Seed Calculator

Agricultural & Garden Seed Calculator

Calculate bulk seeding rates, row plant spacing, pure live seed (PLS), and seed bag requirements

Crop / Seed Preset

TKW / TGW (Grams) Weight of 1,000 seeds

Total Land Area

Area Unit

Target Plants / m² ~1,214,057 plants/ac

Germination Rate (%)

Purity Rate (%)

Field Survival (%) Expected field establishment

Total Seed Weight Required

325.2 kg

716.9 lbs (3.25 Quintals)

Seeding Rate per Area 65.0 kg / acre 160.7 kg / hectare

Total Seed Count 8.13 Million Individual seeds demanded

Target Establishment Pool 6.07 Million Expected surviving plants

Overall Emergence Efficiency 74.97% Germ × Purity × Survival

Plot Length

Plot Width

Dimension Unit

Row Spacing

In-Row Plant Spacing

Spacing Unit

Seeds per Hole / Station Thin to 1 after emergence

Buffer / Thinning Allowance

Total Seeds Needed

9,262 Seeds

Plant Capacity: 4,210 Plants (21 Rows)

Number of Rows 21 Rows Across 50 ft width

Plants per Row 200 Plants / row Along 100 ft length

Plant Density 36,678 / acre 0.84 plants / sq ft

Total Linear Row Length 2,100 ft Cumulative furrow distance

Desired PLS Weight Actual live seed required

Weight Unit

Tag Germination (%)

Tag Purity (%)

Commercial Bag Size lbs per bag

Bulk Seed Purchase Required

61.92 lbs

Buy 2 Full Bags (100 lbs total)

Pure Live Seed (PLS) Index 80.75% Purity % × Germination %

Inert / Non-Viable Weight 11.92 lbs Chaff, weed seed, dormant bulk

Exact Bag Count 1.24 Bags Unrounded purchase fraction

Surplus Live Seed +30.75 lbs Buffer remaining from 2 bags