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Ethereum Calculator
ETH ↔ fiat, wei ↔ ETH, gas fee estimate.
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Frequently asked questions
What are Gwei and Wei?
Gwei = 10⁻⁹ ETH (billionth). Wei = 10⁻¹⁸ ETH (smallest). Gas fees commonly quoted in Gwei.
Typical gas fee?
Simple transfer: 20–50 Gwei × 21,000 gas ≈ 0.0004–0.001 ETH. NFT mint: 100K+ gas. Complex DeFi: 300K–500K gas.
Layer 2s — cheaper?
Arbitrum, Optimism, Polygon: 50–100× cheaper than Ethereum mainnet. Use them for small transactions.
Does ETH have supply cap?
No hard cap, but post-Merge (Sep 2022), issuance is slow + EIP-1559 burns fees. ETH is slightly deflationary in periods of high usage.