The Hays Converter was developed by Senetor Harry Hays of Calgary, Canada in the mid 1970's. Cows weigh about 1,250 to 1,500 pounds at maturity and are generally black in color, with white markings, although red and white animals are not uncommon. The cattle are a mixture of Holstein, Hereford and Brown Swiss. They are hardy cattle adapted to range conditions in Western Canada with good feet and legs, and nice udder conformation. They are also known for their fertility, excellent milk production, and early sexual maturity.
Hays Converters are the only registered pure-bred cattle developed in Canada and are marketed throughout North America.