6

It looks like many Chainlink feed aggregators have 8 decimals of precision:

  • ETH/USD, which returns 140330173736 = $1,403.30173736
  • BTC/USD, which returns 3696759888474 = $36,967.59888474

I found the contracts above on feeds.chain.link.

Do all Chainlink feed aggregators have 8 decimals of precision?

1 Answer 1

12

Non-ETH pairs: 8 decimals

ETH pairs: 18 Decimals

Hence, ETH/USD is a non-ETH pair, so it has 8. But if it were USD/ETH, it would have 18

For reference

EDIT: Each contract has a decimals function you can call to see exactly how many it has.

2
  • Maybe I missed it but I didn't see this in the documentation anywhere
    – Ritzy Dev
    Jan 2, 2023 at 1:42
  • 1
    Ideally you call the decimals function on the contract itself though, the above is just in general. Jan 4, 2023 at 0:56

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