Crypto Profit Calculator
Estimate your cryptocurrency profit or loss using live market prices from CoinGecko. Enter your buy price, the amount you bought, any exchange fees, and an optional tax rate to see your net return.
How the crypto profit calculator works
The calculator multiplies your buy price by the quantity bought to get your cost basis, and your sell price by the quantity to get your proceeds. Exchange fees are applied as a percentage of each trade. The optional tax rate is applied only to your net gain — never to a loss.
Which coins are supported?
The dropdown lists the top 20 coins by market cap, including Bitcoin, Ethereum, Solana, XRP, and more. Prices are fetched live from CoinGecko's public API; if a live fetch fails, the calculator falls back to the last cached price stored in your browser.