# Calculate Duration in JSON input

**URL:** <https://discuss.elastic.co/t/calculate-duration-in-json-input/191691>\
**Category:** Kibana\
**Created:** [July 22, 2019, 5:24pm UTC](https://discuss.elastic.co/t/calculate-duration-in-json-input/191691 "2019-07-22T17:24:19Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![LizaD](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/lizad/32/51074_2.png) [@LizaD](https://discuss.elastic.co/u/LizaD)\
**Post date:** [July 22, 2019, 9:08pm UTC](https://discuss.elastic.co/t/calculate-duration-in-json-input/191691/2 "2019-07-22T21:08:50Z")

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Hi @scttwoods,

This appears similar to discuss post: [JSON Input arithmetic](https://discuss.elastic.co/t/json-input-arithmetic/191600/2)  
Try visualization time series TSVB using math aggregations. Also cc: @Marius_Dragomir to help further.

Thanks,  
Liza

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