# Kibana - Calculate range of time like hours
**URL:** https://discuss.elastic.co/t/kibana-calculate-range-of-time-like-hours/290986
**Category:** Kibana
**Created:** [December 5, 2021, 1:44pm UTC](https://discuss.elastic.co/t/kibana-calculate-range-of-time-like-hours/290986 "2021-12-05T13:44:07Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@redsegsolucoes](https://discuss.elastic.co/u/redsegsolucoes)
#### Post date: [December 5, 2021, 1:44pm UTC](https://discuss.elastic.co/t/kibana-calculate-range-of-time-like-hours/290986/1 "2021-12-05T13:44:07Z")
I would like to know how to calculate dates inside Kibana, for example, (end\_date - start\_date),
How long does it take for a driver to get from city A to city B?
is possible to do this calculation inside Query DSL and extract hours to compare hours.
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### Author:  [@Felix\_Roessel](https://discuss.elastic.co/u/Felix_Roessel)
#### Post date: [December 7, 2021, 9:25pm UTC](https://discuss.elastic.co/t/kibana-calculate-range-of-time-like-hours/290986/2 "2021-12-07T21:25:47Z")
You can have a look into runtime fields. That helps to calculate the time diff between two date fields within the same document.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 4, 2022, 9:26pm UTC](https://discuss.elastic.co/t/kibana-calculate-range-of-time-like-hours/290986/3 "2022-01-04T21:26:30Z")
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