Convert MT5 to TradingView: Complete Migration Guide

Why Traders Move From MT5 to TradingView

MetaTrader 5 runs Expert Advisors (EAs) written in MQL5 inside a terminal on your own machine or a VPS. TradingView runs Pine Script on TradingView's servers, in the browser. Traders move for a few common reasons:

• Charts in the browser. No terminal to install or keep running.
• Pine Script is smaller. A simple indicator or strategy often takes far fewer lines than the MQL5 version.
• Alerts with webhooks. A TradingView alert can call a URL, which is how most TradingView automation works.
• Futures instead of CFDs. Many MT5 brokers offer CFDs and spot forex. Traders who want to trade CME futures through a futures broker such as Tradovate need a different execution path.

There is no automatic, reliable MQL5-to-Pine converter. The two languages run on different models, and some EAs cannot be rebuilt in Pine at all. This guide shows what converts cleanly, what doesn't, how to do the conversion by hand or with an AI assistant, and how to check the result before you trust it.

MQL5 vs Pine Script: The Differences That Matter

Aspect	MQL5	Pine Script
Runs on	Your MT5 terminal	TradingView's servers
Execution model	Event handlers such as OnTick() and OnInit()	The script runs once per bar, on historical bars and then on live updates
Orders	Sends orders directly to your MT5 broker	Strategies simulate orders; real orders need alerts plus a webhook receiver
Language	C++-like, with classes, pointers and structs	Domain-specific, with user-defined types and methods but no low-level access
Files, DLLs, network	Supported (with permissions)	Not available
Indicator values	Handle from iMA() etc., read with CopyBuffer()	Functions such as ta.ema() return the value directly

The most important difference is the execution model. An EA reacts to every tick and can manage many orders and positions at once. A Pine strategy is evaluated per bar and, by default, calculates on the bar close. Logic that depends on tick-by-tick reactions or complex order books has to be redesigned, not just translated.

What converts well

• Indicators built from moving averages, RSI, MACD, Bollinger Bands, ATR and similar
• Entry and exit rules based on bar-close conditions
• Fixed or ATR-based stop loss and take profit
• Session and time filters

What is hard or impossible

• Grid and martingale EAs that hold many independent positions and orders
• Tick-level logic such as scalping on every tick or reading spreads
• DLL calls, file I/O, web requests and external libraries
• Hedging long and short positions on the same symbol at the same time
• Logic that reads account data from the broker, such as margin level

If most of your EA falls in the second list, conversion means designing a new strategy with similar intent. Budget time for that.

Three Ways to Convert

1. Rewrite by hand

Best for strategies you want to fully understand.

1. Write the strategy's rules in plain language (template below).
2. Map each MQL5 building block to its Pine equivalent.
3. Rebuild the logic in Pine, section by section.
4. Compare signals bar by bar against the original.

This is the slowest option but the most reliable, because you check every rule as you go.

2. AI-assisted conversion (ChatGPT, Claude and similar)

Best for getting a first draft quickly.

Paste the MQL5 code and ask for a Pine Script v6 equivalent. For example:

"Convert this MQL5 Expert Advisor to a Pine Script v6 strategy. Keep the entry, exit, stop and target rules exactly. List every part of the EA you could not convert and explain why."

Treat the output as a draft, not a conversion. General-purpose language models regularly:

• Mix up Pine versions, for example using study() or security() from older versions
• Invent functions or arguments that don't exist
• Quietly change logic, such as evaluating on every tick instead of bar close, or dropping a filter
• Mishandle bar indexing, so a condition uses the wrong bar
• Skip parts of the EA they can't express and not tell you

Asking the model to list what it could not convert helps. Validating the result, as in Step 6 below, is still required.

3. Hire a developer

Best for complex EAs where the logic must be preserved. Freelance developers who know both MQL5 and Pine can also tell you early which parts need redesign. Ask for a written list of behavior differences with the delivered script.

Step-by-Step Conversion

Step 1: Document the strategy

Before touching code, write down exactly what the EA does:

Strategy: [Name]
Timeframe and symbols: [...]
Entry long: [Conditions]
Entry short: [Conditions]
Exit long: [Conditions]
Exit short: [Conditions]
Stop loss: [Logic]
Take profit: [Logic]
Position sizing: [Rules]
Filters: [Sessions, news, spreads, ...]
Max positions: [...]

This document is also what you compare the converted strategy against.

Step 2: Map MQL5 building blocks to Pine

MQL5	Pine Script v6
iMA(_Symbol, _Period, 21, 0, MODE_EMA, PRICE_CLOSE) + CopyBuffer()	ta.ema(close, 21)
iRSI(...) + CopyBuffer()	ta.rsi(close, 14)
iMACD(...) + CopyBuffer()	ta.macd(close, 12, 26, 9)
iBands(...) + CopyBuffer()	ta.bb(close, 20, 2)
iATR(...) + CopyBuffer()	ta.atr(14)
CTrade::Buy() / CTrade::Sell()	strategy.entry()
CTrade::PositionClose()	strategy.close()
Stop loss / take profit on the position	strategy.exit() with stop and limit
AccountInfoDouble(ACCOUNT_EQUITY)	strategy.equity
PositionSelect() + PositionGetDouble(POSITION_VOLUME)	strategy.position_size
TimeCurrent() + TimeToStruct()	time, hour, minute, dayofweek

