Ethereum Developer Tools
Free, fast, browser-based utilities for everyday Ethereum work. No signup, nothing sent to a server, everything runs locally.
ETH Gas Fee Calculator
Live gas prices and the real cost of a transfer, swap or mint in ETH and USD.
Wei to ETH Converter
Convert between wei, gwei, szabo, finney and ETH with exact big-integer math.
Unix Timestamp Converter
Convert Unix epoch timestamps to dates and back, in UTC or local time.
Hex to Decimal Converter
Convert hex to decimal and binary, with 256-bit big-integer support.
Keccak-256 Hash Calculator
Hash text or hex with Keccak-256 and SHA3-256, plus the 4-byte selector.
Glamsterdam Countdown
Fork countdown, epochs per network, and which client versions are Glamsterdam-ready.
Ethereum Address Checksum Tool (EIP-55)
Validate addresses and convert them to EIP-55 checksummed form.
Run your code on the node
These tools run in your browser. When you need a real Ethereum node with no rate limits and sub-10ms RPC, deploy your container or script right next to one on BLAZED.sh.