About RBXCalc

RBXCalc is a small set of free calculators for Roblox creators. Use it to see what you keep after Roblox’s marketplace cut, and what Earned Robux is worth at the published DevEx rates.

Not affiliated with Roblox

RBXCalc is an independent site. It is not affiliated with, endorsed by, or sponsored by Roblox Corporation. Always confirm fees and DevEx rules on Roblox Creator Hub before you price a listing or submit a cash-out.

What we built

Robux Tax Calculator — game pass and trade 70/30 math with Roblox’s floor rounding, plus UGC in-experience and catalog share.
DevEx Calculator — Earned Robux to USD at the standard, legacy, and US 18+ rates.

How the numbers are sourced

The tax tool follows Creator Hub marketplace fee documentation: a flat 30% platform fee on game passes and developer products, progressive creator share on Marketplace avatar items, and the 30/40/30 split on in-experience UGC. Payouts are floored to whole Robux.

The DevEx tool uses the published exchange rates ($0.0038 standard, $0.0035 legacy, $0.0054 US 18+ as of August 2026). Roblox can change those rates. We update the tools when official docs move.

Privacy

Both calculators run in your browser. Amounts you type are not sent to our server to produce the result. See the privacy policy for cookies and hosting.

Get in touch

Found a wrong figure or want a new tool? Use the contact page.