TradeSize
Calculate exact lot size and manage risk before every trade
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March 17, 2026
TradeSize is live - free position sizing tool for traders
Hey IH, just launched TradeSize on ProductHunt today.
I built this after one bad position sizing decision wiped out three good trades in a single session. Tired of doing the math in my head before every trade.
What it does: enter your capital, risk % and stop loss and get exact quantity, margin required and R:R ratio instantly. Works for equity, futures, options, commodities and crypto.
Also has a trade journal tracking win rate, expectancy and R-multiple, plus a daily loss limit tracker with alerts.
Free, no login, all data stays in your browser.
Would love honest feedback from active traders. What is missing? What would make this part of your daily routine?
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