2 Services from gas.genexxis.com

Returns the USD cost of a transaction (by gas units) across Ethereum, Base, Arbitrum, OP Mainnet, Polygon, and BNB Chain sorted cheapest-first, with slow/standard/fast speed tiers.

Returns current base fee, slow/standard/fast priority fees in gwei, and USD costs for native transfer, ERC-20 transfer, and Uniswap swap (including L1 data fee on rollups) for a specified EVM chain.