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Grain Conversion Calculator

Convert between bushels, pounds, kilograms, and metric tons for corn, wheat, soybeans, and other grains. Free online grain conversion calculator for agriculture.

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What is a Grain Conversion Calculator?

A grain conversion calculator converts between different units of grain measurement including bushels, pounds, kilograms, and metric tons. Since different grains have different standard weights per bushel, accurate conversion requires knowing the specific grain type and its standard test weight.

Farmers, grain traders, and agricultural professionals regularly need to convert between bushels, pounds, and metric tons for buying, selling, and transporting grain. Our calculator supports corn, wheat, soybeans, barley, oats, rye, sorghum, rice, sunflower, canola, and peanuts with their respective standard weights.

Standard Grain Weights (Test Weights)

Each grain has an official standard weight per bushel established by the USDA:

Grain Lbs per Bushel Kg per Bushel Bushels per Metric Ton
Corn 56 25.4 39.4
Wheat / Soybeans 60 27.2 36.7
Barley 48 21.8 45.9
Oats 32 14.5 68.9
Rye / Sorghum 56 25.4 39.4
Rice 45 20.4 49.0
Canola 50 22.7 44.1
Sunflower 25 11.3 88.5

Why Grain Conversion Matters

Accurate grain conversion is critical for several reasons:

  • Trading and Commerce: Grain is bought and sold in different units depending on the market. US markets typically use bushels, while international markets use metric tons. Accurate conversion ensures fair pricing.
  • Transportation Planning: Trucks, railcars, and barges have weight limits. Converting grain volume to weight helps plan loads and avoid overweight penalties.
  • Storage Management: Converting between bushels and metric tons helps reconcile inventory records and manage grain bin capacity effectively.
  • Crop Insurance: Yield records and insurance claims often require conversion between different units of measurement.
  • Regulatory Compliance: Export documentation and customs declarations require standardized units, typically metric tons.

Frequently Asked Questions

How many bushels of corn are in a metric ton?

One metric ton of corn equals approximately 39.4 bushels. This is based on the standard test weight of corn at 56 pounds per bushel (25.4 kg/bu). The exact number can vary slightly depending on grain moisture content and quality.

What is the difference between a bushel and a metric ton?

A bushel is a volume measurement used primarily in US agriculture for grain trading. A metric ton (1,000 kg) is a weight measurement used internationally. Since different grains have different densities, the number of bushels per metric ton varies by grain type.

How many pounds are in a bushel of wheat?

A bushel of wheat weighs 60 pounds (27.2 kg). This standard test weight is established by the USDA and applies to both wheat and soybeans. Barley weighs 48 lb/bu, oats weigh 32 lb/bu, and corn weighs 56 lb/bu.

Can I convert custom grain types?

Our calculator includes 10 of the most common grain and oilseed commodities. If you need to convert a grain type not listed, you can use the closest matching grain and adjust manually, or look up the specific test weight for your commodity.

Does moisture content affect grain weight?

Yes, moisture content significantly affects grain weight. Standard test weights are based on specific moisture levels (typically 15.5% for corn, 13.5% for wheat). Higher moisture grain weighs less per bushel, and the actual weight per bushel can vary from the standard. Official grading includes moisture adjustments.

How do I convert bushels to metric tons for crop insurance?

For crop insurance purposes, USDA uses standard conversion factors. Multiply bushels by the weight per bushel (e.g., 56 lb for corn) to get pounds, then divide by 2,204.62 to get metric tons. For corn: bushels / 39.37 = metric tons. For wheat: bushels / 36.74 = metric tons.

Calculate storage needs with the Grain Bin Calculator to estimate storage capacity, or use the Weight Converter for additional unit conversions.