Bos taurus / Bos indicus • 5+ Tools Available
Cattle Calculators & Reference Tools
Shaeffer heart girth weight estimators, Average Daily Gain (ADG), dry matter intake (DMI), and 283-day gestation calendars.
All Cattle Calculators (3)
Select a verified tool to calculate nutritional requirements, body mass estimates, growth curves, or reproductive timelines.
weight-growthv1.0
Cattle Weight Calculator (Shaeffer's Equation)
Calculates beef and dairy cattle body weight in pounds or kilograms from heart girth and body length measurements.
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weight-growthv1.0
Calf & Cattle Average Daily Gain (ADG) Calculator
Computes rate of gain over a defined feeding period in pounds or kilograms per day.
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pregnancyv1.0
Cattle Pregnancy & Calving Due Date Calculator
Computes estimated calving date, dry-off date, and key pregnancy milestones for beef and dairy cows.
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Scientific & Biological Overview
Cattle body mass is estimated via Shaeffer equation: (Girth² × Length) ÷ 300. Daily dry matter intake averages 2.0% to 2.5% of body weight.
Frequently Asked Questions
What is the Shaeffer equation for cattle?
Shaeffers equation multiplies heart girth squared by body length (shoulder to pin bone) divided by 300 to estimate live weight in pounds.