Seed & Planting Calculator

Plants and seeds from area and spacing

Spacing Input
Total plants
0
From spacing (row × plant) and area, get plant count and seeds needed.
Details
⚠️ This calculator is a simple reference tool based on general agricultural guidelines, recommended dilution ratios, mixing proportions and publicly available references. In real field conditions the appropriate dilution, dose and spray volume can vary with crop type and variety, growth stage, weather, soil, water quality, growing method and the quality/concentration of the materials used, so results may differ from actual needs. Pesticides, fertilizers, liquid fertilizers, microbial inputs, JADAM Sulfur, JADAM Wetting Agent and other natural/chemical materials can cause phytotoxicity, stunting, crop loss, disease or yield reduction through overuse, improper dilution or mixing with incompatible substances. Always check the product label, manufacturer guidance and relevant authorities, and test on a small area before full use. calcstool.com assumes no legal liability for any direct or indirect damage arising from manufacturing, diluting, mixing, fertilizing, spraying or other agricultural activity based on these results.
FAQ
How is plant count calculated?
Plants = area (㎡) ÷ (row × plant spacing). e.g. 100 pyeong (330.6㎡) at 30cm × 20cm fits about 5,510 plants.
How many seeds?
Total seeds = plants × seeds per plant. Direct sowing sometimes uses 2-3 seeds per spot.
How do I set spacing?
Follow the recommended spacing (row × plant) for your crop, shown on the seed packet or guide.
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Seed & Plant Spacing

Plant count is set by area and spacing (row × plant). Enter area and spacing for plants and seeds needed.

Method

Plants = area ÷ (row × plant), seeds = plants × seeds per plant.

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