Live tool · runs in your browser
Position Sizing Calculator
Plug in your account size, the percentage you're willing to risk on this trade, your entry, stop, and target. The calculator returns the exact position size that risks no more than you set, your £-at-risk, your reward-to-risk multiple, and a few honest warnings if your inputs suggest poor edge or excess leverage. Mechanical companion to Verge's biometric awareness.
What it does
- Long or short — direction-aware validation
- Output: exact position size, £-at-risk, reward-to-risk (R)
- Warnings when sizing is aggressive or edge is poor
- Built specifically for traders — pairs with Verge for full discipline
- Runs locally — no account, no signup, no data leaves your browser
Your account
The trade
Direction
The position
Position size
50.00
units / shares / contracts at £100.00
£ at risk
£100
1.0% of account · stop is 2.00% away
Reward-to-risk
2.00R
Win pays £200
What this means
Buying 50.00 units at £100.00 (total exposure £5,000, 50% of account). If your stop hits, you lose £100. If your target hits, you make £200 — that's 2.00R.
This handles the mechanics — what to risk and how to size. What it can't tell you is whether your nervous system should be trading right now in the first place. Verge is the studio's tool for that — biometric awareness before, during, and after the trade.
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