# Transaction.duration.us

**URL:** <https://discuss.elastic.co/t/transaction-duration-us/162332>\
**Category:** APM\
**Created:** [December 28, 2018, 9:54am UTC](https://discuss.elastic.co/t/transaction-duration-us/162332 "2018-12-28T09:54:27Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![TrumanDu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/trumandu/32/35182_2.png) [@TrumanDu](https://discuss.elastic.co/u/TrumanDu)\
**Post date:** [December 28, 2018, 9:54am UTC](https://discuss.elastic.co/t/transaction-duration-us/162332/1 "2018-12-28T09:54:28Z")

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[transaction.duration.us](https://www.elastic.co/guide/en/apm/server/6.5/exported-fields-apm-transaction.html#_duration_fields_2)

Total duration of this transaction, in **microseconds**.

my data is ![image](https://us1.discourse-cdn.com/elastic/original/3X/b/3/b30f5bd681e498b996ba4a11ef89df6a18325828.png)

but apm ui  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/3/7/37552a289952273596cf57321ee85daf4aab2fb3.png)

How should I understand?

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<div class="post-metadata">

**Author:** ![simitt](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/simitt/32/106406_2.png) [@simitt](https://discuss.elastic.co/u/simitt)\
**Post date:** [January 2, 2019, 9:34am UTC](https://discuss.elastic.co/t/transaction-duration-us/162332/2 "2019-01-02T09:34:17Z")

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Hi,  
the APM Kibana Index Pattern has a specific formatting defined to show `duration` in `milliseconds` in _discover_ . This means the values you see in discover and the APM UI are in fact milliseconds, although the field name states microseconds.  
If you look at the _json_ version of the data in discover, you see the actually stored value (in microseconds).

I created an [issue](https://github.com/elastic/apm-server/issues/1716) in the APM Server repo to look into getting rid of this formatting as this can indeed be very confusing.

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<div class="post-metadata">

**Author:** ![TrumanDu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/trumandu/32/35182_2.png) [@TrumanDu](https://discuss.elastic.co/u/TrumanDu)\
**Post date:** [January 3, 2019, 1:00am UTC](https://discuss.elastic.co/t/transaction-duration-us/162332/3 "2019-01-03T01:00:39Z")

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ack,thanks for you reply

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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:** [January 23, 2019, 9:00pm UTC](https://discuss.elastic.co/t/transaction-duration-us/162332/4 "2019-01-23T21:00:48Z")

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