Rat and Mice Weights

Average and Range Weights

Male and Female Wistar and Sprague Dawley Rats from 3 to 12 Weeks held at ARC (updated yearly)

Average and Range of Weights (g) of Commonly Used Strains of Mice*

StrainSex21 DAYS42 DAYS56 DAYS84 DAYS
MICEAVRANGE (g)AVRANGE (g)AVRANGE (g)AVRANGE (g)
A/JM107.9 - 13.91714.8 - 19.72018.0 - 22.82421.1 - 26.6
F86.0 - 10.81513.0 - 17.81714.1 - 19.91916.5 - 21.6
BALB/cM109.0 - 11.01915.0 - 21.02118.0 - 24.02926.5 - 32.0
F98.0 - 10.01511.0 - 20.01714.0 - 21.02321.0 - 25.3
CBA/CaHM86.3 - 9.52017.5 - 22.22220.0 - 24.43122.0 - 34.0
F86.2 - 8.61713.1 - 19.11816.0 - 19.12721.0 - 30.0
C57BL/6JM86.0 - 10.02118.0 - 23.02321.0 - 25.02724 - 29.0
F76.0 - 10.01512.6 - 17.11816.0 - 19.02018.0 - 22.0
DBA/2M96.8 - 11.02112.9 - 24.42414.8 - 28.82719.7 - 31.6
F97.2 - 10.61812.1 - 20.12015.5 - 22.22520.0 - 31.4
SJL/JM127.6 - 16.01916.0 - 21.02017.7 - 22.62824.5 - 31.5
F107.5 - 12.81615.0 - 17.71816.0 - 20.32518.0 - 27.5
B6D2F1M96.0 - 12.02220.0 - 27.02624.0 - 28.03024.0 - 34.0
F95.0 - 10.01916.0 - 22.02120.0 - 24.02320.0 - 25.0
* Please note: All weights given are an approximation only. If weights are critical, please place an order for weights only. Additional charges will apply.

Average and Range of Weights (g) of Rats held at the ARC*

STRAINSEX21 DAYS42 DAYS56 DAYS84 DAYS
RATSAVRANGEAVRANGEAVRANGEAVRANGE
BNM4532.0 - 54.0124102.0 - 153.0193163.5 - 210.0264220.0 - 311.0
F4430.0 - 52.59787.0 - 117.5129109.0 - 147.0167147.0 - 180.0
F344M3124.0 - 39.010589.7 - 133.0181155.0 - 209.0206182.7 - 238.0
F3022.2 - 38.78661.5 - 110.0126105.0 - 156.0206182.7 - 238.0
SDM4534-55229181-266280229-328425367.0-492.0
F4032.0 - 49.0168149.0 - 196.0191169.0 - 224.0252219.0 - 291.0
SHR/NM3527.0 - 43.0141123.0 - 158.0218193.0 - 243.0294261.0 - 328.0
F3626.0 - 46.0116101.0 - 132.0149134.0 - 165.0186167.0 - 206.0
WKYM3824.0 - 52.0132104.0 - 159.0217182.0 - 252.0291258.0 - 324.0
F3624.0 - 48.011394.0 - 133.0159139.0 - 178.0208185.0 - 232.0
WISTARM7766.0 - 96.0273249.0 - 337.0305274.0 - 375.0389363.0 - 409.0
F6250.0 - 75.5136113.0 - 170.0156131.0 - 191.0201172.0 - 248.0
* Please note: All weights given are an approximation only. If weights are critical, please place an order for weights only. Additional charges will apply.
H-2aA/J
H-2bC57BL/6J, C57BL/10ScSn, 129/SvJ-ter
H-2dBALB/c, DBA/2J,
H-2kCBA/CaH, B10.BR
H-2qDBA/1J, FVB
H-2sSJL/J
* From yearly updated growth charts.