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Crypto position sizer

CryptoRuns in your browser
Of the account, on this one trade.
Perpetuals only. Leave at 0 for spot.
Position size0.033333units of the base asset — crypto is fractional, so this needs no rounding
Risk amount100.00
Notional value2,166.67
Leverage needed0.22×under 1 means the position fits your balance
Reward : risk2.33
Break-even win rate30.0%
Funding over the hold0.65charged on notional, not on margin
Funding as share of risk0.7%the part of your risk budget spent before the trade does anything

Arithmetic, not advice. It sizes a position from numbers you type — it has no market data, no view on any instrument, and no idea whether your stop is sensible. Nothing you enter leaves your browser. Funding is charged on notional every 8 hours, so a leveraged multi-day hold can spend a large share of its risk budget on carry alone.

Why funding gets its own line

Crypto units are fractional, so sizing is the easy part — the maths gives you a number and you can take exactly that number.

The part that gets missed is carry. Perp funding is charged on notional, not on margin, every eight hours. A position sized to risk 1% can spend a meaningful share of that 1% on funding alone before price does anything at all, and the share doesn't shrink when you lower your risk — the account size cancels out of the ratio. That's why it's a headline number here rather than a footnote.