Grain Conversion - Test Weight and Density Conversion

A grain conversion calculator turns any quantity of a stored grain or oilseed into a different unit using the USDA test weight per bushel, so a bushel of wheat, a kilogram of corn, and a cup of oats all map to one answer for the same commodity.

• • Read a grain scale ticket: Translate printed pounds into bushels for a known commodity, or vice versa, using the standard test weight.
• • Convert a bin volume to weight: Pair the tool with a measured bin volume to turn a known cubic-foot figure into a shipment weight in pounds or kilograms for a specific grain.
• • Switch a recipe or feed ration between cups and grams: Use the bushel test weight as the implied density so 1 cup of oats becomes the same number of grams a kitchen scale would read.
• • Compare metric and US contract units: Convert hectoliters, kilograms, or US bushels into a single unit before comparing yield or price data across regions.

The word bushel is older than the metric system and still anchors the US grain trade, so farm records mix pounds, bushels, and cups. A grain conversion calculator is the simplest way to keep those numbers consistent across documents, scales, and contracts.

Pair this tool with the Grain Bin Calculator to turn a measured bin volume into a weight in pounds or kilograms for a specific commodity.

The tool first looks up the standard test weight for the chosen grain, then converts the input amount to a canonical intermediate (kilograms for weight inputs, liters for volume inputs) before scaling it into the requested target unit. Weight to volume and volume to weight conversions use the implied density that comes from the bushel test weight.

• amount: Numeric quantity in the source unit. Must be a non-negative number.
• fromUnit: Source unit. Eleven choices spanning weight (mg, g, kg, oz, lb) and US dry volume (US cup, US dry quart, US peck, US bushel) plus metric volume (liter, hectoliter).
• toUnit: Target unit. Same eleven choices as the source.
• testWeight: Standard bushel weight in pounds, from the USDA ERS commodity table.
• density: Implied density in kg per liter, computed as testWeight (lb) * 0.45359237 / 35.23907016688.

The calculator never assumes a generic 60 pounds per bushel. The test weight is part of the input, so oats (32 lb/bu) and wheat (60 lb/bu) return different pound answers for the same bushel input.

According to NIST Special Publication 811, one US bushel equals 2,150.42 cubic inches (35.23907016688 liters) and one pound is exactly 0.45359237 kilograms

The same volume to weight logic drives the Cups to Pounds Converter, which supplies an ingredient density instead of a bushel test weight.

A US bushel looks like a single number on a scale ticket, but it bundles four ideas: a fixed dry volume, a per-commodity test weight, an implied density, and customary subdivisions.

The bushel subdivisions are exact: a peck is 8.80976754172 L and a dry quart is 1.101220942715 L, so cross-unit math is a one-line calculation.

For weight-only math that does not need a test weight, the Weight Converter handles pounds, ounces, kilograms, grams, and tons directly.

The form recalculates on every change, so there is no separate submit step.

1. 1 Pick the grain or oilseed: Open the Grain type menu and choose the commodity that matches what you are measuring. The label shows the test weight, so the choice also fixes the implied density.
2. 2 Enter the amount: Type a numeric amount in the Amount field. Use a positive number; 0 or blank resets the result.
3. 3 Choose the source and target units: Set From unit to whatever the input is in (bushels, pounds, cups, liters, hectoliters, milligrams) and To unit to whatever you need as output. The two menus share the same list of eleven units.
4. 4 Read the converted value and the density: The primary result card shows the converted number, the unit label changes to match your To unit choice, and the secondary row shows the implied density in kilograms per liter.
5. 5 Use Reset to start over: Press the Reset button to clear the form, restore the wheat defaults, and re-run the calculation.

Try a quick check: pick Wheat, leave From unit on US bushel, and enter 5. The tool returns 136.0777 kg. Switch To unit to US cup and the same 5 bushels of wheat comes out as 734.1473 cups, because 5 bu x 35.2391 L/bu = 176.1954 L, and 176.1954 L / 0.24 L per cup = 734.1473 cups.

For finer-grained US volume math inside a cup, the Cooking Measurement Converter resolves tablespoons, teaspoons, fluid ounces, and milliliters from the same kind of input.

The tool saves the mental arithmetic that bushel conversions usually require and makes the answer easy to verify. The benefits come from the underlying data, not from marketing language.

• • Commodity-specific accuracy: Each grain carries its own USDA test weight, so the converted pounds or kilograms reflect the actual commodity rather than a generic average.
• • Bidirectional weight and volume math: Inputs and outputs can be any of eleven units, including mixed weight and volume, so the same page handles scale tickets, bin measurements, recipes, and metric contracts.
• • Visible implied density for sanity checks: The result panel shows the density in kg per liter so a user can confirm the conversion is consistent with the test weight, not just a black-box number.
• • Aligned with NIST and USDA references: Every factor traces to NIST Special Publication 811 or the USDA commodity table, so the answer matches a printed conversion table.
• • Real-time updates: The form recalculates on every keystroke and on every menu change, so a user iterating through several unit pairs does not need a separate submit step.

For farm records, the tool turns a printed ticket into the same number an elevator would list.

When the next step is grain quality rather than weight, the Dry Matter Calculator applies a moisture percentage to convert wet grain to a dry-matter basis, which pairs with the bushel test weight for forage and feed analysis.

The calculator uses the standard test weight, but real grain varies. Several factors shift the actual weight per bushel away from the table value, and a few approximations matter when the input or output crosses the weight to volume line.

• • The tool uses the standard USDA table test weight, not a measured sample test weight, so a grain lot that runs light or heavy will not be reflected in the result.
• • Metric densities implied by the bushel test weight are an approximation for the bulk density of grain in a bin, tote, or rail car.

For commercial settlement, the next step is a measured test weight from a representative sample. The table value is a planning number, not a contract number.

According to USDA Economic Research Service, the standard test weight is 60 lb per bushel for wheat, 56 lb for shelled corn, 60 lb for soybeans, 32 lb for oats, 48 lb for barley, 56 lb for rye, 56 lb for sorghum, 45 lb for rough rice, and 52 lb for buckwheat

When the conversion is part of a yield estimate, the Corn Yield Calculator takes the bushel figure and projects it into bushels per acre for a recorded field area.