The tool serious traders reach for first. Instead of guessing how much to buy, you decide how much you’re willing to lose — and it works backwards to a position size that respects that limit.
These calculators are free educational tools that work only on the figures you type in. They don’t use live prices, don’t predict the future, and are not financial or tax advice. Crypto is high-risk and you can lose money. Always do your own research — see our Risk Disclaimer.
Risk management flips the usual question. Rather than “how much can I buy?”, it asks “how much am I willing to lose on this?” You set that as a percentage of your account (1–2% is a common rule). The calculator multiplies it out to a pound figure, measures the gap between your entry and your stop-loss, and divides — giving the largest position whose worst case still only costs you that pre-agreed amount.
Most people who blow up an account don’t do it on one bad call — they do it by betting too big, too often. Sizing every position to a fixed small risk means no single trade can wreck you, which is exactly why it’s the first habit any honest educator teaches. It pairs naturally with never investing more than you can afford to lose.
Many traders cap it at 1–2% of their account per position, so a long losing streak still leaves them in the game. This is a widely taught rule of thumb, not a recommendation for your situation — that’s yours to decide.
A price at which you’ve decided in advance to sell and cut the loss. The calculator uses the distance between your entry and your stop to size the trade. On many decentralised setups stop-losses aren’t automatic, so treat it as your plan, not a guarantee.
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