What Is a Satoshi?
Quick Answer
A satoshi (sat) is the smallest unit of a Bitcoin. One Bitcoin equals 100 million satoshis, meaning 1 satoshi is 0.00000001 BTC. Named after Bitcoin's creator Satoshi Nakamoto, satoshis allow people to buy, send, and own fractions of Bitcoin without needing to purchase a whole coin.
Key Takeaways
- 1 Bitcoin = 100,000,000 satoshis.
- 1 satoshi = 0.00000001 BTC.
- Satoshis make Bitcoin divisible enough for everyday microtransactions.
- Many people own satoshis rather than whole Bitcoin.
Why Bitcoin Needs Small Units
If Bitcoin could only be traded in whole units, it would be impractical. At a price of $65,000 per BTC, most people could not afford to buy even one. Satoshis solve this by making Bitcoin divisible to eight decimal places.
This divisibility means you can buy $10 worth of Bitcoin and receive approximately 153,846 satoshis. You do not need to buy a whole Bitcoin to participate.
How Many Satoshis Are in One Bitcoin?
The math is straightforward:
- 1 BTC = 100,000,000 satoshis
- 0.1 BTC = 10,000,000 satoshis
- 0.01 BTC = 1,000,000 satoshis
- 0.001 BTC = 100,000 satoshis
This eight-decimal divisibility was built into Bitcoin's original design by Satoshi Nakamoto.
Why the Satoshi Matters for Adoption
As Bitcoin's price has risen, the satoshi has become the practical unit for everyday transactions. On the Lightning Network, transactions are often measured in millisatoshis (1/1000 of a satoshi). In countries experiencing currency devaluation, people commonly save in small amounts of satoshis rather than whole Bitcoin.
The phrase 'stacking sats' has become popular Bitcoin culture, referring to the practice of accumulating small amounts of Bitcoin over time through dollar-cost averaging or earning Bitcoin for goods and services.
Frequently Asked Questions
How much is one satoshi worth?
The value of one satoshi changes with Bitcoin's price. If Bitcoin is worth $65,000, then one satoshi is worth $0.00065. Use our Satoshi Converter tool to check the current value.
Can I buy less than one Bitcoin?
Yes. You can buy any amount of Bitcoin, even just a few dollars' worth. Exchanges allow you to purchase fractional Bitcoin, measured in satoshis.
Why is it called a satoshi?
The unit is named after Satoshi Nakamoto, the pseudonymous creator of Bitcoin. The community adopted the name as the standard term for the smallest denomination.
What is 'stacking sats'?
'Stacking sats' is Bitcoin slang for regularly accumulating small amounts of Bitcoin, typically through dollar-cost averaging or earning Bitcoin income. It emphasizes that you don't need to buy a whole Bitcoin to participate.
Are there units smaller than a satoshi?
On the Lightning Network, there is a unit called a millisatoshi (msat), which is 1/1000 of a satoshi. However, on the main Bitcoin blockchain, the satoshi is the smallest unit that can be recorded.
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Last reviewed: 2026-08-14 · Published by Bitcoin Ink Editorial Team