How fast do needs go down in The Sims 4?

Sims 4 needs decay: how fast hunger, energy and fun drop

A full Hunger bar empties in 16 Sim hours, Energy in 24, Bladder in 19.2, Fun in 22.4, Social in 38.4 and Hygiene in 48. Ages and traits change it: teens get hungry faster, and reward traits like Steel Bladder stop a need. Here are the rates and every modifier.

How fast each need drops

Need	Points a Sim hour	Full to empty (Sim hours)
Hunger	12.5	16
Bladder	10.42	19.2
Fun	8.93	22.4
Energy	8.33	24
Social	5.21	38.4
Hygiene	4.16	48

A need bar runs from 100 (full) to −100 (empty), and the game tunes its fall per Sim minute. Moodlets and objects can change it for a while. When Sims act on their own, how much a low need matters is on the autonomy page.

By age

Ages whose needs fall faster or slower than an adult's.
Need	Who	Decay ×
Bladder	Elder	×1.25
Bladder	Toddler	×1.5
Bladder	Infant	×2
Energy	Elder	×1.25
Energy	Toddler	×1.5
Energy	Infant	×2.5
Fun	Teen	×1.25
Fun	Toddler	×1.75
Fun	Infant	×2.1
Hunger	Teen	×1.2
Hunger	Infant	×1.5
Hygiene	Infant	×0.48
Hygiene	Toddler	×0.48
Hygiene	Teen	×1.2
Social	Teen	×1.2

Traits that change it

Below 1 slows the need; above 1 speeds it up.
Need	Who	Decay ×
Bladder	Steel Bladder	Never drops
Bladder	Fairy	×0.75
Energy	Never Weary	Never drops
Energy	Mark of the Night	×0.5
Energy	Seldom Sleepy	×0.5
Fun	Mark of the Forest	×0.5
Fun	Active Imagination	×0.75
Fun	Single and Lovin' It	×0.8
Fun	Angler's Tranquility	×0.9
Fun	Techie	×0.9
Fun	Technophobe	×1.1
Fun	Hungry for Love	×1.2
Fun	Party Animal	×1.2
Fun	Wiggly	×1.25
Hunger	Forever Full	Never drops
Hunger	Hardly Hungry	×0.5
Hunger	Mark of the Hunt	×0.5
Hunger	Fairy	×0.75
Hunger	Death by Hunger	×2
Hygiene	Forever Fresh	Never drops
Hygiene	Antiseptic	×0.5
Hygiene	Mermaid	×2
Social	Needs No One	Never drops
Social	Grouch	×0.5
Social	Independent	×0.5
Social	Loner	×0.5
Social	Mark of the Wolf	×0.5
Social	Childhood Naturalist	×0.6
Social	Active Imagination	×0.75
Social	Single and Lovin' It	×0.9
Social	Outgoing	×1.1
Social	People Person	×1.1
Social	Death by Emotional Starvation	×1.25
Social	Sunny	×1.25

Most ×0 traits are rewards from the satisfaction store. "Death by" traits belong to ghosts and depend on how the Sim died. Lifestyles like Techie come with Snowy Escape.

How fast each need drops

By age

Traits that change it

More from the Sims 4 database