What if you'd bought?
That coin you almost bought — pick a date and an amount, and see what it would be worth today.
How it works
Pick a date and an amount, and we work out how much crypto that would have bought at the day's actual price (Coinbase daily close, in US dollars).
We multiply that quantity by today's live price to show what it would be worth now. Supports Bitcoin, Ethereum, and Solana.
Every number is a past fact, not a forecast. We never predict future prices or give investment advice.
What this shows — and what it doesn't
This is a hindsight calculator. It answers one question — "what if I'd bought this coin on this exact past date?" — using only prices that already happened. It's clarifying and a little addictive, but it isn't a prediction. Nobody could have known any of these outcomes in advance.
It assumes a single purchase on the date you pick, held without selling. It doesn't model buying a bit each month, taking profits along the way, or re-buying dips — real investing is messier than that. Trading fees, taxes, and the exact price you'd have filled at are all left out.
The eye-popping numbers come from picking dramatic dates. The same coin bought a few weeks later, or one that didn't survive its cycle, tells a very different story. Treat the result as a conversation starter, not a strategy.
Frequently asked questions
- What data do you use?
- Coinbase daily close prices in US dollars. Bitcoin history goes back to 2015; Ethereum and Solana start at their listing dates.
- Is this investment advice?
- No. It only shows what a past purchase would be worth today. It never predicts future prices or tells you to buy.
- How is the price for a specific date decided?
- We use Coinbase's daily close for the date you pick. If there's no data that day, we use the most recent prior trading day.
- Is the result a real return?
- No. It's a simple what-if conversion that assumes you had bought back then. It ignores fees, taxes, and actual fill prices.
- Which coins can I check?
- Bitcoin, Ethereum, and Solana, each priced in US dollars. Bitcoin has the longest history (from 2015); Ethereum and Solana begin at their Coinbase listing dates.
- Why does the date I pick change the result so much?
- Crypto prices swing hard, so buying a week earlier or later can move the outcome a lot. That is exactly why buying at a famous crash or peak looks so different — the crash and peak scenarios on this page walk through those exact dates.
- Does "what it is worth today" mean I would have that much cash?
- It is the market value of the coins at today's price, assuming you never sold. What you would actually walk away with is lower after trading fees and any taxes, and depends on the price at the moment you sell.
Crash & peak scenarios
Want a specific moment instead of a slider? These walk through what a purchase at a famous crash or peak would be worth now — with the real, dated prices.