<p>It connects to the api of the exchange and returns the traded volume. </p>

<p>The volume of the exchange is the sum of all coin's volume in that exchange that is returned from the exchange API.</p>

<p>The volume of the coin is the sum of that coin's traded volume that is returned from all exchange's api.</p>

CC BY-SA 3.0
2018-01-13T12:41:34.400Z
Yeah, this seems to be more logical
SpiralDev
CC BY-SA 3.0
2018-01-13T11:01:53.130Z
2018-01-13T11:01:53.130Z
idrispendisbey
<p>Does Coinmarketcap read all  trade history from the APIs of all exchanges and sums them up to calculate overall 24h volume? Or Does it retrieve it directly from specific coin's api?</p>

<trading><volume>
How does Coinmarketcap calculate volume?
SpiralDev
# How does Coinmarketcap calculate volume?

(Asked by: username_0 on 2018-01-13)

Does Coinmarketcap read all trade history from the APIs of all exchanges and sums them up to calculate overall 24h volume? Or Does it retrieve it directly from specific coin's api?

**Tags:** trading, volume


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## 1 answers

### Answer by username_1 on 2018-01-13. Score: 1 | Accepted answer

It connects to the api of the exchange and returns the traded volume.

The volume of the exchange is the sum of all coin's volume in that exchange that is returned from the exchange API.

The volume of the coin is the sum of that coin's traded volume that is returned from all exchange's api.

> **Comments:**
> **username_0**: Yeah, this seems to be more logical  

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