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The Sims 3 Store to The Sims 4 Object Conversion Tutorial

I was recently trying to figure out how to convert Sims 3 Store Content to the Sims 4. I have finally found an easy way to do so. This is the second conversion tutorial that I have done, here you can find the Object Conversion Tutorial. We will be referencing that tutorial later.

This tutorial is for TS3 store content Objects, not CAS items.

As a reminder, before converting any items from the Sims 3 be sure to have the original creators permission.

For this tutorial you are going to need the following programs:

You must have The Sims 3 installed on your computer, you may also install any expansions or stuff packs you have, but the base game is required.

Optional Programs:
The following programs are not needed but will come in handy later in this tutorial.

Be sure to download and install these programs, if you have any questions on installing please ask.

I will be walking you through the conversion steps in sections, I will refer to other sections so please follow this guide step by step.

Sections are as follows:

  • Section One – Installing S3RC & Delphy’s Sims3Pack Multi Extractor
  • Section Two – Converting Sims3Pack files into .package files
  • Section Three – How to re-compress .packages with S3RC
  • Section Four – Checking .packages with S3PE (Optional)
  • Section Five – Opening final .package with TSR Workshop
  • Section Six – Follow Object Conversion Tutorial


In this section I will be walking you through the steps of installing the programs you will need for part of the tutorial.
I will not be teaching you how to install Sims4Studio or TSR Workshop. If you have any questions on installing those programs feel free to ask.
So, lets get started.
– The first program we will need is S3RC : TS3 Recompressor Tool.
When on the download page in the first forum post you will find the download. Select the version for your OS.
There are two options available as pictured below: x64 OS and x86 OS
Now that you have downloaded S3RC you need to unzip the .RAR file. (Using 7 Zip / WinRar etc.)
Once you extract the .RAR file, there will be two files inside: S3RC.exe and Decrapify.exe
Move the S3RC.exe to your desktop.
– The next program that we will need is Delphy’s Sims3Pack Multi Extractor.
This program is hosted on Mod the Sims, you must register for the site before you will be able to download.
Scroll down under the pictures and you will see a navigation menu, click ‘Files’.
Once you are on the files page you will click on the highlighted text next to the magnifying glass.
Always be sure if there is more that one download that you are downloading the most recent version.
Now that you have downloaded Delphy’s Multi Installer you need to unzip the .RAR file.
(Using 7 Zip / WinRar etc.)
Once you extract the .RAR file, move ‘Sims3Pack Muti Installer.exe’ to your desktop.
So now you should have two .exe files on your desktop: S3RC and Sims3Pack Multi Installer

