Satoshis in Bitcoin: What Is It & What’s it Worth?

Satoshis are the smallest denomination of Bitcoin and get their name from the anonymous founder of Bitcoin. Learn about Satoshis in Bitcoin and what they're worth.

What is a Satoshi?

The satoshi is the smallest denomination of the cryptocurrency Bitcoin, named after its creator(s), Satoshi Nakamoto. There are 100 million satoshis in one Bitcoin. Because a whole Bitcoin can be very expensive, people often use satoshis (or “sats”) for smaller transactions.

Where did the name Satoshi come from?

The name Satoshi comes from Satoshi Nakamoto, the pseudonymous creator (or creators) of Bitcoin.

When Bitcoin was introduced in the 2008 white paper “Bitcoin: A Peer-to-Peer Electronic Cash System”, it didn’t originally specify smaller units. Later, as Bitcoin’s value grew, the community adopted the satoshi as the smallest unit of Bitcoin in honor of Nakamoto.

Read next: Who Founded Bitcoin?

How many Satoshis are in a Bitcoin?

There are 100,000,000 satoshis in a Bitcoin. You can use our table to convert Bitcoin to Satoshis:

Bitcoin’s divisibility

Satoshis give Bitcoin a high degree of divisibility. Since one Bitcoin can be worth tens of thousands of U.S. dollars, a satoshi, equal to one hundred millionth of a Bitcoin, amounts to only a fraction of a cent. This level of precision allows Bitcoin to handle very small payments, often referred to as microtransactions, in a way that traditional currencies cannot.

In its early days, when Bitcoin was inexpensive and transaction fees were minimal, it was commonly used for frequent, low-value payments. Online gambling platforms were among the first to take advantage of this.

Over time, Bitcoin’s rapid increase in value and the accompanying rise in fees made such everyday uses less practical. To address this, developers created secondary layers such as the Lightning Network and the Liquid Network, which enable faster and cheaper Bitcoin transactions while maintaining security.

How is Satoshi different from other denominations?

Different cryptocurrencies use their own systems of denominations, often based on the preferences of their creators. In Bitcoin’s case, the satoshi is the sole base denomination, representing the smallest unit of Bitcoin. By contrast, Ethereum has multiple denominations for its native currency, ether (ETH).

These denominations make it easier to express and process very small amounts of cryptocurrency without always referring back to the often large market value of a single coin. However, for newcomers, the varying units across different cryptocurrencies can be confusing.

Bitcoin can be broken down using satoshis or by applying metric-based shorthand:

• 1 millibitcoin (mBTC): 0.001 BTC = 100,000 satoshis

• 1 microbitcoin (µBTC, sometimes called a “bit”): 0.000001 BTC = 100 satoshis

• 1 satoshi: 0.00000001 BTC

This divisibility makes it easy to perform tiny transactions, which is particularly important given Bitcoin’s high price.

Ethereum uses a more complex system of units:

• 1 wei: the smallest unit, equal to 1 quintillionth (10⁻¹⁸) of an ether

• 1 gwei: 1 billion wei (commonly used to measure gas fees on the Ethereum network)

• 1 ether (ETH): 1 quintillion wei

While Ethereum technically supports many other denominations (such as finney, szabo, and kether), wei, gwei, and ether are the most commonly used.

How many Satoshis per person in the world?

If the goal of Bitcoin is global mainstream adoption as the leading currency, then you can think of satoshis as the equivalent of dollars in today’s world.

Because Bitcoin is capped at 21 million coins (100 million sats), there’s a strict upper limit on how many coins exist. This scarcity means that even owning a relatively small number of sats could become meaningful in the future, especially if Bitcoin sees widespread use.

In that sense, sats represent not just divisibility, but also a way to frame Bitcoin’s potential future value in everyday transactions.

In theory, the math to calculate this is simple. Bitcoin has a hard cap of 21 million coins (2.1 quadrillion sats total). Dividing that by the global population, if distribution were perfectly equal, each person could only ever own about 255,000 sats (0.00255 BTC).

However, this math misses out key considerations like wealth distribution, as well as ignores the fact that potentially millions of Bitcoins are permanently lost due to discarded hard drives, lost private keys, and so forth.

Read next: Why Does Bitcoin Have Value?

Satoshi use cases

There are a several real-world use cases for Satoshis, including:

• Microtransactions and tipping: Satoshis enable small transactions on the Bitcoin network, often used to tip content creators for their work, whether it's digital art or a meme.

• Stacking Sats: Sats let investors purchase incremental, smaller amounts of Bitcoin at more affordable prices.

• Satoshi test: A Satoshi test is a form of wallet verification in which the user sends a tiny amount of Sats to prove they own the wallet.

• Everyday purchases: It is easier to price everyday purchases with Satoshis; 100,000 Satoshis is cleaner than 0.001 BTC, especially for small transactions like coffee or digital services.

• Gaming rewards: Some games reward players with Satoshis and allow users to use Sats to buy in-game items, like new skins.

Don’t forget the tax bill…

Whether you calculate your profits in Bitcoin, satoshis, or dollars, your profits are taxable. You’ll generally pay Income Tax or Capital Gains Tax on Bitcoin, depending on the specific transaction and where you live. You can learn more about the rules where you live in our crypto tax guides, or sign up to Koinly free to calculate your Bitcoin taxes for you.