Feed Mixer Capacity Calculator

Size TMR mixers and feed wagons based on herd requirements and feeding management.

Animal Type

Number of Animals

Average Body Weight (lbs)

DMI (% of Body Weight)

Typical: 2.5-4.0%

Ration DM (%)

As-fed dry matter %

Feedings Per Day

Number of Feeding Groups

Separate pens/groups fed different rations

Mixer Type

Ration Density (lb/cu ft)

Typical TMR: 10-15 lb/cu ft

Fill Capacity (%)

Recommended: 70-85%

Mixer Sizing Results

Recommended Mixer Size

Total DMI (all animals) -

As-Fed Weight Daily -

Volume Daily -

Weight Per Batch -

Volume Per Batch -

Batches Per Day -

Minimum Mixer Volume -

Rated Capacity Needed -

Est. HP Requirement -

Tractor PTO Minimum -

Mix Time Per Batch -

Total Feeding Time/Day -

Tip: Size mixer for 70-85% fill for optimal mixing. Underfilling or overfilling reduces mix quality.