The Metamask wallet allows access to four test networks:

  • Ropsten
  • Kovan
  • Rinkeby
  • Goerli

I'm curious:

  • What are the similarities/differences between them?
  • Which use cases are best for each network
  • Are there more than these listed above?

3 Answers 3




Ropsten (deprecated in 2022!)

  • Proof-of-Work (Ethash)
  • Supported by all clients until 2022
  • Will no longer receive protocol upgrades

Rinkeby (deprecated in 2022!)

  • Proof of Authority (Clique)
  • Supported by all clients until 2022
  • Will no longer receive protocol upgrades

Kovan (deprecated in 2019!)

  • Proof of Authority (Authority Round)
  • Supported by OpenEthereum and Nethermind only
  • Minimally maintained by the Gnosis/xDAI community

If you need a stable testnet with support on multiple clients go with Goerli. If you need to have conditions as close as possible to mainnet, but less stability than Goerli, choose Sepolia.

Detailed version below:



  • 4
    Great answer. Could you also tell us about the approximate size (in gigs) of each as of today ,please? It s v. important for people with a small hd :).
    – hartmut
    Commented Dec 17, 2017 at 21:53
  • Probably faucet.metamask.io doesn't working. Commented Feb 7, 2018 at 16:17
  • Update with Görly may be nice now. Commented Nov 27, 2018 at 11:54
  • @NicolasMassart feel free to edit the answer or send me what you want to add. Commented Nov 28, 2018 at 8:21
  • 1
    @medvedev1088 done. Note the distinct informations for chain id and network id even if values are similar, this is mostly for educational purpose as we'll have to explain why we have those two values one day and that they ca be different... Commented Nov 29, 2018 at 10:53

There are other (test-)networks as well, as described in this SO answer, copied here with their network id numbers:

  • 0: Olympic, Ethereum public pre-release testnet
  • 2: Morden, the public Ethereum testnet, now Ethereum Classic testnet (retired)
  • 3: Ropsten, the public proof-of-work Ethereum testnet (deprecated)
  • 4: Rinkeby, the public Geth Ethereum testnet (deprecated)
  • 5: Goerli, the fresh cross-client Ethereum testnet
  • 42: Kovan, the public OpenEthereum testnet (retired)
  • 77: Sokol, the public POA testnet
  • 99: POA, the public Proof of Authority Ethereum network
  • 1337: the local Geth development network
  • 11155111: Sepolia, the new public Ethereum testnet

As there's been more recent updates, wanted to also flag the latest on the Ethereum testnets - Goerli (proof of stake) is the only supported testnet on Ethereum after the recent merge. Rinkeby, Ropsten, and Kovan are all deprecated now.

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