Incorrect DevEx Rate Percentage Update - 8.5% Claim Is Not Accurate 🥀☠️

Bug Reports Documentation Issues
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1

I noticed a discrepancy in the recent DevEx update information. According to Roblox, the DevEx rate increased by 8.5%, implying that the previous rate of 1 Robux = 0.0035 USD should now be 0.0038 USD.

However, the math does not support this:

Previous rate: 0.0035 USD
Claimed increase: 8.5% → 0.085

0.0035 · 0.085 = 0.0002975

0.0035 + 0.0002975 = 0.0037975

This means the new rate after an 8.5% increase would be 0.0037975 USD per Robux, not 0.0038. So, for 100,000 Robux:

100,000 · 0.0037975 = 379.75 USD

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If the rate were exactly 0.0038 USD, the actual percentage increase would be:

0.0038 - 0.0035 = 0.0003

0.0003 / 0.0035 = 0.085̅7̅1̅4̅2̅8̅

Converting to a percentage: 8.57̅1̅4̅2̅8̅5̅%

This shows the 8.5% figure is slightly inaccurate. The official DevEx documentation (Developer Exchange Help Page) should be updated to reflect the correct numbers so developers can calculate earnings accurately.

Page URL: https://en.help.roblox.com/hc/en-us/articles/13061189551124-Developer-Exchange-Help-and-Information-Page

6 Likes
2

A truly horrible mistake, please fix that

3

Reporting also this, the dev ex number is incorrect
Based on what it said, 10k robux convert just to 38 dollars

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4

Yes, according to the data Roblox announced at the RDC and on X (formerly Twitter), the actual amount should be 37.975 USD.

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5

New rate applies only to newly earned robux, robux earned before 10 AM PT on September 5 will go at the old rate

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6

It is 38$. They write it in the announcement. 8.5% was only for visual reason. And who normally call for decrease devex rate???

7

Thank you!! I was so upset that Roblox lied to us. Why can’t they just give us the accurate numbers? They’re always upsetting the community. jk I love you Roblox!

8

Hi @raskolibov .

Thanks for reaching out. I appreciate your attention to detail with these reports.

I don’t think there are any changes we can make on the help doc for this issue, since the help center doc doesn’t actually mention 8.5% percentage. It only mentions that there is a new rate and an old rate. As far as I can tell, all the example rates math on the support page check out.

Re: 8.5%, while I’m not part of our finance/policy/economy teams, there may well be some rounding involved with some of these conversions to present both an accurate and clean looking number for the announcement.

Thanks again, and have a great rest of your week :slight_smile:

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