# Calculate conversion ratio of time series with elasticsearch

**URL:** <https://discuss.elastic.co/t/calculate-conversion-ratio-of-time-series-with-elasticsearch/35475>\
**Category:** Elasticsearch\
**Created:** [November 24, 2015, 5:26pm UTC](https://discuss.elastic.co/t/calculate-conversion-ratio-of-time-series-with-elasticsearch/35475 "2015-11-24T17:26:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![ebuildy](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/ebuildy/32/6070_2.png) [@ebuildy](https://discuss.elastic.co/u/ebuildy)\
**Post date:** [November 24, 2015, 5:26pm UTC](https://discuss.elastic.co/t/calculate-conversion-ratio-of-time-series-with-elasticsearch/35475/1 "2015-11-24T17:26:53Z")

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I am not sure if it's possible with aggregation, but let's ask to the community!

My documents:

```
{
    "user" : 1,
    "event" : "search"
},
{
    "user" : 1,
    "event" : "click"
},
{
    "user" : 2,
    "event" : "search"
}

```

I want to calculate the conversion "search" ==\> "click", by day. Here the result is:

```
{
  "time" : "?",
  "rate" : "50%"
}

```

I achieved this already by grouping events by user, but I am curions if it's possible to do with data formatted like this.

Thanks you,

Tom

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:36pm UTC](https://discuss.elastic.co/t/calculate-conversion-ratio-of-time-series-with-elasticsearch/35475/2 "2017-07-05T23:36:13Z")

</div>