Free Grain Conversion Calculator
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Online Grain Conversion Calculator
This free grain conversion calculator serves as an all‑in‑one bushel calculator and grain weight converter. It handles the core conversions that agricultural professionals need—turning a weight of corn into its equivalent bushels, revealing how many pounds are in a bushel of wheat, or answering “what does a bushel of soybeans weigh?” The tool is designed for farmers, traders, and anyone who regularly works with grain inventories or valuations. By eliminating manual lookup tables and repeated arithmetic, it speeds up daily tasks and reduces human error.
What Is a Bushel?
A bushel is a traditional English unit of volume that has been used for centuries to measure agricultural commodities. Because it measures volume rather than mass, the weight of one bushel is not constant—it depends on the density of the specific crop. For example:
- Shelled corn – 56 lb (25.4 kg) per bushel
- Wheat – 60 lb (27.2 kg) per bushel
- Oats – 32 lb (14.5 kg) per bushel
In volumetric terms, one bushel equals cubic inches (approximately cm³). The relationship between bushels and pounds therefore varies from crop to crop, which is why a dedicated bushel calculator or grain weight converter is such a practical tool.
How to Use the Grain Conversion Calculator
The interface lets you complete conversions in a few straightforward steps:
- Select your crop – Choose the commodity from an alphabetically sorted list that covers dozens of grains, seeds, and other agricultural products.
- Enter the amount – Type the quantity and indicate the unit (pounds, kilograms, tons, etc.). The bushel field updates instantly.
- Add pricing (optional) – Activate the “Calculate price per unit” option. You can then supply a price per unit of weight (e.g., per pound) or a price per bushel; the total value is computed automatically.
- Compare two grains (optional) – Expand the “Second commodity” panel to analyze a different crop side by side, which is useful for evaluating relative value.
The calculator also functions as a general weight converter, allowing you to switch between pounds, kilograms, and other mass units while always seeing the corresponding bushel amount.
Standard Bushel Weight Reference Table
The following table gives the standard weight of one bushel for a wide range of agricultural commodities, based on data from the U.S. Department of Agriculture. These factors are used as the defaults in the conversion tool.
| Crop | kg per Bushel | lb per Bushel |
|---|---|---|
| Alfalfa seed | 27.2 | 60 |
| Barley | 21.8 | 48 |
| Beans, Lima (dry) | 25.4 | 56 |
| Beans, Other (dry) | 27.2 | 60 |
| Bluegrass seed | 6.4–13.6 | 14–30 |
| Broomcorn seed | 20.0–22.7 | 44–50 |
| Buckwheat | 21.8 | 48 |
| Castor beans | 18.6 | 41 |
| Clover seed | 27.2 | 60 |
| Corn, Ear (husked) | 31.8 | 70 |
| Corn, Shelled | 25.4 | 56 |
| Corn Meal | 22.7 | 50 |
| Cottonseed | 14.5 | 32 |
| Cowpeas | 27.2 | 60 |
| Flaxseed | 25.4 | 56 |
| Hempseed | 20.0 | 44 |
| Hickory nuts | 22.7 | 50 |
| Hungarian millet seed | 21.8–22.7 | 48–50 |
| Kapok seed | 15.9–18.1 | 35–40 |
| Lentils | 27.2 | 60 |
| Malt | 15.4 | 34 |
| Meadow fescue seed | 10.9 | 24 |
| Millet | 21.8–22.7 | 48–60 |
| Mustard seed | 26.3–27.2 | 58–60 |
| Oats | 14.5 | 32 |
| Onion sets | 12.7–14.5 | 28–32 |
| Orchardgrass seed | 6.4 | 14 |
| Parsnips | 22.7 | 50 |
| Peanuts, unshelled, Virginia type | 7.7 | 17 |
| Peanuts, unshelled, Runners, southeastern | 9.5 | 21 |
| Peanuts, unshelled, Spanish | 11.3 | 25 |
| Peas, green, unshelled | 12.7–13.6 | 28–30 |
| Peas, green, dry | 27.2 | 60 |
| Perilla seed | 16.8–18.1 | 37–40 |
| Popcorn, on ear | 31.8 | 70 |
| Popcorn, shelled | 25.4 | 56 |
| Poppy seed | 20.9 | 46 |
| Rapeseed | 22.7–27.2 | 50–60 |
| Redtop seed | 22.7–27.2 | 50–60 |
| Rice | 20.4 | 45 |
| Rye | 25.4 | 56 |
| Sesame seed | 20.9 | 46 |
| Sorgo seed | 22.7 | 50 |
| Sorghum grain | 25.4 | 56 |
| Soybeans | 27.2 | 60 |
| Spelt | 18.1 | 40 |
| Spinach | 11.3 | 25 |
| Sudan grass seed | 18.1 | 40 |
| Sunflower seed | 10.9–14.5 | 24–32 |
| Timothy seed | 20.4 | 45 |
| Velvet beans (hulled) | 27.2 | 60 |
| Vetch | 27.2 | 60 |
| Wheat | 27.2 | 60 |
Data Reliability
The conversion factors used by this grain conversion calculator come from official USDA sources. While these standards are widely accepted, actual bushel weights can be influenced by moisture content, foreign material, and regional grading guidelines. Users who need exact trade values should verify against local specifications.
FAQ
1. How many pounds are in a bushel of corn?
A bushel of shelled corn weighs 56 pounds (25.4 kg). Choose 'Corn, Shelled' in the calculator and input any weight to get the equivalent bushels.
2. What is the weight of a bushel of wheat?
A bushel of wheat weighs 60 pounds (27.2 kg). The tool uses this factor to convert wheat weight to bushels automatically.
3. Why does a bushel of oats weigh less than a bushel of corn?
A bushel is a volume measure, so its mass depends on the density of the grain. Oats are less dense, giving about 32 lb per bushel, while corn yields 56 lb per bushel.
4. How does the calculator handle crops with a range of possible weights, like sunflower seed?
For commodities with variable bushel weights, the tool uses the midpoint or common average values from USDA data. The table in the reference section shows the full range for such crops.
How to Use
- Select your agricultural commodity from the list of 50+ options.
- Enter the amount and select the unit (bushels, pounds, or kilograms) you want to convert from.
- Click Calculate to see the equivalent in bushels, pounds, and kilograms.