# How do I calculate license costs for the Carbon Impact app?

**URL:** <https://community.dynatrace.com/t/how-do-i-calculate-license-costs-for-the-carbon-impact-app/48579>\
**Category:** Open Q&A\
**Tags:** business-analytics\
**Created:** [October 28, 2024, 7:56am UTC](https://community.dynatrace.com/t/how-do-i-calculate-license-costs-for-the-carbon-impact-app/48579 "2024-10-28T07:56:25Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Gosia\_Murawska](https://avatars.discourse-cdn.com/v4/letter/g/2bfe46/32.png) [@Gosia\_Murawska](https://community.dynatrace.com/u/Gosia_Murawska)\
**Post date:** [October 28, 2024, 7:56am UTC](https://community.dynatrace.com/t/how-do-i-calculate-license-costs-for-the-carbon-impact-app/48579/1 "2024-10-28T07:56:25Z")

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Is there a rule of thumb for calculating the cost of business events generated by the app?

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**Author:** ![gary\_kaiser](https://avatars.discourse-cdn.com/v4/letter/g/f04885/32.png) [@gary\_kaiser](https://community.dynatrace.com/u/gary_kaiser)\
**Post date:** [October 28, 2024, 7:57am UTC](https://community.dynatrace.com/t/how-do-i-calculate-license-costs-for-the-carbon-impact-app/48579/2 "2024-10-28T07:57:05Z")

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Each bizevent generated by the Carbon Impact app for each hour and for each host instrumented has a size of 697 bytes (be aware that this may increase a bit as the bizevents will include more metadata). So if a customer has 1000 hosts instrumented, this means 0.000697 GB per hour, so at the end of a month  (24hours x 30days) is 0.50184 GB a month. Assuming a 1:1:8 (ingest-store-query) proportion would be easy to forecast how much will impact the customer. The reality: a big financial services company with 27K instrumented hosts is paying around $100 monthly. A bargain for the value provided!