Easy Lot Size Calculator for MT4
There is absolutely no reason to be manually inputting prices to calculate your lot sizes anymore. If you still do this, you know how big of a pain it is...
Sitting there, aching your brain, running formulas through your head to figure out just the right lot size to trade...
Or maybe you like to do fast trades, like scalping... this is EVEN more problamatic. It's almost impossible to do quickly and most of us know exactly what its like to miscalculate a lot size, leaving us way over leveraged.
Next thing you know, you feel trapped and don't want to close your losing trade and end up watching yet another account be blown into pieces.
Luckily, there are a few options for you...
1. You can get really good at calculating lots for each of the different instruments you trade. This is possible, but time consuming and not practical.
2. You can rent one of the many old EAs that still makes you input the price you want to open the trade at and the stoploss... Then you take the lots it tells you and manually place the trade. This is better than the first option, but still its way harder than it needs to be.
3. You can save time, energy and money by trying our EA that uses the easiest method on the market.
You simply click where the stoploss will be, then click Buy or Sell and the trade opens automatically, with your stoploss already placed for you.
Check out this 2 minute video for a quick break down of the Lot Size Calculator EA:
✅ Meet the Smartest Way to Size Your Trades — Instantly.
Every MT4 terminal has a certain tool built into it by default.
For many traders this tool just gathers dust, while for others, it's an every day tool they use.
Don't worry though, you don't need to know anything except how to click, drag and click again. Thats it. No more manual inputs.
Just click where you want your stoploss and the EA will calculate in real time, with every tick, the lot size to use. Then you simply click the buy or sell button and a trade will be opened, with the stoploss placed for you.
Is that easy or what?
That tool is the Fibonacci retracement tool... Found here in your mt4 terminal:
If you don't use the Fibonacci tool, feel free to remove all the inputs except for 0 and 1 and you're all set for using it as your lots calculator.
If you do use this tool regularily, you can keep using it as normal. The EA will only pick up the most recent tool on the chart, so as long as you're ahead of any other fib tools on your chart, that's the one the EA will use.
🎯 MT4 Position Sizing & Lot Calculator EA
Trade smarter with precise lot sizes, real risk control, and zero math.
Whether you’re trading Forex, crypto, commodities, or indices, this EA takes the guesswork out of calculating your position size — even across different instrument digits.
No more switching tabs to use clunky calculators. No more mistakes when rushing to place a trade. Just draw your stop-loss using MT4’s Fibonacci tool, and the EA handles everything else.
⚡ How It Works (In Seconds):
- Use MT4’s default Fibonacci retracement tool to mark your stop-loss zone.
- Draw upward for a buy setup
- Draw downward for a sell
- The EA reads the direction, your account risk % (set once), and instantly:
- Calculates the correct lot size
- Places the trade with stop loss
🔧 Key Tools Built In
- ✅ Auto Lot Size Calculation
Enter your preferred risk %, and the EA does the math — every time, on any instrument. - ✅ One-Click Trade Panel
Execute trades with pre-sized risk using built-in BUY and SELL buttons, right from the chart. - ✅ Auto Close at Profit % (Optional)
Lock in gains by setting a percentage target. The EA will close trades automatically when the target is reached. - ✅ Compound Growth Tracker
Visualize your journey. See how many successful trades it’ll take to reach your goal using compounding logic. - ✅ Trend Bar Overview
A clean multi-timeframe trend monitor at the top of your chart helps you stay aligned with market momentum. - ✅ Adjustable Mini-HUD Panel
You can move the trade panel (risk display, buy/sell buttons) higher or lower on the screen to suit your chart layout.
⚠️ Note: The on-chart buttons do not work in the Strategy Tester due to MT4 platform limitations. Use a live or demo chart for full access.
💡 Why Traders Love This EA
- No manual lot size calculations ever again
- Fast entries, smart risk — all with a single retracement
- Saves time and builds consistency
- Works across any MT4 instrument — no config required
- Designed for both beginners and advanced traders
We’re always here to improve. If you have any ideas or requests, feel free to reach out — we’re constantly evolving this EA based on real trader feedback.
Message us at support@mql4trader.com or from within the mql5.com marketplace.
🎁 Ready to Try It?
You’ll wonder how you ever traded without it.