InstantQR
⛽ EVM Gas • ⚡ Live Estimates • 🔒 Privacy-First

EVM Gas Fee Estimator

Estimate live gas fees for Ethereum, BNB Smart Chain, Base, Arbitrum, Optimism, Polygon, Avalanche, Gnosis, Celo, Linea, Scroll, zkSync Era, and KCC. This tool uses EIP-1559 first and falls back to legacy gasPrice when needed.

Tip: public RPC endpoints can be rate-limited or temporarily unavailable. If results fail, try your own Alchemy, Infura, QuickNode, or another provider endpoint.
Common values: 21,000 transfer, 80,000–200,000 swaps, 200,000+ complex transactions.
This tool sends requests directly from your browser to the RPC endpoint you choose.
Status: Ready to fetch gas data.
Last updated: —

FAQ

How do gas fees work on EVM networks?

Most EVM networks use a gas model where a base fee or network gas price changes with demand. Many chains support EIP-1559 fee estimation, while others rely on legacy gasPrice methods.

Which networks does this tool support?

This estimator supports major EVM-compatible networks including Ethereum, BNB Smart Chain, Base, Arbitrum, Optimism, Polygon, Avalanche C-Chain, Gnosis, Celo, Linea, Scroll, zkSync Era, and KCC.

Does it support Bitcoin, Litecoin, or Monero?

No. Bitcoin, Litecoin, and Monero do not use the EVM gas model or EVM JSON-RPC methods such as eth_feeHistory. They require their own fee estimation logic.

Do you store my RPC URL or input?

No. This page runs in your browser and sends requests directly to the RPC endpoint you select or paste. InstantQR does not intentionally store your RPC input on a server.

Why can a public RPC fail?

Public endpoints may be overloaded, rate-limited, blocked by browser extensions, VPNs, or temporary provider issues. If that happens, try your own provider endpoint.