Measure what's actually happening when you trade. Stop guessing. Start seeing your real numbers. Enter your last 30+ trades manually or upload a CSV. Free, no signup.
How this works.
For each of your trades, enter whether it was a win or loss, and how big the win/loss was relative to what you risked (the R multiple).
Example: If you risked $100 to make $200 and the trade hit your target, that's a Win at +2R. If you got stopped out for a $100 loss, that's a Loss at -1R. If the trade went halfway then stopped you out at breakeven, that's 0R.
You don't need exact dollar amounts. Just the outcome and how big it was relative to what you risked. Estimate if you have to.
Win rate calculated from too few trades is mostly random noise. Statistics needs sample size to be meaningful.
If you have less than 30 trades, this tool won't give you a Kelly recommendation. Trade more, log everything, then come back. Below 30, anything we tell you is just noise dressed up as data.
Your CSV must have these three columns: Trade, Outcome, R
Outcome values: win, loss, or breakeven
R values: positive numbers for wins (like 2 for 2R win), negative for losses (like -1 for 1R loss), 0 for breakeven
Don't have a CSV? Download a template to fill in:
The data you just discovered is only useful if you keep tracking. Every trade you log going forward sharpens your edge measurement and refines your sizing. The Kelly Engine does this automatically.
Open Kelly Engine →The value of this exercise is being honest about your trades. Most traders unconsciously skew their memory: bigger wins, smaller losses, "that wasn't really my system" excuses for losses.
If you want this tool to actually help, enter every trade including the ones you'd rather forget. The whole point is to see what you're really doing — not what you wish you were doing.