Calculate position size, take profits, and P&L from simple inputs.
Users
5
+1 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#276K
#230K among extensions
Version
1.0.0
updated 5 Nov 2025
Users
monthly, 12 months
Latest, 18 Oct 2026:5 usersMove the mouse over the chart for any month
Ratings count
monthly, 12 months
Latest, 18 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 Lot Size Calculator
A modern, offline Chrome extension that calculates position size, take-profit levels, and P&L using Excel-equivalent formulas. Features a clean light theme with real-time calculations and input persistence.