Crypto stop-loss risk calculator — what the stop costs the account
A 2% stop distance is not 2% account risk. This converts your entry, stop and size into the dollars the stop is planned to lose and the share of your account that is — then shows the size that would have fit the rule you name.
The stop costs the account
$166.72
Stop distance as % of price2.35% — a different number
Raw stop loss$160.00
Fees (round turn)$6.72
Size within your rule1.199 base units
Assumes the stop fills at its price. It often does not; a fast market fills worse, and no calculator can promise the exit.
What this covers
—Linear contracts, long or short — the distance is what matters, not the direction.
—Includes round-turn taker fees; excludes funding, which depends on holding period.
—The stop is assumed to fill at its price. A gap or a thin book fills worse; that limitation is stated, not modelled here.
Formula and assumptions
—Planned stop loss = |entry − stop| × quantity.
—Fees = (entry notional + stop notional) × taker fee in bps.
—Account risk % = all-in loss ÷ reported equity.
—Stop distance % = |entry − stop| ÷ entry — a different number, kept separate on purpose.
—Size within rule truncates down, never rounds.
stop_risk.crypto.v1
Worked example
Example — not a recommendation.
Position2 ETH · entry 3,400 · stop 3,320
Stop distance$80 = 2.35% of price
Planned loss$160 + $6.72 fees = $166.72
Account risk on $10,0001.67% — not 2.35%
Size within a 1% rule1.198 ETH
Common mistakes
×Reading the stop's price percentage as the account's risk percentage. Size is the bridge between them.
×Setting the stop by a round number on the chart, then sizing by feel — the two decisions never meet.
×Forgetting fees on both legs; the small print is part of the loss.
×Trusting the stop to fill at its price in a fast market.
Limitations
This is arithmetic on numbers you supplied. It does not know your broker, your account, or the market. It does not predict price, does not say whether to take a trade, and is not advice. Maximelion is not affiliated with any broker or prop firm, and nothing here is endorsed by one.
Last reviewed 31 July 2026