Tools
ECM & FCM Calculator
Energy Corrected Milk and Fat Corrected Milk. Enter milk weight, butterfat and protein to compare production on an even basis.
82.00ECM (lbs)Energy Corrected Milk
80.00FCM (lbs)3.5% Fat Corrected Milk
2.80Fat lbs
2.56Protein lbs
5.36Fat + Protein
9.57Component Efficiency, %Fat + protein lbs ÷ DMI
1.46ECM Feed EfficiencyECM lbs ÷ DMI
ECM = (0.327 × milk lbs) + (12.95 × fat lbs) + (7.65 × protein lbs)
FCM, 3.5% = (0.4324 × milk lbs) + (16.216 × fat lbs), the standard university extension formula (Gaines & Davidson 4% FCM, adjusted to a 3.5% basis)
Fat lbs = milk lbs × butterfat % ÷ 100. Protein lbs = milk lbs × protein % ÷ 100. Fat + protein = total component pounds.
Component Efficiency, % = (fat lbs + protein lbs) ÷ DMI × 100. ECM Feed Efficiency = ECM ÷ DMI.
Want help putting these numbers to work?
Production and component analysis is one of the services our consultants provide.

Cows Come First, LLCP.O. Box 447, Geneseo, NY 14454
(716) 640-5955 · gjar1262@aol.comA founding Legacy Business of Dairy NExT
(716) 640-5955 · gjar1262@aol.comA founding Legacy Business of Dairy NExT