Step 3: Convert the indicator logic

MQL5 creates indicator handles once and reads values from buffers:

int fastHandle, slowHandle;

int OnInit() {
   fastHandle = iMA(_Symbol, _Period, 9, 0, MODE_EMA, PRICE_CLOSE);
   slowHandle = iMA(_Symbol, _Period, 21, 0, MODE_EMA, PRICE_CLOSE);
   return INIT_SUCCEEDED;
}

bool CrossedUp() {
   double fast[], slow[];
   ArraySetAsSeries(fast, true);
   ArraySetAsSeries(slow, true);
   if (CopyBuffer(fastHandle, 0, 1, 2, fast) < 2) return false;
   if (CopyBuffer(slowHandle, 0, 1, 2, slow) < 2) return false;
   // fast[0] / slow[0] = last closed bar, fast[1] / slow[1] = the bar before
   return fast[0] > slow[0] && fast[1] <= slow[1];
}

Pine Script calculates the values directly on each bar:

//@version=6
strategy("EMA Cross", overlay = true)
fast = ta.ema(close, 9)
slow = ta.ema(close, 21)
crossedUp = ta.crossover(fast, slow)

Step 4: Convert the order logic

MQL5 with the standard CTrade class:

#include <Trade/Trade.mqh>
CTrade trade;

void OnTick() {
   if (!PositionSelect(_Symbol) && CrossedUp()) {
      double ask = SymbolInfoDouble(_Symbol, SYMBOL_ASK);
      trade.Buy(1.0, _Symbol, ask, ask - StopDistance, ask + TargetDistance);
   }
}

Pine Script:

stopDistance = input.float(10, "Stop distance")
targetDistance = input.float(20, "Target distance")

if crossedUp and strategy.position_size == 0
    strategy.entry("Long", strategy.long)

if strategy.position_size > 0
    strategy.exit("Exit", "Long", stop = strategy.position_avg_price - stopDistance, limit = strategy.position_avg_price + targetDistance)

Note what changed. The EA runs CrossedUp() on every tick, but the function reads closed bars, so its answer only changes when a new bar starts. The Pine strategy acts on bar close by default. Keep that equivalence in mind whenever the original reads the current, unfinished bar.

Step 5: Handle the remaining differences

• Bar indexing. With ArraySetAsSeries(..., true), MQL5 index 0 is the newest element. In Pine, close is the current bar and close[1] the previous one.
• Position sizing. Lot sizes on an MT5 CFD account don't translate to futures contracts. Decide the contract size again for the instrument you will actually trade.
• Multiple positions. Pine strategies hold one net position per symbol. Pyramiding is limited by the pyramiding setting.
• Instruments. A forex EA on EURUSD has to trade a futures contract such as 6E if you plan to execute on a futures broker. Contract size, tick value, trading hours and costs all differ, so re-test.

Step 6: Validate the conversion

1. Plot both. Put the converted indicator on a TradingView chart and compare values with MT5 on the same symbol and timeframe. Small differences from different data feeds are normal. Large ones mean a logic error.
2. Match signals. Pick 20–30 historical signals from the EA and check that the Pine strategy fires on the same bars.
3. Compare backtests carefully. MT5's Strategy Tester and TradingView's Strategy Tester model fills, spreads and costs differently, so results won't match exactly. Look for the same trades, not the same profit figure.
4. Forward test on a demo account before any real money.

After Conversion: Automating Your Pine Strategy on Tradovate

Once your strategy runs in TradingView, it still only simulates orders. To trade it for real, you need TradingView alerts and a service that turns them into broker orders.

If you trade futures on Tradovate, Roboquant Connect does this step. It does not convert MQL5 code; it takes the alerts your Pine strategy already fires and places the matching orders on your Tradovate accounts:

1. Connect your Tradovate account with OAuth in the Connect app.
2. Build the alert in the Alert Builder and copy the webhook URL and the generated JSON.
3. Add an alert on your Pine strategy in TradingView (Essential plan or higher, with 2FA enabled), paste the URL in Notifications and the JSON in Message.
4. Check the first orders in Executions, and set the kill switch, allowed symbols and daily limits before going live.

The details are in:

• The Complete Guide to TradingView Webhooks
• How to Connect TradingView to Tradovate
• TradingView Alert JSON Format Reference

If you want to keep trading on MT5, you need a different kind of tool: a bridge that takes TradingView webhooks and places orders in an MT5 terminal. Connect does not do that.

What It Costs to Run on TradingView

• TradingView: webhook alerts need Essential or a higher plan (pricing).
• Execution service: Roboquant Connect costs $39.90/month after a 7-day free trial.
• Broker: Tradovate charges commissions plus exchange and NFA fees (pricing). Every trade pays these costs, including trades placed by automation.

On MT5, the costs are usually a VPS to keep the terminal running and your broker's spreads or commissions.

Conclusion

Most MT5 indicators and simple bar-based EAs can be rebuilt in Pine Script. Complex EAs usually need a redesign. Whatever method you use, including AI assistance, validate signal by signal and forward test on a demo account.

Once the Pine strategy fires alerts you trust, Roboquant Connect can send them to your Tradovate accounts. Start with the 7-day free trial or see how TradingView to Tradovate automation works.

Automated trading involves risk of loss.