How to Buy Robux
On the computer
Go to www.roblox.com/upgrades/robux using a web browser. If you're not logged in, click Log In in the top right corner of the page to log in now.
If you don't have a credit/debit card, you can use cash at any store that sells Roblox or Rixty cards.
Go to the Roblox cards page (www.roblox.com/gamecards) to find a store near you that sells Roblox cards, or use Rixty's location finder (www.rixty.com/wheretobuy) and find the nearest place that sells them. Rixty card.
Click on the denomination next to the amount of Robux you want to buy. A list of payment methods will appear.
Select a payment method and click Continue .
Enter payment information. If you choose to pay by credit/debit card, enter your card information. With a Roblox or Rixty card, you need to enter the PIN code on the card and then click Redeem .
If you choose PayPal, follow the on-screen instructions to sign in to your PayPal account and complete your payment.
If you pay by credit/debit card, you'll also need to enter an email address.
Click Pay now or Submit Order . This green button is below your payment information. After the system processes the payment information, Robux will be added to your in-game account.
On your phone or tablet
Open Roblox on your Android, iPhone or iPad device. The app has an icon of two Roblox characters with the game name "ROBLOX" inside. You'll find the app on your home screen or app drawer.
Click on the R$ icon near the upper right corner. The current balance will appear at the top.
Click on the amount of Robux you want to buy. The value of each package will appear next to the amount of Robux you are buying. A notification will pop up asking you to confirm your order.
If you want to cancel your order, tap Cancel (iPhone/iPad) or back button (Android).
Follow the on-screen instructions to pay for your Robux order. If you use Android, you'll be billed to your Google Play account. On your iPhone or iPad, you'll be billed by the App Store. After the system confirms, Robux money will be added to the game balance.