Bitcoin units
BTC is the most well-known unit of Bitcoin and is typically used for large transactions. For smaller amounts, there are sub-units such as millibitcoin (mBTC), bit (μBTC), and the smallest possible unit, the satoshi (sat). These units make it easier to represent small Bitcoin values, for example in microtransactions or mining payouts.
Overview and explanation of Bitcoin units
Bitcoin (BTC): BTC is the base unit of the Bitcoin cryptocurrency. When people refer to "Bitcoin", they usually mean this unit.
Millibitcoin (mBTC): One millibitcoin equals 0.001 BTC – one thousandth of a bitcoin.
Bit (μBTC): One bit (also called microbitcoin) equals 0.000001 BTC – one millionth of a bitcoin.
Satoshi (sat): One satoshi equals 0.00000001 BTC – one hundred millionth of a bitcoin. The satoshi is named after Bitcoin’s anonymous creator, Satoshi Nakamoto.
Conversion table for Bitcoin units
| Unit | Bitcoin (BTC) | Description |
|---|---|---|
| Bitcoin (BTC) | 1 | Base unit of the Bitcoin network |
| Millibitcoin (mBTC) | 0.001 | 1 mBTC is 1/1,000 of a bitcoin |
| Microbitcoin (Bit) | 0.000001 | 1 bit is 1/1,000,000 of a bitcoin |
| Satoshi (Sat) | 0.00000001 | 1 sat is 1/100,000,000 of a bitcoin |
Bitcoin explained in a nutshell
Bitcoin is a digital peer-to-peer currency based on blockchain technology. Instead of being controlled by a central authority like a government or central bank, Bitcoin is maintained by a constantly growing network of participants, making it highly decentralized and resistant to censorship or control.
Where can I buy Bitcoin for the lowest price?
Bitget offers the lowest price for 1 Bitcoin (BTC) at $87,602.30. Our calculator compares Bitcoin prices from some of the most popular crypto exchanges, such as Bitget, Kraken, Binance and OKX. (Last updated at Dec 29, 2025).
How does the Bitcoin converter work?
Our Bitcoin converter works very simply: in the first field of the converter, enter the amount in dollars that you want to convert to Bitcoin (BTC). In the background, the current Bitcoin exchange rate is queried and we calculate the exact conversion rate from USD to BTC based on this data.
You can of course also change the converter from US dollar to Bitcoin to Bitcoin to US dollar: Simply click on the small icon between the two input fields. If you want to change the cryptocurrency, simply click on the small arrow symbol next to the currently set currency in the input field of the converter. Now an overlay opens in which you can select the desired cryptocurrency/crypto converter.
In addition, our converters provide you with comprehensive exchange rate tables with the most popular exchange units and show you the lowest prices for Bitcoin (BTC) on the most popular crypto exchanges. Not only can you find all conversion rates of Bitcoin, but also the best price.
“What if?” – Profit calculator for Bitcoin
What if I had invested in Bitcoin? Many people ask themselves this question, especially when BTC prices are rising. With our profit calculator, you can use the historical prices to see whether an investment in Bitcoin would have been worthwhile for you and how it would have developed.
Step-by-step: Calculate profit from Bitcoin
Amount invested: First enter your investment amount in dollars. This is the amount that you would notionally have invested or have actually invested.
Date of purchase: Then select the month and year in which you bought or would buy Bitcoin from the drop-down menu. This allows our calculator to use the exact historical price for your calculation.
Calculate profit: By clicking on the “Calculate profit” button, our tool will determine your potential profit or loss based on the historical prices of BTC.
Result: As a result, you will not only get an estimate of your potential profit or loss for the selected period, but also the total amount, which includes your original investment amount.
Example of how to use our profit calculator:
Suppose you consider what it would have been like if you had bought Bitcoin for 1,000 dollars in January 2022. Let's assume that the price for Bitcoin at that time was 1 dollar per BTC. This means you would have received 1,000 BTC for your investment. If the price today was 150 dollars per BTC, your initial investment of 1,000 dollars would now be worth 150,000 dollars.
You can use our profit calculator to run through different investment scenarios in Bitcoin and develop a better understanding of how your investment could perform under volatile market conditions. It is essential to consider different possible outcomes in order to get a realistic picture of potential investment outcomes.
Please note that these simulations are not intended as investment advice or recommendations . In addition, always be aware that past price developments are no guarantee for the future.
Where does the data for the conversion come from?
We receive our data for the conversion from CoinGecko. These are automatically updated at 15-minute intervals so that you always have the most up-to-date and accurate Bitcoin exchange rate. CoinGecko is an extremely reliable data provider and is used by countless industry giants.
How is the exchange rate of Bitcoin to US dollar determined?
The exchange rate or conversion rate of Bitcoin (BTC) to US dollar is determined by supply and demand on crypto exchanges. On these exchanges, users can buy or sell Bitcoin, with the rate determined by recent transactions. If more people want to buy Bitcoin than sell, the price rises. If more people want to sell than buy, the price falls. In addition, the price can be influenced by external factors such as regulatory news, market sentiment and global economic conditions.
The exchange rate of Bitcoin and other cryptocurrencies is generally subject to strong fluctuations, also known as volatility. This high volatility is also due to the comparatively low market cap and the trading volume of cryptocurrencies, particularly in comparison to traditional asset classes such as gold, equities or ETFs.
Frequently asked questions about the Bitcoin calculator
How much is 1 BTC (Bitcoin) in US dollar?
1 Bitcoin (BTC) currently costs $87,440.00. Over the past 24 hours, the US dollar price of Bitcoin (BTC) is down 0.035%, with a trading volume of $52.29B.
How much is 0.1 BTC (Bitcoin) in US dollar?
0.1 Bitcoin (BTC) currently costs $8,744.00. Over the past 24 hours, the US dollar price of Bitcoin (BTC) is down 0.035%, with a trading volume of $52.29B.
What is the lowest price for 1 Bitcoin (BTC)?
Bitget offers the lowest price for 1 Bitcoin (BTC) at $87,602.30. Our calculator compares Bitcoin prices from some of the most popular crypto exchanges, such as Bitget, Kraken, Binance and OKX.
How much has the price of Bitcoin changed?
The price of Bitcoin is down 3.61% in the last month. Bitcoin (BTC) is down 6.47% over the past year. The last all-time high of $126,080.00 was reached on Oct 06, 2025.
How much is 100 US dollar in BTC (Bitcoin)?
100 US dollar are currently worth 0.0011 BTC. Over the past 24 hours, the US dollar price of Bitcoin (BTC) is down 0.035%, with a trading volume of $52.29B.
How much is 1,000 US dollar in BTC (Bitcoin)?
1,000 US dollar are currently worth 0.011 BTC. Over the past 24 hours, the US dollar price of Bitcoin (BTC) is down 0.035%, with a trading volume of $52.29B.
How can I exchange US dollar for Bitcoin (BTC)?
The easiest way to exchange US dollar for Bitcoin is via one of the many crypto exchanges. After registering and verifying your account, you can deposit US dollar and exchange them for Bitcoin. To find the right exchange for you, we recommend our comparison of crypto exchanges.