Calculate optimal lot size based on balance, risk %, and stop loss. Supports Forex, Gold, Silver, and major crypto pairs.
Users
6
0 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#237K
#199K among extensions
Version
1.1
updated 1 Apr 2026
Users
monthly, 7 months
Latest, 19 Oct 2026:6 usersMove the mouse over the chart for any month
Ratings count
monthly, 7 months
Latest, 19 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About PosSize — Position Size Calculator
PosSize — Position Size Calculator
The fastest way to calculate your ideal lot size before every trade. Enter your account balance, risk percentage, and stop loss — PosSize instantly shows you the optimal position size, risk in dollars, potential profit, and R:R ratio.
Supports 4 instruments:
Forex — 8 major pairs
Gold & Silver
Crypto — major cryptocurrency pairs with leverage support
Custom — enter any pip value for any broker instrument
Key features:
Real-time calculation as you type — no need to click calculate
Risk bar indicator that changes color based on your risk level
Automatic warnings when lot size is too small, risk exceeds 2%, or R:R is unfavorable
Trade history log — save up to 50 calculations with one click, export to CSV
Persistent settings — saves your balance, risk %, leverage, and account currency
Built for serious traders who manage risk first.
No ads. No data collection. Works 100% offline.
Growth
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Users
Change
Ratings
Rating
7 days
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30 days
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6 months
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Chrome Web Store search rankings
Where PosSize — Position Size Calculator appears when people search the store, with the 30 day change