# How to calculate Transformer KVA Rating?

**URL:** <https://forumautomation.com/t/how-to-calculate-transformer-kva-rating/14335>\
**Category:** Electrical\
**Tags:** transformer\
**Created:** [August 21, 2026, 2:16pm UTC](https://forumautomation.com/t/how-to-calculate-transformer-kva-rating/14335 "2026-08-21T14:16:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Rabert](https://forumautomation.com/user_avatar/forumautomation.com/rabert/32/6784_2.png) [@Rabert](https://forumautomation.com/u/Rabert)\
**Post date:** [August 21, 2026, 2:16pm UTC](https://forumautomation.com/t/how-to-calculate-transformer-kva-rating/14335/1 "2026-08-21T14:16:11Z")

</div>

## How to calculate Transformer KVA Rating?

Learn how to calculate the required transformer kVA rating using load power, voltage, current, and power factor. A quick guide for transformer selection and electrical system design.

 ![file_0000000070948208a9c7c2fda14d1655](https://cdn.forumautomation.com/original/2X/d/d8b37eaf5dacd76867cf5fee928fcd0c72fdf6dc.jpeg)