard 21,000 you expect from Ethereum.

Install

npx megaeth-gas

Or install globally:

npm install -g megaeth-gas
megaeth-gas

Why this exists

Gas on MegaETH works differently from standard EVM chains:

• Dual gas dimensions. Every transaction pays compute gas (21,000 intrinsic) plus storage gas (39,000 intrinsic). The minimum total is 60,000 gas, not 21,000.
• Extremely low base fee. MegaETH's base fee is 0.001 gwei, making transactions near-free in ETH terms.
• 10ms mini blocks. MegaETH produces EVM blocks every ~1 second, but mini blocks every ~10ms, enabling real-time applications.
• 10 billion block gas limit. Orders of magnitude higher throughput than Ethereum L1.

megaeth-gas estimates gas for common transaction types, shows the compute + storage breakdown, and compares costs against Ethereum L1.

Usage

# Estimate gas for all common transaction types
npx megaeth-gas

# Estimate a specific preset
npx megaeth-gas -p transfer
npx megaeth-gas -p swap

# Custom transaction
npx megaeth-gas --to 0x... --data 0x...

# Set gas limit multiplier (lower = tighter estimate)
npx megaeth-gas --multiplier 1.1

# Include USD pricing
npx megaeth-gas --eth-price 2500

# JSON output (for CI/CD)
npx megaeth-gas --json

# Skip Ethereum comparison
npx megaeth-gas --no-compare

# Custom RPC
npx megaeth-gas --rpc https://your-rpc.com

Presets

Preset	Description
transfer	Simple ETH send
erc20-transfer	ERC-20 token transfer
erc20-approve	ERC-20 token approval
swap	DEX swap (Uniswap-style)
nft-mint	NFT mint (ERC-721)
deploy	Contract deployment

MegaETH Gas Model

MegaETH introduces a dual gas model with two dimensions:

total_gas = compute_gas + storage_gas
cost = total_gas x gas_price

Compute Gas

Standard EVM execution cost. Intrinsic: 21,000 per transaction (same as Ethereum).

Storage Gas

Additional cost for state modifications. Intrinsic: 39,000 per transaction. Storage-heavy operations (like zero-to-nonzero SSTORE) incur additional storage gas.

Per-Transaction Resource Limits

• Compute: 200M gas
• Data: 12.5MB
• KV updates: 500K
• State growth: 1K slots

The --multiplier flag controls buffer above the estimate:

• 1.0 = exact estimate (risky, may fail)
• 1.1 = 10% buffer (tight)
• 1.2 = 20% buffer (default, safe)
• 1.5 = 50% buffer (generous)

Programmatic API

import { estimateGas, compareGas } from "megaeth-gas";

const estimate = await estimateGas(
  { to: "0x...", data: "0x..." },
  { megaethRpc: "https://mainnet.megaeth.com/rpc" }
);

console.log(estimate.totalGas);    // Total gas (compute + storage)
console.log(estimate.computeGas);  // Compute gas component
console.log(estimate.storageGas);  // Storage gas component

Part of the MegaETH Developer Toolkit

Tool	What it does
megaeth-audit	Catch EVM incompatibilities and dual gas model gotchas in your Solidity contracts
megaeth-gas (this tool)	Estimate gas costs on MegaETH vs Ethereum

License

MIT

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Built for megaeth.systems