Sunflower Seed Rate & Yield Calculator
Plan your sunflower programme in minutes. This free calculator estimates seed rate (kg/ha) from thousand seed weight, target plant density, germination and field loss — and projects total yield, gross revenue and crushable oil output for oil, high-oleic and confectionery hybrids.
Typical commercial sunflower is drilled at 55,000–70,000 plants/ha with 70 cm row spacing. High-oleic hybrids may target the lower end for larger heads and higher oil percentage.
How much sunflower seed do you need per hectare?
Sunflower seed rate is calculated as target plants per hectare divided by germination and field-establishment factors, multiplied by thousand seed weight. With 6 plants/m², 92% germination, 10% field loss and a TSW of 60 g, the calculator returns kg/ha, total seed volume, projected yield, gross revenue and crushable oil output.
- Formula: seed rate (kg/ha) = seeds/ha × TSW (60 g) ÷ 1,000,000.
- Typical density used here: 6 plants/m² on 70 cm rows.
- Reference yield 3 t/ha at about US$520/t.
- Oil content assumption 44% — oil output = yield × oil content.
Realistic — long-term regional average
How much sunflower seed do you need?
Defaults pre-filled for sunflower. Adjust TSW, target density, germination and field loss to match your supplier's technical sheet and local agronomy.
Project your sunflower harvest
Combine expected yield with market price and oil content to estimate gross revenue and crushable oil output for your area.
Indicative only
- This tool is indicative only.
- It is not financial advice.
- It is not agronomic advice.
- It is not engineering design.
- Final numbers require supplier, agronomist, engineer and local regulatory review.
SeedMatch Group is an independent agricultural project sourcing and RFQ platform. We are not a farm, seed producer, fertilizer manufacturer, irrigation manufacturer, greenhouse builder, EPC contractor, lender or financial advisor. Supplier and project partner outreach is handled only after a commercial project brief is reviewed.
Supplier and manufacturer listings are provided for research, transparency and discovery only. SeedMatch Group does not provide automatic buyer-supplier introductions. Every agriculture project request is reviewed manually by David / SeedMatch Group, and supplier introductions are made only after internal approval.
Source verified sunflower seed
Once you know your seed volume and target yield, a dedicated SeedMatchGroup sourcing specialist — supported by our proprietary matching technology — returns private, side-by-side quotes from independent breeders worldwide.