Seeding Rate Calculator

Total seed equals the field size in acres times your seeding rate in pounds per acre, rounded to two decimals. For example, 40 acres at 30 pounds per acre needs 1200 pounds of seed.

Rates vary widely by crop, variety, row spacing, and field conditions. This tool is a planning aid, so use the rate from your seed tag or local extension guidance for the crop and stand you are targeting.

Seed tags often state a rate that already assumes typical germination. If you want a cushion for a rough seedbed or poor stand, raise your rate before you enter it here rather than expecting the tool to pad it.

If you enter a price per pound, the cost is the total pounds times that price, rounded to two decimals. Leave the price field blank and the cost box shows a dash, so you see pounds only.

The tool works in acres and pounds. If you plan in kilograms per hectare, convert to pounds per acre first, since 1 kg per hectare is about 0.892 pounds per acre. The arithmetic itself is unit agnostic.

Not directly. This tool uses a weight rate. To convert a seeds per acre target to pounds, divide it by the seeds per pound printed on the tag, then enter that pound figure as your rate.

Pure live seed accounts for purity and germination below 100 percent, common in forages and cover crops. If your tag lists PLS, bump the bulk rate up so the live seed lands at your target, then enter that higher bulk rate here.

No. The calculation runs entirely in your browser with simple multiplication, so your acreage, rates, and prices never leave your device and nothing is saved.

It rounds both the total pounds and the total cost to two decimal places. Whole numbers show without trailing zeros, so 1200 pounds displays as 1200 rather than 1200.00.