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Realistic Aging - Updated

by TheLittleThings Posted 20th Feb 2017 at 12:03 PM - Updated 16th Aug 2018 at 1:18 AM by TheLittleThings : Updated for latest patch
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Update: The mod broke again, I've updated it. There are 2 versions available, one for those with cats and dogs installed and one for those without, only install one.

Update: The mod broke with the November patch and the cats and dogs expansion, I've now fixed it. I've also added cats and dogs, they work a little differently as their age is a range rather than one number, so each pet will live to a different age. Please see below for details of the pets lifespans.

Based on sims 3 seasons where 4 weeks equalled 1 sim year. Therefore sims will age 1 year every 28 sim days. This means if you keep track you can have real ages for all your sims and know when their birthday is, e.g. if a sim is born on a Sunday then every 4th Sunday will be their birthday. Maybe a bit long for legacy play but useful for storytelling purposes.

Old lifespan:
Baby - 2
Toddler - 7
Child - 13
Teenager - 13
Young adult - 20
Adult - 20
Elder - 10

Puppy - 1.5
Adult - 17-20
Elder - 5-7

Kitten - 1.5
Adult - 21-24
Elder - 6-8

New Lifespan:
Baby - 28 (0 years old)
Toddler - 84 (1-3 years old)
Child - 252 (4-12 years old)
Teenager - 140 (13-17 years old)
Young adult - 336 (18-29 years old)
Adult - 840 (30-59 years old)
Elder - 588 (60-80 years old)

Puppy - 28 (0-1 years old)
Adult - 224-252 (1-9 years old) Ages to elder anywhere between 9 and 10 years old
Elder - 56-112 (10-13 years old) Passes away anywhere between 11-13 years old

Kitten - 28 (0-1 years old)
Adult - 252-280 (1-10 years old) Ages to elder anywhere between 10 and 11 years old
Elder - 56-140 (11-15 years old) Passes away anywhere between 12-15 years old

The above numbers are based on the lifespan being set to normal. Short will halve the above numbers and long will double them.

This mod alters the sims.aging xml and will therefore conflict with any mod altering the same file.

Additional Credits:
With thanks to Sims 4 Studio.
Download files
Key: - File was updated after upload was posted
Filename - Tip: You can click the magnifying glass to see the archive contents Size Downloads Date
Lifespan_Mod.rar | Description: For those with cats and dogs installed. 11.9 KB 727 16th Aug 2018
Lifespan_Mod_Basegame.rar 8.6 KB 281 16th Aug 2018
Basic Download and Install Instructions:
1. Download: Click the File tab to see the download link. Click the link to save the .rar or .zip file(s) to your computer.
Read the upload description for installation instructions. If nothing else is specified, do the following:
2. Extract: Use WinRAR (Windows) to extract the .package file(s) (if included, ts4script as well) from the .rar or .zip file(s).
3. Cut and paste the .package file(s) (if included, ts4script as well) into your Mods folder
  • Windows XP: Documents and Settings\(Current User Account)\My Documents\Electronic Arts\The Sims 4\Mods\
  • Windows Vista/7/8/8.1: Users\(Current User Account)\Documents\Electronic Arts\The Sims 4\Mods\

Need more information?
  • Anyone can use both .rar and .zip files easily! On Windows, use WinRAR.
  • If you don't have a Mods folder, just make one.
  • Mod still not working? Make sure you have script mods enabled
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Expansion/Stuff packs required:
Sims 4

Built with Game Version:

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Type: Other

Tags: #aging, #realistic