Calculator
What if I bought bitcoin…
Pick a month and an amount. Hindsight is 20/20.
Price then
$390
BTC bought
2.56410256
Price now
$83,618
Worth today
$214,405
That's a 214.4× change. Price source: Bundled data (latest monthly close)
BTC price data: Kraken public OHLC API (XBT/USD, 15-day candles; last close observed in each month), fetched Oct 13, 2026 (Kraken OHLC API docs). Coverage September 2013 to October 2026, bundled so it works offline. Monthly closes are approximate. Past performance does not guarantee future results. Not financial advice.