Know exactly what your Robux are worth, before you spend or sell them.
Two straight-answer tools in one place: work out Roblox’s 30% marketplace fee on a sale, or convert Earned Robux to USD through DevEx. No account, math runs entirely in your browser.
Formula: payout = listing price × 0.7
Minimum 30,000 Earned Robux required to submit a DevEx request.
Robux behaves like three different currencies
The phrase “Robux calculator” gets used for three genuinely different calculations, and mixing them up is the most common pricing mistake on Roblox. Here’s the breakdown, using 1,000 Robux as the reference point.
Purchase pricing varies by bundle size and region. DevEx figure uses the current standard rate — legacy and US 18+ rates are available in the calculator above.
Full breakdowns for each calculation
Common questions about Robux math
What does a Robux calculator actually calculate?
Most tools grouped under “Robux calculator” cover three separate things: the 30% marketplace fee on player-to-player sales, DevEx cash-out value, and the price of buying Robux from Roblox. This page keeps them as separate calculators so each stays accurate.
Is Robux the same value for buying and for cashing out?
No. Buying Robux from Roblox costs roughly $0.0125 per Robux depending on the bundle. Cashing out Earned Robux through DevEx pays the standard rate of $0.0038 per Robux — a different transaction entirely.
Does the marketplace tax apply to every transaction?
The 30% fee applies to marketplace sales between users — avatar items, clothing, game passes, developer products. It doesn’t apply when you buy Robux directly from Roblox.
This tool is independent and not endorsed, sponsored, or affiliated with Roblox Corporation. Robux, Roblox, and DevEx are trademarks of Roblox Corporation. Figures are estimates for planning purposes — refer to Roblox’s official terms for exact, current rates.