The most advanced free Bitcoin unit converter. Convert between Satoshis, BTC, USD, GBP & EUR instantly with live prices.
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Total supply: 21,000,000 BTC = 2,100,000,000,000,000 sats
Bitcoin Denomination Table
Unit
Symbol
Satoshis
BTC
Description
Satoshi
sat
1
0.00000001
Smallest on-chain unit
Microbit
μBTC / bit
100
0.00000100
Also called "bits"
Millibit
mBTC
100,000
0.00100000
Common exchange unit
Centibit
cBTC
1,000,000
0.01000000
Bitcent
Decibit
dBTC
10,000,000
0.10000000
Tenth of a bitcoin
Bitcoin
BTC / ₿
100,000,000
1.00000000
Base unit
⚡ Lightning Network: The Lightning Network supports millisatoshis (msat), where 1 satoshi = 1,000 millisatoshis. This allows for even smaller micropayments off-chain, though msats are rounded to whole satoshis when settling on-chain.
What is a Satoshi?
A Satoshi (often abbreviated as sat) is the smallest unit of Bitcoin that can be recorded on the blockchain. It is named after Satoshi Nakamoto, the pseudonymous creator of Bitcoin whose true identity remains unknown to this day.
One Satoshi equals 0.00000001 BTC — that's one hundred millionth of a single Bitcoin. Since Bitcoin's price has grown to tens of thousands of dollars per coin, most everyday transactions involve fractions of a Bitcoin. Using Satoshis as a unit makes these amounts far more intuitive: instead of saying "0.00050000 BTC," you can simply say "50,000 sats."
The Lightning Network, Bitcoin's layer-2 payment protocol designed for instant and low-fee transactions, has standardized the Satoshi as its default unit. When you send payments over Lightning, amounts are denominated in sats, making it the practical everyday unit for Bitcoin commerce.
The term "sat" is rapidly gaining popularity in the Bitcoin community. Phrases like "stacking sats" (accumulating small amounts of Bitcoin over time) have become part of the culture. As Bitcoin adoption grows, many believe sats will become as familiar as cents are to the dollar.
Frequently Asked Questions
How many Satoshis are in one Bitcoin?
There are exactly 100,000,000 (one hundred million) Satoshis in one Bitcoin. This ratio is hardcoded into the Bitcoin protocol and will never change. Think of it like cents to a dollar, but with 8 decimal places instead of 2.
How much is 1 Satoshi worth in USD?
The USD value of 1 Satoshi fluctuates with Bitcoin's price. To calculate it, divide the current BTC price by 100,000,000. For example, at $100,000 per BTC, 1 sat = $0.001 (one tenth of a cent). Use the live converter above for the real-time value.
How do I convert Satoshis to BTC?
Divide the number of Satoshis by 100,000,000. For example: 25,000,000 sats ÷ 100,000,000 = 0.25 BTC. Our converter handles this automatically — just type your sats value and see the BTC equivalent instantly.
How do I convert BTC to Satoshis?
Multiply the BTC amount by 100,000,000. For example: 0.005 BTC × 100,000,000 = 500,000 Satoshis. Simply enter your BTC amount in the converter above and the sats value will appear automatically.
What is a Satoshi?
A Satoshi is the smallest unit of Bitcoin, representing 0.00000001 BTC. It is named after Bitcoin's pseudonymous creator, Satoshi Nakamoto. Just as a dollar is divided into 100 cents, one Bitcoin is divided into 100,000,000 satoshis.
Can you have less than 1 Satoshi?
On the Bitcoin blockchain (on-chain), no — the Satoshi is the smallest indivisible unit. However, the Lightning Network supports millisatoshis (msat), where 1 sat = 1,000 msat. This enables even finer-grained micropayments on layer-2, though amounts are rounded to whole satoshis when settling on the main chain.
Why are Satoshis important?
Satoshis make Bitcoin accessible and practical for everyday transactions. Since 1 BTC costs tens of thousands of dollars, most people deal in fractions. Sats provide whole numbers that are easier to understand — saying "5,000 sats" is more intuitive than "0.00005 BTC." They're essential for Lightning Network payments and small Bitcoin purchases.
What is the difference between a bit and a Satoshi?
A bit (also called a microbitcoin or μBTC) equals 100 Satoshis, or 0.000001 BTC. So 1 BTC = 1,000,000 bits = 100,000,000 sats. While "bits" were an early attempt to create a user-friendly smaller denomination, Satoshis have become the widely adopted standard, especially on the Lightning Network.