Scalping on MT4 and tired of calculating lot sizes manually?
If you trade fast… this will change everything.
Hi, this is Jordan from Mql4trader.com — and today I’m sharing a tool that has become absolutely essential in my scalping workflow. If you scalp on the 1-minute or 5-minute charts, you already know how fast price moves… and how hard it is to calculate correct position sizes in real time.
Every scalper understands the truth: without precise risk control, your strategy simply won’t survive long-term.
But trying to do math while price is flying? Impossible. That’s why I started asking myself:
“Is there a way to automate lot-size calculation on MT4 so scalpers never have to think about risk during execution?”
And that’s when the idea hit me…
As a Fibonacci-based trader, I realized that MT4’s built-in Fib tool could be repurposed into the ultimate position-sizing engine for scalpers.
By drawing the Fibonacci tool — even if you don’t use Fibonacci in your strategy — the EA reads the start point and current price and instantly calculates your exact lot size based on your risk percentage.
So if you set your risk to 2.5%, the EA will automatically compute the ideal lot size for your scalp trade. Draw the Fib upward → it prepares a buy lot. Draw it downward → it prepares a sell lot.
The Fib tool is **not** used for Fibonacci analysis — it simply gives scalpers a fast, movable stop-loss reference point. Wherever you drag it, the EA recalculates your lot size *on every tick*. Perfect for scalping Forex, indices, gold, crypto — anything with fast movement.
This tool completely transformed my scalping. I no longer second-guess my risk. No spreadsheets. No calculators. No slowing down. Just pure, fast execution — with risk fully controlled in the background.
For scalpers who use fixed R:R ratios, I even added an optional button that closes trades automatically at a set profit percentage. For example, if you risk 2.5% and want a quick 5% scalp, the EA will close your position the moment that target is hit.
You can adjust your risk, profit target, and whether to enable the InProfitExits feature based on your scalping style.
Here’s a simple video walkthrough showing the whole system:
Honestly — if you’re a scalper, this tool removes one of the biggest bottlenecks in fast trading. But don’t take my word for it… try it yourself.
Download my “FREE Easy Lot Size Calculator for MT4” here:
https://www.mql4trader.com/expert-advisors/lotsize-calculator/AutoLots-One-ClickTradingtrial.ex4
Installation in MT4: File → Open Data Folder → MQL4 → Experts Paste AutoLots-One-ClickTradingtrial.ex4 Right-click the Navigator “Expert Advisors” list → Refresh If it doesn’t appear, restart MT4.
Once installed, attach the EA to any chart and begin calculating lot sizes instantly by drawing your Fibonacci tool.
Just draw and trade — the EA handles the math automatically.
If you have any questions, message me at support@mql4trader.com
Full version available here:
https://www.mql5.com/en/market/product/142902
NEW FEATURE FOR SCALPERS:
Introducing the “Grab Fib” function. Name any one of your Fib tools “FIB,” and when you hit the button, the EA instantly pulls that Fib to the front of your chart for immediate use — perfect for fast entries.
