I finally did the calculations because everyone was confused on how old the characters of Vikings were. These are the correct ages.

Ragnar (born in 763 AD) Age 31 (season 1 started in 793 AD)

Lagertha (born in 763 AD) Age 31 (season 1 started in 793 AD)

Rollo (born in 762 AD) Age 32 (season 1 started in 793 AD)

Aslaug (born in 772 AD) Age 21 (season 1 started in 793 AD)

Bjorn (born in 781 AD) Age 12 (season 1 started in 793 AD)


Ragnar Age 35 (season 2 started in 797 AD; four year time jump)

Lagertha Age 35 (season 2 started in 797 AD; four year time jump)

Rollo Age 36 (season 2 started in 797 AD; four year time jump)

Aslaug Age 25 (season 2 started in 797 AD; four year time jump)

Bjorn Age 16 (season 2 started in 797 AD; four year time jump)


ragnar age 39 (season 3 started in 801 AD)

lagertha age 39 (season 3 started in 801 AD)

rollo age 40 (season 3 started in 801 AD)

aslaug age 29 (season 3 started in 801 AD)

bjorn age 20 (season 3 started in 801 AD)


ragnar age 43 (season 4 started in 805 AD)

lagertha age 43 (season 4 started in 805 AD)

rollo age 44 (season 4 started in 805 AD)

aslaug age 33 (season 4 started in 805 AD)

bjorn age 24 (season 4 started in 805 AD)


ragnar age 55 (dies) (season 4b started in 817 AD; twelve year time jump)

lagertha age 55 (season 4b started in 817 AD; twelve year time jump)

rollo age 56 (season 4b started in 817 AD; twelve year time jump)

aslaug age 45 (dies) (season 4b started in 817 AD; twelve year time jump)

bjorn age 36 (season 4b started in 817 AD; twelve year time jump)


lagertha age 56 season 5

rollo age 57 season 5

bjorn age 37 season 5


lagertha age 58 (dies) season 6

rollo age 59 season 6

bjorn age 39 season 6

Community content is available under CC-BY-SA unless otherwise noted.