Developer tools
Position size calculator
Deterministic position size and ATR stop/take-profit — runs in your browser.
Position size
Size result
{
"qty": 20,
"notional": 2000,
"riskAmount": 100,
"rr": 2
}ATR stops
ATR stops
{
"stop": 96.25,
"takeProfit": 107.5,
"stopDistance": 3.75,
"side": "long"
}Same math as the metered API: Risk Calc API →
Your data never leaves the browser.
How it works
- Enter equity, risk %, entry and stop.
- Read qty, notional and R:R.
- Optionally derive ATR-based stop and take-profit.
FAQ
- Is this financial advice?
- No — informational calculator only.
- Do I need an API key?
- Not for this tool. Use Risk Calc API for programmatic access.