Convert BTC to USD, Free
Live exchange rates updated daily. Enter any BTC amount for the USD equivalent.
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How to convert BTC to USD
Bitcoin prices fluctuate by the minute across global exchanges, so any fixed conversion factor goes stale almost immediately. This converter fetches the current BTC/USD rate from a live market data source and applies it to the amount you enter, giving you a conversion that reflects what bitcoin is actually trading for right now rather than an outdated figure baked into a static table.
The calculation itself is straightforward: your BTC amount multiplied by the current spot price. The math runs in your browser instantly using JavaScript. Because Bitcoin trades 24 hours a day with no closing price, the rate shown represents the most recent transaction data available from the connected exchange feed.
Enter your BTC amount
Type any Bitcoin amount in the input field. Bitcoin is divisible to 8 decimal places, so you can enter amounts like 0.00015 (one satoshi above the minimum transaction unit).
Check the live rate
The current BTC/USD exchange rate is displayed next to the input. The rate refreshes automatically; if it looks stale, reload the page to fetch the latest price.
Read the USD result
The USD equivalent appears instantly as you type. The formula is simply: USD = BTC x current price. No rounding is applied to intermediate calculations.
Note the timestamp
The conversion result shows when the rate was last fetched. For time-sensitive transactions, verify the rate directly with your exchange before executing a trade or payment.
Frequently asked questions
Why does the price shown here differ from my exchange?
BTC/USD prices vary between exchanges by small amounts due to different liquidity pools, trading volumes, and fee structures. The rate here reflects the source we pull from, which may differ by a fraction of a percent from your specific platform.
What is a satoshi, and how many are in a bitcoin?
A satoshi is the smallest unit of bitcoin, equal to 0.00000001 BTC. One full bitcoin contains 100,000,000 satoshis. When dealing with small amounts, satoshi values are more practical than expressing tiny fractions of a full coin.
How often does the rate update?
The rate refreshes each time you load or reload the page, and typically updates automatically every 30 to 60 seconds while the page is open. For a transaction you are about to execute, confirm the exact rate on your exchange.
Is this converter suitable for tax calculation purposes?
No. Tax calculations require the exact price at the moment of the transaction, usually sourced from the specific exchange used, not a general market feed. Use your exchange's transaction history for tax reporting.
Can I convert fractions smaller than 0.001 BTC?
Yes. You can enter any amount down to 0.00000001 BTC (1 satoshi). The calculator handles the full 8-decimal precision that the Bitcoin protocol supports.