🚜 Field Capacity Calculator

Calculate acres per hour your machinery covers based on implement width, travel speed, and field efficiency.

Enter width, speed, and efficiency to get theoretical and effective acres/hour, acres/day, and hours per 100 acres.

📊 Results

Theoretical (acres/hr)-

Effective (acres/hr)-

Acres per Day-

Hours per 100 Acres-

🧮 Formula & How It Works

Theoretical (acres/hr) = (Width ft × Speed mph × 8.25) ÷ 1000

Effective = Theoretical × Efficiency%

📊 Calculation Example

20 ft at 6 mph: Theoretical = 990÷1000 = 0.99 acres/hr. At 80%: 0.79 acres/hr. 10-hr day = 7.9 acres/day. 100 acres = 126.6 hr.

📖 How to Use This Calculator

1. Working width. 2. Field speed. 3. Efficiency (70-85% tillage, 60-75% planting, 50-70% harvest). 4. Hours/day. Calculate.

🌾 About This Tool

Field capacity determines daily coverage, affecting planting/harvest windows and machinery cost per acre.

⚠️ Common Mistakes & Tips

Using theoretical for planning. Overestimating speed. Forgetting refill/unload time (15-30% downtime).

✓ Expert Reviewed: This calculator and its content have been reviewed by agricultural experts. Formulas are based on standard extension service recommendations.

📚 References & Sources

FAO (Food and Agriculture Organization) — Agricultural production and nutrition guidelines
USDA NRCS — Field Office Technical Guide and conservation practice standards
Land-Grant University Cooperative Extension System — crop and livestock recommendations

❓ Frequently Asked Questions

What is 8.25? ▼

5280 ft/mile ÷ 640 acres/sq mile, combined constant for width×speed to acres/hour.

What efficiency to use? ▼

Tillage 75-90%, planting 60-75%, spraying 65-80%, harvesting 50-70%.

Improve field efficiency? ▼

Larger fields, controlled traffic, bigger boxes/tenders, GPS guidance.