# Arithmetical operations on fields?

**URL:** <https://discuss.elastic.co/t/arithmetical-operations-on-fields/87446>\
**Category:** Beats\
**Tags:** metricbeat\
**Created:** [May 29, 2017, 12:38pm UTC](https://discuss.elastic.co/t/arithmetical-operations-on-fields/87446 "2017-05-29T12:38:18Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![fbonningues](https://avatars.discourse-cdn.com/v4/letter/f/e9a140/32.png) [@fbonningues](https://discuss.elastic.co/u/fbonningues)\
**Post date:** [May 29, 2017, 12:38pm UTC](https://discuss.elastic.co/t/arithmetical-operations-on-fields/87446/1 "2017-05-29T12:38:18Z")

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Hi,

I currently using metricbeat-5.4.  
I monitor some metrics and I add some fields on documents but can I make some arithmetical operations on fields ?

Thanks

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**Author:** ![tudor](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tudor/32/3753_2.png) [@tudor](https://discuss.elastic.co/u/tudor)\
**Post date:** [May 29, 2017, 1:03pm UTC](https://discuss.elastic.co/t/arithmetical-operations-on-fields/87446/2 "2017-05-29T13:03:21Z")

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You can do it on the Kibana side using the new [Time Series Visual Builder](https://www.elastic.co/guide/en/kibana/current/time-series-visual-builder.html).

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<div class="post-metadata">

**Author:** ![fbonningues](https://avatars.discourse-cdn.com/v4/letter/f/e9a140/32.png) [@fbonningues](https://discuss.elastic.co/u/fbonningues)\
**Post date:** [May 29, 2017, 3:12pm UTC](https://discuss.elastic.co/t/arithmetical-operations-on-fields/87446/3 "2017-05-29T15:12:46Z")

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OK but can I add modified fields on my documents ?

We use these data in Grafana Dashboards so I want to make operations on some fields in order to use them in Grafana

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<div class="post-metadata">

**Author:** ![tudor](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/tudor/32/3753_2.png) [@tudor](https://discuss.elastic.co/u/tudor)\
**Post date:** [May 29, 2017, 4:29pm UTC](https://discuss.elastic.co/t/arithmetical-operations-on-fields/87446/4 "2017-05-29T16:29:21Z")

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In the elastic stack we prefer to do calculations on the querying side, but if you really need to compute new fields at the ingestion time, I'd recommend checking out the [Ingest Node](https://www.elastic.co/guide/en/elasticsearch/reference/master/ingest.html) functionality of Elasticsearch, especially the Script processor.

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<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:** [June 26, 2017, 4:29pm UTC](https://discuss.elastic.co/t/arithmetical-operations-on-fields/87446/5 "2017-06-26T16:29:24Z")

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