# Wrong format for duration in milliseconds
**URL:** https://discuss.elastic.co/t/wrong-format-for-duration-in-milliseconds/344414
**Category:** Kibana
**Created:** [October 4, 2023, 4:11pm UTC](https://discuss.elastic.co/t/wrong-format-for-duration-in-milliseconds/344414 "2023-10-04T16:11:18Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@desna](https://discuss.elastic.co/u/desna)
#### Post date: [October 4, 2023, 4:11pm UTC](https://discuss.elastic.co/t/wrong-format-for-duration-in-milliseconds/344414/1 "2023-10-04T16:11:19Z")
I have a property that represents duration in milliseconds (type _Long_), for example 1204172350 is 1,99 weeks (or 13,94 days). From Kibana index patterns I've configured my field with a format _duration_, input format: _milliseconds_ and for output format I'm using _Human-readable (precise)_.
The problem is that Kibana formats 1204172350ms into 2.86 weeks 🤯
Even in the samples table there is an input 923528271 and output 2.43 w when 923528271 ms is 1,53 weeks.
Could someone explain me how this works ?
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### Author:  [@jughosta](https://discuss.elastic.co/u/jughosta)
#### Post date: [October 19, 2023, 9:48am UTC](https://discuss.elastic.co/t/wrong-format-for-duration-in-milliseconds/344414/2 "2023-10-19T09:48:08Z")
Hi @desna,
Yes, looks like a bug. Thanks for reporting!
Created a Github issue [[Discover] Wrong formatting for duration in milliseconds with human-readable precise format · Issue #169351 · elastic/kibana · GitHub](https://github.com/elastic/kibana/issues/169351)
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 16, 2023, 9:48am UTC](https://discuss.elastic.co/t/wrong-format-for-duration-in-milliseconds/344414/3 "2023-11-16T09:48:22Z")
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