Horse Hay Feed Calculator: How Much Hay Does My Horse Need?

🐎 Horse Hay Feed Calculator

Calculate daily, monthly & annual hay requirements for your horse based on weight, activity & hay type

📋 Quick Presets
📝 Horse & Feed Details
✅ Hay Feed Calculation Results
🌾 Hay Type Reference — Digestible Energy & Feeding Rate
2.0%
Mixed Grass
BW/day (maint.)
2.0%
Timothy
BW/day (maint.)
1.5%
Alfalfa
BW/day (maint.)
2.0%
Orchardgrass
BW/day (maint.)
2.0%
Bermuda
BW/day (maint.)
2.0%
Brome
BW/day (maint.)
1.8%
Clover Mix
BW/day (maint.)
2.0%
Oat Hay
BW/day (maint.)
📊 Daily Hay Needs by Horse Weight
Horse Weight (lbs) Maintenance (lbs/day) Light Work (lbs/day) Heavy Work (lbs/day) Lactating (lbs/day) Weight (kg)
600 lbs12151818272 kg
800 lbs16202424363 kg
900 lbs1822.52727408 kg
1000 lbs20253030454 kg
1100 lbs2227.53333499 kg
1200 lbs24303636544 kg
1400 lbs28354242635 kg
1500 lbs3037.54545680 kg
1800 lbs36455454816 kg
📦 Bale Size & Coverage Reference
Bale Type Typical Weight (lbs) Weight (kg) Days for 1 Horse (1000 lb, maint.) Days for 5 Horses
Small Square Bale40–60 lbs18–27 kg2–3 days0.4–0.6 days
Medium Square Bale100–130 lbs45–59 kg5–6.5 days1–1.3 days
Large Square Bale800–1,100 lbs363–499 kg40–55 days8–11 days
Small Round Bale400–600 lbs181–272 kg20–30 days4–6 days
Large Round Bale800–1,200 lbs363–544 kg40–60 days8–12 days
Mini Round Bale100–200 lbs45–91 kg5–10 days1–2 days
📅 Annual Hay Tonnage by Herd Size
Herd Size Avg Horse Wt (lbs) Maintenance (tons/yr) Working (tons/yr) Metric Tonnes/yr
1 horse1,0003.654.563.31–4.13
2 horses1,0007.39.16.6–8.3
5 horses1,00018.322.816.6–20.7
10 horses1,10040.250.236.5–45.5
20 horses1,10080.3100.472.9–91.0
50 horses1,200219.0273.8198.6–248.3
💡 Hay Feeding Tips
⚖️ Always Weigh Your Bales: Bale weights vary widely. A "50 lb bale" can range from 40 to 70 lbs depending on moisture, density, and hay type. Use a hanging scale for accuracy — visual estimates lead to under- or over-feeding.
📊 Adjust for Body Condition Score: The 2% body weight rule is a starting point. Horses with a body condition score (BCS) below 4 may need 2.5–3% of their ideal weight. Horses with BCS above 6 should be fed 1.5–1.8% to promote gradual weight loss. Always monitor and adjust.

Horses usually consume hay during the whole year, except when their owners have access to good feed. Although feed helps, hay stays necessary when the meadows no longer grow or are covered by snow. Most horse owners give their creatures that type of hay that they learnt to use, together with anything available in the region.

Hay is made up of dried grass, clover, alfalfa or other feeds, or mixes from those. It works best for creatures that eat grasses, for instance horses. Only excellent grassy hay can fully satisfy the nutritious needs of adult horse, that does not work.

Feeding Hay to Horses

Daily horse must receive around two percentages of its body weight in feed. For average adult that means around four until eight pieces of hay a day. If one gives too little, horses risk belly diseases, as stomach ulcers or problems in the back intestine.

Alfalfa is the most commonly used plant for nutrition of horses, even though other plants as red clover, crimson clover, lespedeza, birdsfoot trefoil and peanut hay also offer prime nourishment. They usually have more botom quality and are used less commonly. Many owners mix grassy and plant hay to balance the energies, proteins and fibers, that their horses require.

Feeds give lot of fibers, that bacteria ferment mostly in the back intestine. That fermentation makes heat inside the body. Feeds rich in fibers make heat, that lasts long and helps to keep the core temperature stable.

The back intestine works like a boiler four the horse.

Horses necessarily require nibbling during the whole day. At creatures with insulin problems the grassy meal must be limited, and hay be available around the clock. Continuous access to fiber foods stops acids from reaching the sensitive belly lining, when the stomach empties.

It ensures also, that the germs in the back intestine stay fed and can work well.

Hays from grain crops, as oat hay, barley hay or mix from three species, should not pass half of the everyday amount of feed. The grains in them carry unknown levels of simple carbohydrates. Straw from wheat or oat has fewer calories and carbohydrates than hay, but they give horses time to chew and fill the belly like needed.

One can use straw to replace up to thirty percentages of the hay.

Hay that is slimy or covered in dust, can cause problems in breathing and digestion. Old hay, that lost its green colour, stays nutritious, if it smells good and is not dusty. Colour does not show the quality.

To test hay for its nutritious content is a wise idea, because it reveals, how many everyday needs it covers and whether one must add grains or more feed.

There are feeders done for little portions of hay, and others for whole packages. Slow feeders force horses to take only little hay at a time, while free choice ones let them eat freely. Feeders at groundlevel help normal wear of teeth, rather than raised.

Square packages share more easily for horses than round.

Horse Hay Feed Calculator: How Much Hay Does My Horse Need?

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