How Heavy Is a House Mouse?
a House Mouse weighs about
21 g (0.0463 lb)
Typical range: 12 g – 30 g.
Using a log scale so small objects stay visible — the numbers stay real.
- a gallon of water3.78 kg
1 US gallon (3.785 412 L) of pure water at 4 °C
- an iPhone 160.17 kg
iPhone 16, Apple technical specifications
- a large egg0.05 kg
one USDA large egg, edible portion with the shell removed
- a house mouse0.021 kg
adult house mouse (Mus musculus), body mass range 12–30 g
- You
Open full comparison → to add more objects on one scale.
Put it in perspective
- About 2.4× a large egg
- About 8.1× an iPhone 16
- About 180× a gallon of water
Why weights differ
Body mass varies with subspecies, habitat (house vs. feral) and season; the University of Michigan range 12–30 g covers wild adults.
Sources
[1] University of Michigan Museum of Zoology
Mus musculus (house mouse) | Animal Diversity WebMuseum / zoo / university
“They range from 12 to 30 g in weight ... Range mass 12.0 to 30.0 g 0.42 to 1.06 oz”
Value as published: 12.0 to 30.0 g · accessed 2026-11-11.
Last updated 2026-11-11.Report a correction (please include a source link).
Related objects
- a ruby-throated hummingbird3.6 g (0.00794 lb)
- a chicken2.58 kg (5.69 lb)
- a bald eagle4.3 kg (9.48 lb)
- a domestic cat4.5 kg (9.92 lb)
- an emperor penguin35 kg (77.2 lb)
- a chimpanzee50 kg (110 lb)
Frequently asked questions
How much does a house mouse weigh?
a House Mouse weighs about 21 g (0.0463 lb) — adult house mouse (Mus musculus), body mass range 12–30 g.
How much is a house mouse in pounds and ounces?
0.0463 lb, which is 0.741 oz. In metric terms: 0.021 kg.
Is a house mouse heavier than a large egg?
No. a House Mouse weighs about 21 g (0.0463 lb), while a large egg is about 50 g (0.11 lb) — roughly 1/2.38.
Why do sources give different weights?
Body mass varies with subspecies, habitat (house vs. feral) and season; the University of Michigan range 12–30 g covers wild adults.
Where does this number come from?
Every source is listed at the bottom of this page with publisher, link, access date and a verbatim quote. Numbers are only published when a qualifying source can be verified.