"Lot Sizer Pro" logo
cBot
1.48K downloads
Version 2.0, Jun 2026
Windows, Mac, Web
4.5
Reviews: 11
"Lot Sizer Pro" uploaded image
"Lot Sizer Pro" uploaded image
"Lot Sizer Pro" uploaded image
"Lot Sizer Pro" uploaded image
"Lot Sizer Pro" uploaded image
236.39M
Traded volume
1.79M
Pips won
2
Sales
4.27K
Free installs

Professional Position Sizing Made Simple

Lot Sizer Pro is the ultimate risk management companion for serious traders who want to protect their capital and maximize their trading potential. This powerful cBot automatically calculates the perfect lot size based on your risk tolerance, ensuring you never risk more than you're comfortable with.

Key Features:

Interactive Drag Lines

  • Visual Trading Setup: Place your Stop Loss, Take Profit, and Entry levels by simply dragging interactive lines on your chart
  • Real-Time Calculations: Watch your risk/reward ratio update instantly as you move the lines
  • Market & Pending Orders: Switch between market orders and pending orders with one click

Advanced Risk Calculation

  • Percentage-Based Risk: Set your risk as a percentage of your account balance (0.01% - 100%)
  • Commission Integration: Automatically factors in broker commissions for accurate lot sizing
  • Spread Cost Analysis: Displays real-time spread costs to help you make informed decisions
  • Multi-Currency Support: Works with any forex pair, automatically handling currency conversions
  • Net $ R:R: See your true risk-to-reward ratio after all costs — commission and spread factored in

Smart Risk Management

  • One-Click Risk Adjustment: Increase or decrease risk percentage with dedicated buttons
  • Real-Time Updates: All calculations update automatically as market prices change
  • Account Protection: Prevents over-leveraging by calculating maximum safe position sizes
  • Line Position Memory: Line positions are saved per symbol so your setup is restored when switching between charts

Customizable Interface

  • Flexible Positioning: Place the control panel anywhere on your chart (top/bottom, left/right/center)
  • Color Customization: Customize line colors and interface appearance to match your style
  • Font & Size Options: Adjust text size and spacing for optimal visibility

Professional Display

  • Risk/Reward Ratio: See your potential risk-to-reward ratio at a glance
  • Profit Projections: View potential profits in both currency and percentage terms
  • Account Impact: Understand exactly how each trade affects your account balance

Live Positions & Orders Viewer

  • Tabbed Interface: Switch between Open Positions and Pending Orders with a single click
  • Paginated Navigation: Browse through multiple positions or orders using PREV / NEXT buttons
  • Full Position Breakdown: View Identity, Prices, Stop Loss impact, Take Profit impact, and Performance for every open position
  • Full Order Breakdown: View Identity, Prices, Stop Loss impact, Take Profit impact, Metrics, and expiry info for every pending order
  • Real-Time P/L & Pips: Color-coded green and red for instant reading
  • Account Impact %: See exactly what each position risks or gains relative to your account balance

Hotkey Trading

  • Configurable Hotkey: Set your preferred modifier key (Ctrl / Alt / Shift) and key combination to execute trades instantly from the keyboard
  • Live Status Display: The dashboard shows your configured hotkey combination and a real-time ● ACTIVE / ○ INACTIVE status so you always know if it registered successfully


How It Helps You:

Eliminate Guesswork — Never wonder "how much should I risk?" again
Protect Your Capital — Consistent risk management across all trades
Save Time — Instant calculations instead of manual math
Improve Discipline — Stick to your risk management rules effortlessly
Visual Clarity — Structured, color-coded dashboard built for fast reading
Full Trade Oversight — Monitor all open positions and pending orders without leaving the chart
Hotkey Trading — Execute trades instantly with a keyboard shortcut

Easy to Use:

  1. Install the cBot on your chart
  2. Click SHOW to display the interactive lines
  3. Drag the lines to set your Stop Loss, Entry, and Take Profit levels
  4. Adjust risk using the RISK+/RISK- buttons
  5. Click EXECUTE to place your perfectly sized trade

Pro Tips:

  • Use the ◉ MARKET / ◎ PENDING toggle to switch between order types — the Entry line appears automatically for pending orders
  • Watch the Net $ R:R value to evaluate true profitability after all costs
  • Enable commission factoring for the most accurate lot size calculations
  • Check the Hotkey Status on the dashboard to confirm your shortcut is active before trading
  • Customize all dashboard and button colors to match your chart theme perfectly
  • Line positions are saved per symbol — switch charts freely and come back to your exact setup

Transform your trading with professional-grade risk management. Download Lot Sizer Pro today and trade with confidence!

Trading profile
4.5
Reviews: 11
5
82 %
4
0 %
3
9 %
2
9 %
1
0 %
Customer reviews
June 10, 2026
This tool is incredibly useful. It allows traders to focus on entries, stop losses and take profits instead of wasting time calculating risk metrics. Unfortunately, my proprietary trading firm prohibits the use of publicly available third-party cBots, which is quite inconvenient. Would you mind sharing the compiled cBot file with me (source code is not required)? I only need to rename and recompile the file for my personal trading, an action permitted by my prop firm. Looking forward to your res
June 5, 2026
May 31, 2026
It great, buy it wont let you place an order for less than 10 lots no matter how you adjust it. So in reality, its useless.
January 7, 2026
Precise and easy to use! Love it!
October 26, 2025
can you please help me to start bot as when I clicked bot started but I wont be able to see my positions and unable to see its any profit or loss. can you help me to how to.
September 26, 2025
Nice
September 23, 2025
Very easy and helpful tool. Thank you very much.
September 10, 2025
It's free and helpful, but the SL and TP lines disappear immediately and I can't set them.
August 8, 2025
Very good. Mac version works great.
July 25, 2025
awesome work
July 24, 2025
Perfect
Prop
Forex
Indices
Commodities
Crypto
Stocks
Products available through cTrader Store, including trading bots, indicators and plugins, are provided by third-party developers and made available for informational and technical access purposes only. cTrader Store is not a broker and does not provide investment advice, personal recommendations or any guarantee of future performance.

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