Guide
What Is BTC? Bitcoin's Ticker, Units & Satoshis
Bottom line: BTC is Bitcoin's unit, and the smallest unit is one satoshi
BTC is the currency unit (ticker symbol) used to count Bitcoin. Just as the yen is written "JPY" and the US dollar "USD," Bitcoin is written "BTC." "1 BTC" means "one bitcoin."
Key takeaways
- BTC is Bitcoin's unit. "1 BTC" means one bitcoin.
- 1 BTC divides down to one hundred-millionth, and the smallest unit is called a satoshi (sat).
- So 1 BTC = 100,000,000 satoshis. Even if you can't buy a whole coin, you can hold it from a few hundred yen.
- There are in-between units like "mBTC" and "bits," but in practice "BTC" and "satoshi" are the main ones.
1 BTC can be split into tiny pieces
Bitcoin looks expensive, but you don't have to buy a whole coin. It divides down to eight decimal places, and that smallest unit is named the "satoshi" after its inventor, Satoshi Nakamoto.
| Unit | In BTC | Note |
|---|---|---|
| 1 BTC | 1 | One bitcoin |
| 1 mBTC (millibit) | 0.001 BTC | One thousandth |
| 1 bit | 0.000001 BTC | One millionth |
| 1 satoshi (sat) | 0.00000001 BTC | One hundred-millionth (smallest unit) |
For example, when 1 BTC is 9 million yen, 0.001 BTC (1 mBTC) is about 9,000 yen and 10,000 satoshis is about 900 yen. If you want to start with a small amount, you can begin from as little as 1,000 yen.
Why being divisible is so useful
Even as the price rises, anyone can take part with a small amount. Even small payments like the cost of a coffee (for example via the Lightning Network) can be made in satoshi units. The defining trait is that it combines the scarcity of the 21-million-coin cap with the flexibility of being finely divisible.
FAQ
Q. Are BTC and Bitcoin different things? A. They're the same. BTC is the unit/symbol that represents Bitcoin.
Q. How much is one satoshi? A. It's one hundred-millionth of 1 BTC. If the BTC price is 9 million yen, one satoshi is about 0.09 yen.
Q. Is it pointless if I can't buy a whole coin? A. No. Because it divides into satoshi units, you can hold just a few hundred yen's worth.
Q. I saw the notation "XBT" — what's that? A. Some places use "XBT" instead of BTC. It follows an international-standard notation, but it means the same thing as BTC.
Sources
- bitcoin.org — FAQ: https://bitcoin.org/en/faq
- Bitcoin Wiki — Units: https://en.bitcoin.it/wiki/Units
Not investment advice
This article is for educational purposes only and is not investment advice. Bitcoin is volatile and carries risks including loss and theft. Do your own research and only use money you can afford to lose. Tax and regulation can change — always confirm with the official primary source.
Sources
FAQ
- Are BTC and Bitcoin different things?
- They're the same. BTC is the unit/symbol that represents Bitcoin.
- Is it pointless if I can't buy a whole coin?
- No. Because it divides into satoshi units, you can hold just a few hundred yen's worth.
- How much is one satoshi?
- It's one hundred-millionth of 1 BTC. If the BTC price is 9 million yen, one satoshi is about 0.09 yen.
This article is informational only and is not financial, investment, or trading advice. Prices are reference snapshots and may be outdated. Always do your own research.
