Convert Pine Script to ThinkScript: A Practical Guide

So you've been building some cool indicators in Pine Script on TradingView, and now you're thinking "Hey, what if I could get this working on Thinkorswim too?" Yeah, I totally get it. You're not the first person to want to move their Pine Script stuff over to ThinkScript - it's actually pretty common.

Here's the thing though: it's not like copy-pasting from one platform to another. These two languages are related but definitely not twins. Let me walk you through how to actually make this happen without pulling your hair out.

If you're just getting started with Pine Script, you might want to check out our best Pine Script course guide first to make sure you've got the basics down before diving into platform conversions.

What's Different Between These Two?

Okay, first things first - Pine Script and ThinkScript are like cousins who grew up in different countries. They're related, but they definitely have their own personalities.

Pine Script is TradingView's baby. It's pretty friendly to beginners and has this huge community where people share scripts like crazy. It's mainly focused on making indicators and strategies look good on charts.

ThinkScript? That's Thinkorswim's thing, and it's a bit more... let's say "serious." It can do some pretty advanced stuff like custom scanners and even some automated trading (though TD Ameritrade keeps that on a pretty tight leash). It also handles options data really well, which is cool if you're into that.

The catch? You can't just take Pine Script code and plop it into ThinkScript. The syntax is different, some functions work differently, and some things that work in one just don't exist in the other.

How to Actually Do This Conversion

1. Figure Out What You Actually Have

Before you start coding, sit down with your Pine Script and really understand what it's doing. What's the main logic? What variables are you using? Are there any Pine Script-specific functions that might not exist in ThinkScript?

Basically, strip it down to the core idea. Some Pine Script features just don't have ThinkScript equivalents, so you might need to get creative or find workarounds.

2. Fire Up Thinkorswim

Open up Thinkorswim and head over to the Studies section. You'll want to create a new custom study - that's where you'll build your ThinkScript version. It's pretty straightforward once you find the "Create" button.

3. Start Translating the Basics

This is where it gets interesting. Those input statements in Pine Script? They work pretty similarly in ThinkScript, but the syntax is a bit different.

In Pine Script you might have something like length = input(14), but in ThinkScript it becomes input length = 14;. Notice that semicolon - ThinkScript is pickier about those.

For variables that change over time, ThinkScript has this rec keyword that's pretty handy. It's like Pine Script's variable reassignment but more explicit about it.

4. Hunt Down Function Equivalents

This is probably where you'll spend most of your time. Pine Script's sma() becomes ThinkScript's SimpleMovingAvg(). The rsi() function becomes RSI(). Some are obvious, others... not so much.

That security() function in Pine Script that lets you grab data from other timeframes? In ThinkScript, you'll be dealing with aggregation periods and it's a bit more involved. Google is definitely your friend here.

5. Test Everything (Seriously, Everything)

Once you think you've got it working, test it like crazy. Put it on different charts, different timeframes, compare it side-by-side with your original Pine Script version.

Things that worked perfectly in Pine Script might act weird in ThinkScript, and that's normal. Debug, tweak, repeat until it looks right.

Quick Example to Get You Started

Let's say you've got this super simple moving average in Pine Script:

// Pine Script
study("Simple MA")
length = input(14)
plot(sma(close, length))

Here's how that looks in ThinkScript:

# ThinkScript
input length = 14;
plot SMA = SimpleMovingAvg(close, length);

See the differences? ThinkScript wants that semicolon, the input syntax is flipped around, and sma() becomes SimpleMovingAvg(). Not too bad, right?

Some Friendly Advice

Don't try to do everything at once. Start with something simple, get it working, then move on to the more complex stuff. Trust me, you'll save yourself a lot of headaches. Speaking of keeping things simple, our Pine Script scalping strategy guide might give you some ideas for basic strategies to practice conversion with.

The internet is your friend. There are some great communities out there, especially the useThinkScript forum. Those folks are super helpful when you get stuck on something weird. Stack Overflow is good too, but the ThinkScript-specific forums usually have better answers.

Check GitHub. Seriously, someone has probably already converted something similar to what you're working on. Why reinvent the wheel?

When in doubt, ask. If you're really stuck on a complex script, there are people who do this conversion stuff professionally. Sometimes it's worth paying someone to save you days of frustration.

Explore your options. If you find the conversion process too frustrating, you might want to look at Pine Script alternatives that could work better for your specific needs, or consider whether sticking with TradingView vs other platforms makes more sense for your trading style.

Look, converting between these platforms isn't always straightforward, but it's definitely doable. Take your time, don't be afraid to experiment, and remember that every expert was once a beginner who refused to give up. You've got this!