What is a UID in Free Fire
UID stands for User ID — it is the unique numerical identifier for your Free Fire account. It never changes, is independent of your character name, and uniquely identifies your account among millions of players.
When topping up diamonds through third-party platforms, you will be asked for your UID. It lets the service credit diamonds to the correct account without requiring your login credentials.
How to find your UID in Free Fire
Launch Free Fire and wait for the main screen to load.
Tap your avatar in the top-left corner of the screen to open your profile.
Your UID is the numerical code displayed directly below your nickname. It is typically a sequence of 9–10 digits (for example: 1234567890).
Copy or note down your UID — you will need it when placing your order.
Alternatively: tap the Share button in your profile — the UID appears in the shareable link or QR code.
How to top up diamonds by UID: step-by-step
Through Marix
Go to marix.cc/games and find the Free Fire section.
Select the diamond package you want (amount and price).
Enter your numerical UID in the designated field.
The platform will automatically display your in-game nickname — verify that the name matches your account.
Choose your payment method and complete the purchase.
Diamonds will arrive in your account within a few minutes.
Through Codashop
Go to codashop.com and select Free Fire.
Enter your UID in the relevant field.
Confirm the nickname, select a package and payment method.
Complete the transaction.
Important tips
- Always check the displayed nickname after entering your UID. If the name does not match, you have entered the wrong UID.
- Never enter someone else's UID by mistake — diamonds sent to the wrong account are very difficult to recover.
- UID is not your character name — your name can be changed at any time, but the UID is permanent.
- One UID per account. If you have multiple Free Fire accounts on different servers, each has its own UID.
Frequently asked questions
What if the platform cannot find my UID? Make sure you entered only numbers with no spaces. Also check that you have selected the correct regional server on the top-up platform.
Will diamonds arrive instantly? In most cases within 5–15 minutes. During peak hours it may take up to 30 minutes.
Can I top up a friend's account? Yes — that is exactly what the UID system is designed for. Ask your friend for their UID and complete the purchase on their behalf.
Topping up by UID is the fastest and safest way to buy diamonds. On Marix the entire process takes under 2 minutes, and the nickname is verified automatically to prevent errors.