Only Earned Robux can be cashed out, and you need 30,000 of them. Robux you bought or received through a transfer cannot be. See the DevEx calculator for mixed balances.
FAQ
How much is 30,000 Robux in USD?
$114.00 through DevEx at the standard rate of $0.0038 per Earned Robux, if they are Earned Robux. Buying 30,000 Robux costs roughly $249.99 to $332.22.
Can I cash out 30,000 Robux?
Yes, if they are Earned Robux and you meet the DevEx requirements. The minimum is 30,000.
Why is buying so much more than cashing out?
Players pay about $0.008 to $0.011 per Robux, while creators receive 70% of sales and cash out at $0.0038 per Earned Robux.