Hay Inventory Calculator

Calculate how much hay you need for winter feeding. Determine total tons, bale count, and estimated cost based on herd size and feeding days.

Inputs

Herd Size

head

Average Animal Weight

lbs

Feeding Rate

% body weight

Feeding Days

days

Hay Waste

Tab to move between fields

Results

Total Tons

103.5 tons

≈ 17 elephants

Round Bales Needed

173

Daily Consumption1,500 lbs

Total Hay Needed207,000 lbs

Estimated Cost$10,380.00

How to Use This Calculator

Enter Herd Size, Average Animal Weight, and Feeding Rate.
Set Feeding Days and Hay Waste.
Review Total Tons (tons) and Round Bales Needed.
Use Daily Consumption (lbs) and Total Hay Needed (lbs) to inform your decision.
Use the chart to visualize the results and explore different scenarios by adjusting inputs.

How the result changes with Herd Size

Herd Size	Total Tons	Round Bales Needed
1,001	2,072.1 tons	3,454
3,501	7,247.1 tons	12,079
6,500	13,455 tons	22,425
9,000	18,630 tons	31,050

What each input means

Herd Size: Number of cattle to feed through winter.
Average Animal Weight: Average weight of your cattle (cow-calf pairs ~1,200 lbs).
Feeding Rate: Daily hay consumption as percentage of body weight (2-3% typical).
Feeding Days: Number of days you need to feed hay (winter feeding period).
Hay Waste: Percentage lost to trampling, weather, and spoilage (ring feeders ~5-10%, ground ~20-30%).

What each result means

Daily Consumption: Total pounds of hay consumed daily by the herd.
Total Hay Needed: Total pounds including waste.
Total Tons: Hay needed in short tons.
Round Bales Needed: Number of 1,200 lb round bales.
Estimated Cost: Estimated at $60 per round bale.

How this is calculated

Worked example, using the default values

Identify Input Parameters
4 parameters
Herd Size = 50, Average Animal Weight = 1200, Feeding Rate = 2.5, Feeding Days = 120 = 5 input(s) provided
Calculate Total Tons
Total Tons
103.5 = 103.5
Calculate Round Bales Needed
Round Bales Needed
173 = 173
Calculate Daily Consumption
Daily Consumption
1500 = 1500
Calculate Total Hay Needed
Total Hay Needed
207000 = 207000

Engine last updated August 5, 2026. Checked against 2 independently-derived tests — how we verify calculators.

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