Explore the Private Key Space
This site lets you pick or explore 256-bit private keys, derive Bitcoin and Ethereum addresses, and look up public balances entirely in your browser—nothing is uploaded to our servers.
Your keys stay on your device; we do not store them. Use it to learn how keys, public keys, and addresses relate—not to expose real funds.
How it works
A private key is a secret 256-bit number. Whoever controls it can authorize spends from addresses derived from that secret, which is why you must never share a real key with anyone.
From the private key, elliptic-curve cryptography derives a public key, then one or more addresses you can share to receive funds. Here you can follow that chain for common Bitcoin and Ethereum formats.
Every valid key mathematically “exists” in the huge private-key space—that does not mean your funds are easy to find. There are on the order of 2^256 possibilities; guessing a key that controls value is not feasible, which keeps networks secure even when people browse or experiment.
Educational resources
General
- How this website works
An overview of Private Key Finder: what it does in your browser and what it never stores.
- Why browsing keys is safe
Why exploring random or chosen keys here does not put your funds at risk by itself.
Network guides
FeaturedBitcoin
What is a Bitcoin private key?What a 256-bit secret is, how it relates to your coins, and why it must stay private.
FeaturedEthereum
What is an Ethereum private key?The same 256-bit secret idea as Bitcoin, used for Ethereum accounts and signing.