(Don’t worry if they do not have icons.)
In this section I will be showing you how to convert Sims3Pack files into .package files with Delphy’s Sims3Pack Multi Extractor tool. The reason that we change the file type is to make it easier to convert to The Sims 4.
Important: Do NOT download more than one Sims3Pack at a time, or you will end up with a ton of .package files you will have to sort through.
Make sure you have installed Delphy’s Sims3Pack Multi Extractor and it is located on your desktop.
So, lets get started.
First, we need to get our Sims3Package files we want to convert.
For your purchased TS3 store content:
Login to your account on > Store Navigation > My Store Account > Purchase History
Under Purchase History you will find all of the items that you have purchased for TS3.
If you are converting a Sims3Pack or .Package file that has been created by someone other than Maxis make sure that you have permissions from the creator to convert. As some creators do not allow there content to be altered by others.
For this tutorial I will be converting a Sims 3 Store Set, so that you can see how to distinguish the files from one another in a pack.
I will be doing ‘The Director’s Set’.
1. Once you have found the item or set that you would like to convert hit download to install to your sims 3 game.
It will open the launcher for The Sims 3, as pictured below.
Once you see the item you downloaded go ahead and close The Sims 3 Launcher.
You do not have to  install the item into your Sims 3 game.
2. Next we need to create two new empty files on our desktop.
– Sims 3 Packs
– Converted .Package
All together we should have the following on our desktop:
3. Next we need to move our downloaded Sims3Pack to our new folder.
You will find your download under: Documents > Electronic Arts > The Sims 3 > Downloads
Move your download to the ‘Sims 3 Packs’ folder you created on your desktop.
4. Open ‘Sims3Pack Multi Installer’
You will see a window like the following open.
Step 1:
Hit ‘browse’ and find the ‘Sims 3 Packs’ folder you created on your desktop.
Step 2:
Hit ‘browse’ and find the ‘Converted .Package’ folder you created on your desktop.
Rename File Check-box:
If you are download a Sims3Pack with ONE item included(Example: A sims3pack with just a chair) check the ‘Rename Files’ box.
If you are downloading a Sims3Pack that is a SET with multiple items included DO NOT check this box.
When you have both of these paths selected to your folders, hit ‘Extract’.
Now you can Close Sims3Pack Multi Installer.
5. Go to the Converted .Package folder you created on your desktop.
You should now have .package files with crazy names like the following:
Each of of theses .package files are an item included in the ‘Directors Set’ I choose to download.
Meaning, that there are 8 items in this particular set.
6. You can now delete the Sims3Pack file inside of the ‘Sims 3 Pack’ folder on your desktop, you will no longer need it.
In this section I will be teaching you how to re-compress a .package file with S3RC so that It will be formatted correctly to open with TSR Workshop.
So, lets get started.
1. First be sure that you have downloaded S3RC and it is located on your desktop.
2. Open your ‘Converted .Package’ folder on your desktop.
(Created in Section Two of this Tutorial)
3. Select your .package file or files.
To select multiple files: Click the first item in the list > ‘Hold Shift’ > select the last item in the list.
Once everything is selected it will look like the picture below.
4. Drag and drop your .package files into the S3RC.exe on your desktop.
A Black ‘Command Line Box’ will appear on your screen.
Depending on how many .package files you are re-compressing it may only take a second and ‘flicker’ on the screen, or it may stay up for a few minutes. Just let the box do it’s thing and when it does go away you can Close the Converted .Package folder.
This section is Optional! This section is meant for those of you that have multiple Sims 3 .package files, meaning you have converted an entire set of items.
In this section I will teach you how to open you Sims 3 .package files with S3PE to locate the thumbnail of each of you .package files so you can distinguish which .package is which item.
If you do not have multiple .package files you can skip to SECTION FIVE.
So, Lets get Started.
1. Open S3PE
2. Go up to ‘File’ > ‘Open’
Navigate to your ‘Converted .Package’ folder on your desktop.
‘Open’  the .Package file you would like to check with S3PE.
I Recommend doing them in order starting at the top.
3. Scroll down until you see ‘THUM’, select it.
On the right side of the screen you will now see a thumbnail of the item.
4. Go up to ‘File’ > ‘Save As’
‘Select’ the .package file that you have open.
‘Delete’ the old .package name in the save box and type in a description that is helpful to you to distinguish the item.
5. Repeat steps 2-4 for all of your Sims 3 .package files, as desired.
In this section I will teach you how to open you final Sims 3 .Package file with TSR Workshop.
So, lets get started.
1. ‘Open’ TSR Workshop
2. Click ‘Create New Project’
3. Click ‘New Import’ from the Default options then click ‘Next’.
4. On the ‘Import from .package’ page, click ‘Browse’.
5. Navigate to your ‘Converted .Package’ file on your desktop.
Change the file type to .package, it will be default to TSR .wrk files.
6. You will now ‘Open’ the desired .package file you would like to import.
A window will pop up asking “Is this a Sims 4 package?” click ‘No’.
Important Note:
In the Projectype line, make sure it says ‘OBJECT’ then click ‘Next’.
In some Sims 3 Store sets ‘CLOTHING’ items are included. I am unable to help with clothing items at this time.
7. On the page called ‘Project Details’ just click ‘Next’.
This page does not matter since we will not be saving our TSR .wrk files.
8. The last page says ‘Finished’ just click ‘Next’.
Continue to my object conversion tutorial HERE in SECTION ONE, step 9 to finish your conversion.

About the author


I have been an artist most of my life and fell in love with The Sims franchise in 2000. Since then I have honed my artistic ability to make custom content for the Sims community. My hobbies include: painting, poetry, gaming, and cooking.