Ethereum addresses don't have a format apart from the length and 0x prefix. As a safety mechanism some wallets will require it be formatted with upper- and lowercase letters as a checksum. For the Ethereum network there's no difference between the two.
You can convert the address by entering it in Etherscan
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Ethereum (ETH) Blockchain Explorer
Etherscan allows you to explore and search the Ethereum blockchain for transactions, addresses, tokens, prices and other activities taking place on Ethereum (ETH)etherscan.io
Thank you very much
