BTC ↔ satoshis
One bitcoin contains exactly 100,000,000 satoshis.
500,000 sats
OPEN EDUCATION · NO HYPEBitcoin is complicated.
Bitcoin is complicated.
Learning it shouldn't be.
Understand how Bitcoin works, protect your funds, and explore the numbers with practical, jargon-free guides and tools.
21MMaximum BTC supply100MSatoshis per BTC~10 minTarget block interval
YOUR LEARNING PATH
Start with the fundamentals
Short lessons organized from first principles to practical use.
INTERACTIVE · PRIVATE · FREE
Bitcoin calculators
All calculations run in your browser. Values you enter are not transmitted anywhere.
BTC value calculator
Enter a hypothetical BTC price. This tool does not fetch live prices.
Return scenario
Compare an entry price and a hypothetical exit price, excluding taxes and fees.
Transaction fee calculator
Estimate a fee from transaction size and a fee rate. This is not a live fee recommendation.
Actual virtual size depends on inputs, outputs and script types. Consult current mempool conditions before sending.Mining break-even
A simplified operating-cost model, not a profitability forecast.
Excludes pool fees, hardware, cooling, repairs, taxes and difficulty changes.Dollar-cost averaging
Model contributions at a constant assumed BTC price, not historical performance.
PROTECT YOUR BITCOIN
Security essentials
Ownership means responsibility. These habits matter more than predicting price.
Keep recovery words offline
Never type a seed phrase into a website, cloud note, chat, or support form. Anyone with it can typically control the funds.
Verify every address
Double-check the full destination and network on your trusted device, especially when using a hardware wallet.
Start with a small test
When using a new wallet or destination, consider a small test transaction before transferring a larger amount.
Beware of fake support
Legitimate support will not ask for your recovery phrase. Ignore guaranteed-return offers and unsolicited investment messages.
Plan for recovery
Back up your wallet according to its instructions and test recovery safely before relying on it for significant funds.
Know your custody model
Exchange balances are claims against a custodian. Self-custody removes that dependence but adds personal security responsibilities.
BITCOIN LANGUAGE, DECODED
Search the glossary
Plain-English explanations of essential Bitcoin terms.
TEST YOUR KNOWLEDGE
Bitcoin basics quiz
Five questions to check what you've learned.
Curiosity beats hype.
Explore carefully, verify independently, and never risk money you cannot afford to lose.
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