Gas Fee Calculator

Real-time transaction costs on Ethereum, Polygon, Arbitrum, Base and Optimism.

Created by: Renato Passos, Eng. de Software
Reviewed by: Renato Passos, Eng. de Software

Last updated: Apr 18, 2026

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Digital assets disclaimer. Cryptocurrencies are high-risk, extremely volatile assets. See full disclaimer

About this tool

Calculadora de custo de transações em redes EVM: Ethereum L1 + Polygon + 3 L2s (Arbitrum, Base, Optimism). Mostra em tempo real quanto custa uma transferência, swap, mint NFT ou operação DeFi complexa.

Frequently asked questions

De onde vem o gas price?

Lemos diretamente da RPC pública oficial de cada rede (eth_gasPrice). Preço do token via CoinGecko.

O custo em L2 é real?

É uma estimativa boa. L2 como Arbitrum cobra também um data fee pela publicação em L1; valores reais geralmente ficam 10-30% acima do mostrado.

Posso reduzir o gas?

Sim: escolher horários de baixa demanda, usar L2 (Base/Arbitrum/Optimism), consolidar operações em batches ou usar meta-transações.

Digital assets disclaimer

Cryptocurrencies are high-risk, extremely volatile assets. This calculator is not a recommendation to buy, sell or hold. We are not a broker-dealer, exchange or custodian. Use the data only as a market reference. Consult a tax professional for reporting obligations under IRS guidance (US, Form 8949 and Schedule D), HMRC (UK) or the Markets in Crypto-Assets Regulation — MiCA (EU) — and plan your risk exposure responsibly.

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