The cattle weight gain calculator estimates average daily gain (ADG), how many days until market weight, and total feed required for a beef feeding operation. Enter starting weight, target weight, feed type, and feed conversion ratio to plan your feeding program and estimate costs.
Cattle Gain & Feed Calculator
How to Use the Cattle Weight Gain Calculator
Planning a beef feeding program requires knowing your target average daily gain (ADG), the time required to reach market weight, and total feed needs for your herd. This cattle weight gain calculator uses standard feed conversion ratios for different ration types to estimate all three values, plus estimated feed cost when you enter a price per ton.
Average Daily Gain by Feed Type
High-grain feedlot rations achieve the best ADG — typically 3.0–3.5 lbs/day for well-managed cattle. Corn silage and grain mix diets average 2.5–3.0 lbs/day. Hay-based forage diets average 1.5–2.0 lbs/day, and pasture-based programs average 1.5–2.5 lbs/day depending on forage quality and season. These are starting points; actual ADG depends on genetics, sex, health status, and feed management.
Feed Conversion and Total Feed
Feed conversion ratio (FCR) is the pounds of dry matter feed needed per pound of gain. Grain rations typically achieve FCR 6.0–7.5; hay diets average 8.0–10.0; pasture is difficult to measure but is typically 15–25 (all forage). Total feed is calculated as: (target gain × number of head × FCR). Multiply by feed moisture factor to get wet tons for silage or fresh forage.
Frequently Asked Questions
Is this cattle weight gain calculator free?
Yes, completely free with no signup. All calculations run locally in your browser.
What is a good average daily gain for beef cattle?
A good ADG for beef cattle on feed is 2.5–3.5 lbs/day (1.1–1.6 kg/day). Grass-fed cattle typically gain 1.5–2.5 lbs/day. Calves on good pasture may gain 1.5–2.0 lbs/day. High-performance feedlot cattle can reach 3.5–4.0 lbs/day with premium rations.
What is feed efficiency ratio for cattle?
Feed conversion ratio (FCR) for beef cattle is typically 5.5–8.5 lbs of dry matter feed per lb of gain. Grain-based diets achieve 5.5–7.0. Hay-based diets are less efficient at 7–10. Lower FCR numbers mean better efficiency.
How long does it take to finish a beef steer?
A calf weaned at 500 lbs needs 200–280 days on feed to reach 1,200 lbs market weight, depending on genetics, feed type, and ADG. On a high-grain ration with 3.0 lbs/day ADG, that is about 233 days. On grass with 2.0 lbs/day, it takes about 350 days.
What affects cattle daily gain most?
The main factors are: diet energy density (grain vs. hay vs. silage), breed and genetics, starting weight, health status, and season. Grain-based diets provide significantly more energy per pound than forage, leading to much higher ADG. Implants and ionophores can improve ADG by 5–15% in feedlot settings.