Trading tools · Risk management

Position / risk calculator

This position calculator answers the question every beginner should settle first: on this trade, exactly how big should the position be? The logic is simple. First decide the most you are willing to lose on this trade, as a percent of your capital. Then, using your entry and stop, it works backward to how much you should buy. That way, no matter how the price moves, your worst-case loss on the trade is locked in ahead of time, instead of being whatever you happened to feel like betting. Enter your capital, the per-trade risk %, your entry and your stop, and it works out the suggested size, the matching notional, and the most you can lose, in real time. This is an educational risk-management aid only, not investment advice.

This trade

Account capital total funds you plan to trade with (USDT)

Risk per trade most you will lose on this trade, as a % of capital

%of capital

Direction

Entry price

Stop price

Suggested position size (units)

0.0417

units (e.g. BTC) · notional approx $2,500

Position vs capital

Max loss

$50.00

If stop is hit

Stop distance

2.00%

Entry to stop

Notional / capital

0.50×

Exposure needed

The math behind it (it is simple)

The whole calculation is just two steps, nothing mysterious:

Max loss you accept = capital × risk-per-trade % Position size = max loss you accept ÷ |entry − stop|

Example: capital 5000, risk 1% per trade, so this trade is allowed to lose at most 50 dollars. If your entry is 60000 and your stop is 58800, the potential loss per unit is 1200. Then 50 ÷ 1200 ≈ 0.0417 units, which is your suggested size. However the price swings, as long as you exit strictly at the stop, the loss on this trade stays locked around 50 dollars.

How to use it

Enter your account capital (all the money you use for trading, not the amount on a single trade).
Set your per-trade risk. Beginners often use 0.5%–2%, meaning even if this trade hits the stop, it only dents a small slice of your capital. You can tap the quick buttons below.
Pick a direction and enter your entry and stop. On a long, the stop should be below the entry; on a short, above. If you get it backward, a note below will flag it.
The big number up top is how much to buy (units); the gauge shows what share of your capital this position's notional takes up, and beside it are the most you can lose and the stop distance.

Common questions

How much should I risk per trade?

There is no single right answer, but most risk principles suggest keeping per-trade risk within 1%–2% of your capital. That way, even a run of stop-outs in a row won't break your account and you keep enough capital to recover. The newer you are, and the more volatile the asset, the smaller you should set it.

Why does the notional exceed my capital?

When the stop is very tight (small stop distance), the size implied by a fixed loss amount gets large and the notional can exceed your capital, which means you would need leverage. Leverage amplifies both swings and liquidation risk, so beginners should be careful; the Notional / capital metric is there to flag exactly this.

Does this position include fees and slippage?

No. What this calculates is the theoretical maximum loss under ideal conditions, with a strict stop. Real trading also has fees, slippage, and the chance that a price gap means your stop can't fill exactly, so the real loss may be slightly larger than the number here. Treat it as a yardstick before you bet, not an exact bill.

Will it guarantee I don't lose money?

No. Position sizing only caps the loss on a single trade, so you can afford to be wrong and keep your capital; it doesn't mean you'll win. Whether you make money comes down to your judgment and the market, and a tool can't help with that. Crypto is extremely volatile, so judge for yourself and take the risk on yourself.

Get the risk under control, then start trading

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This tool is an educational risk-management aid for beginners. Results exclude fees, slippage, and price gaps, and are not investment advice. Crypto is highly volatile and leverage amplifies risk, so judge for yourself and take the risk on yourself before taking part. Checked: 2026-06.