A trailing stop turns a paper gain into a floor
An ordinary stop-loss is a line in the sand you set once and leave. A trailing stop is a line that follows. It sits a fixed distance — the trailing distance, sometimes called the callback rate — behind the best price the trade has reached, and it only ever moves in your favour. When price rises, the stop rises with it; when price falls, the stop stays put. The effect is that once the trade has run far enough, the stop crosses above your entry and every further push upward drags a higher floor along underneath it. From that point the question is no longer "will this trade lose money" but "how much of the gain will I keep".
That is the number this calculator is built around. It finds the price at which the trailing stop first locks in a profit, then shows the profit secured at each level beyond it — both as a percentage of the underlying price and, crucially, as return on equity once your leverage is applied. A modest 3% price gain doesn't sound like much until you see it as a locked 30% ROE at 10x. The trade-off is set entirely by the trailing distance: tight trails lock profit sooner but get shaken out by ordinary volatility, wide trails ride the trend further but hand back more on the reversal. Seeing both sides in a table is how you pick a distance you can actually live with.
How to use it
1. Choose long or short and enter your entry price.
2. Set the trailing distance — the percentage the price can pull back from its best level before the stop fires.
3. Enter your leverage to see the locked gains as ROE on your margin.
4. Read the table to see the profit locked at each level, and optionally type the best price reached so far to see exactly where your stop sits right now.
Common mistakes
Trailing tighter than the noise. If the trailing distance is smaller than a normal wick, the stop fires on routine chop and you miss the move — match it to the coin's real range with the volatility calculator. Expecting it to lock profit immediately. Until the best price has risen by more than the trailing distance, the stop is still below your entry and protects nothing but a smaller loss. Forgetting it never loosens. A trailing stop can't be widened by the market moving against you — that's the point — so set it deliberately, not in a panic. Ignoring slippage on the exit. A fast reversal can fill your stop below the trigger, so the locked profit is a target, not a guarantee to the cent.
FAQ
Is trailing distance the same as callback rate? Yes — exchanges like Bybit and Binance call it a callback rate or trailing rate, but it's the same fixed percentage pullback from the best price that triggers the exit.
Where does the stop actually start? It activates at the best price seen (or an activation price you set) and trails from there. Before the trade moves in your favour, it simply sits one trailing distance below your entry.
Should I use a trailing stop or a fixed take-profit? They answer different questions. A fixed target banks a known amount; a trailing stop tries to capture an unknown, larger move while protecting most of it. Many traders combine them — bank part at a target with the take-profit ladder and trail the rest.