Risk Lab · free
Position size calculator
Pick the risk first — the size follows. 1R is the dollars you lose if the stop is hit; a target is worth its distance in R. Wrong-side stops get refused, not silently fixed.
Risk per trade
Direction
Enter an entry and a stop — the size follows from the risk, not the other way round.
More tools
The market calendar — FOMC, CPI, expiries and what those days actually do · the simulator — Monte Carlo these numbers forward into equity paths.
Sizing is half the game — the record is the other half
A free journal turns every fill into R automatically — import from any exchange, and the lab measures which of your setups actually earn their risk.