Well, in most Bitcoin wallets, you can easily check your balance. It's usually displayed right up front when you open the wallet software or app.

Plus, 'cause the Bitcoin blockchain is public, you can actually look up any wallet address and see how many bitcoins it holds. There are websites out there that let ya do this - they're called block explorers.

So if ya wanna check a balance without opening your wallet, just copy your public address and paste it into a block explorer site. But remember: even though anyone can see an address's balance, only you (with your private key) can access and spend those bitcoins!