A livestock feed calculator determines daily feed requirements based on animal type, body weight, and life stage or purpose. Whether you raise cattle, horses, sheep, goats, pigs, or chickens, knowing the correct hay-to-grain ratio and total dry matter intake keeps your animals healthy and your feed budget on track. Enter your herd details below to get daily and period totals with cost estimates.
Feed Ration Calculator
Average body weight per animal
Total head in herd or flock
Dry Matter Intake Reference
| Animal | Life Stage | DMI (% BW) | Hay : Grain |
|---|---|---|---|
| Beef Cow | Maintenance | 2.0% | 90:10 |
| Beef Cow | Lactating | 2.5% | 60:40 |
| Growing Cattle | 500-800 lb | 2.75% | 70:30 |
| Feedlot | Finishing | 2.5% | 20:80 |
| Horse | Maintenance | 1.75% | 100:0 |
| Horse | Light Work | 2.0% | 70:30 |
| Horse | Heavy Work | 2.5% | 60:40 |
| Growing Foal | Weanling | 2.75% | 70:30 |
| Sheep/Goat | Maintenance | 2.75% | 90:10 |
| Ewe | Lactating | 4.0% | 60:40 |
| Lamb/Kid | Growing | 3.75% | 70:30 |
| Pig | Growing (50-100 lb) | 5.5% | 0:100 |
| Pig | Finishing (100-250 lb) | 3.5% | 0:100 |
| Sow | Lactating | 4.5% | 0:100 |
| Chicken | Laying Hen | ~0.25 lbs/day | Complete feed |
How to Use the Livestock Feed Calculator
Feeding livestock the right amount is critical for animal health, growth performance, and managing your farm budget. Whether you are running a cow-calf operation, finishing steers in a feedlot, or keeping a small flock of sheep, knowing the daily dry matter intake and hay-to-grain ratio for each animal class helps you plan purchases, budget feed costs, and avoid waste. This livestock feed calculator uses standard nutritional guidelines to estimate daily rations and total feed needs for any herd size and feeding period.
Step 1: Select the Animal Type
Choose the species and life stage from the dropdown. The calculator covers beef cattle (maintenance, lactating, growing, feedlot), horses (maintenance, light work, heavy work, growing foal), sheep and goats (maintenance, lactating, growing lambs), pigs (growing, finishing, lactating sow), and laying hens. Each selection pre-loads the correct dry matter intake percentage and hay-to-grain ratio.
Step 2: Enter the Animal Weight
Type the average body weight of your animals in pounds. For cattle, this might range from 500 pounds for young stockers to 1,400 pounds for mature cows. For chickens, the weight field is not needed because layers use a fixed daily intake of 0.25 pounds per bird regardless of body weight. The daily feed ration calculator multiplies body weight by the DMI percentage to determine total daily dry matter needs.
Step 3: Set Herd Size and Period
Enter the number of animals and the feeding period. You can specify the period in days, weeks, or months. Feeding 10 cows for 90 days is a common winter feeding scenario. The tool multiplies daily per-head requirements by the number of animals and days to calculate total hay and grain needed for the entire period.
Step 4: Enter Feed Prices
Input your local hay and grain prices in dollars per ton. The defaults are $200 per ton for hay and $300 per ton for grain, which are reasonable national averages. Replace these with your actual prices for an accurate cost estimate. The calculator converts the total feed from pounds to tons, then multiplies by your price per ton.
Step 5: Review Results
Click "Calculate Feed Requirements" to see daily per-head amounts, total feed for the period, the hay-grain split, and total cost. The summary cards show the quick numbers, while the detailed breakdown table lets you verify every line. Use this data for hay procurement planning, grain orders, and budgeting your operation.
Understanding Dry Matter Intake
Dry matter intake (DMI) is expressed as a percentage of body weight. A 1,000-pound beef cow on maintenance eats about 2.0% of her body weight per day, which equals 20 pounds of dry matter. Lactation and heavy work increase DMI because of higher energy demands. The hay-to-grain ratio then determines how that intake is split between forage (fiber) and concentrate (energy). Maintenance animals thrive on mostly hay, while finishing or lactating animals need more grain to meet their energy requirements.
FAQ
Is this livestock feed calculator free to use?
Yes, the livestock feed calculator is completely free with no signup, no account, and no hidden fees. All calculations run locally in your browser so your farm data stays private on your device.
Is my farm data safe when I use this tool?
Absolutely. Every calculation runs locally in your browser using client-side JavaScript. No animal weights, herd sizes, or cost data are ever sent to a server or stored anywhere.
How does the calculator determine daily feed amounts?
Feed amounts are based on dry matter intake (DMI) as a percentage of body weight, which is the standard method used by animal nutritionists and university extension services. The percentage varies by animal type and life stage, such as 2.0% for a beef cow on maintenance versus 2.5% for a lactating cow.
What is the difference between hay and grain in a feed ration?
Hay (forage) provides fiber and bulk, while grain provides concentrated energy. Maintenance animals need mostly hay (90-100%), while working, lactating, or finishing animals need more grain (up to 80% for feedlot cattle). This calculator automatically adjusts the hay-to-grain ratio based on the animal's life stage.
Can I calculate feed for chickens and other poultry?
Yes, the calculator includes laying hens with a fixed daily intake of approximately 0.25 pounds of feed per bird per day. Poultry use a complete feed rather than a hay-grain split, so the calculator shows total feed only for chickens.
How accurate are the feed cost estimates?
Cost estimates depend on the hay and grain prices you enter. The calculator uses your custom prices per ton to compute total feed cost. Actual costs vary by region, season, and feed quality. Update the price fields to match your local feed prices for the most accurate estimate.
Should I consult a veterinarian about feed rations?
Yes. This calculator provides general estimates based on standard nutritional guidelines. Individual animals may have different needs based on breed, health, body condition score, climate, and activity level. Always consult a veterinarian or animal nutritionist for a ration tailored to your specific herd.
What does dry matter intake (DMI) mean?
Dry matter intake is the amount of feed an animal consumes after all water is removed. Since hay contains about 10-15% moisture and grain about 10-12%, actual as-fed amounts are slightly higher than dry matter amounts. This calculator shows dry matter intake, which is the industry standard for ration planning.