Auger Calculator

How to Use This Auger Calculator

Enter your bin height, truck discharge height, horizontal distance, and auger specifications to get accurate length, power, and time estimates for your grain handling operation.

• Silo eave height: Height from ground to the bin's eave (where grain enters)
• Discharge height: Height of truck/trailer inlet (typically 10-14 ft)
• Horizontal distance: Distance between bin and truck
• Auger diameter: Select your planned or existing auger size
• Grain type: Affects weight and flow characteristics

Auger Length Calculation Formula

Required length = √(Height difference² + Horizontal distance²) + 3 ft (for slope and connection)

The calculator rounds up to the nearest standard auger length (common sizes: 31, 36, 41, 51, 53, 63, 64, 73, 74, 83, 84, 94, 105, 114, 125 ft).

Power Requirements (Horsepower)

Horsepower is calculated based on auger length, diameter, and flow rate. General formula: HP = (Length × FlowRate × GrainFactor) / 4000. For reference:

• 6" auger: 3-5 HP for 30-50 ft
• 8" auger: 5-10 HP for 40-70 ft
• 10" auger: 10-20 HP for 50-90 ft
• 12" auger: 15-30 HP for 60-100+ ft

Why Choose Our Auger Calculator?

• ✅ Free and unlimited use — no registration required
• ✅ Complete estimates: length, power, flow rate, time, and cost
• ✅ US units and currency (feet, bushels, HP, USD)
• ✅ Mobile-friendly design — works on any device
• ✅ Based on real agricultural engineering formulas

Frequently Asked Questions

• What is the best auger length for a 20 ft bin? — For a 20 ft eave height and 12 ft truck height with 10 ft distance, you need approximately 30-35 ft auger.
• How much horsepower do I need for a 60 ft auger? — An 8" auger at 60 ft requires 7-10 HP; a 10" auger requires 12-18 HP.
• How fast does a grain auger move grain? — 8" auger: 1500-2500 bushels per hour; 10" auger: 3000-5000 bu/hr.
• What is the slope requirement for augers? — Minimum slope of 1-2 inches per foot for proper grain flow.