Garden Yield Calculator
Estimate harvest yield in lbs or kg from plant type and count.
Covers tomatoes, peppers, zucchini, cucumbers, and 20+ vegetables with yield per plant.
Vegetable garden yield estimation helps gardeners plan food production, calculate cost savings versus store-bought produce, and size their plots efficiently. Yields vary significantly by plant variety, soil quality, climate, spacing, and care — but standard benchmarks provide reliable planning targets.
Yield formula: Expected Yield = Growing Area (sq ft) × Yield per sq ft (lb)
Yield per square foot by crop (square-foot gardening method):
| Vegetable | Plants per sq ft | Yield per sq ft |
|---|---|---|
| Tomatoes (indeterminate) | 1 per 4 sq ft | 5–15 lb/4 sq ft |
| Zucchini | 1 per 9 sq ft | 8–12 lb/9 sq ft |
| Bush beans | 9 per sq ft | 0.5–1 lb/sq ft |
| Lettuce | 4 per sq ft | 0.25–0.5 lb/sq ft |
| Carrots | 16 per sq ft | 0.5–1 lb/sq ft |
| Peppers | 1 per sq ft | 0.5–2 lb/sq ft |
| Cucumbers | 1 per 2 sq ft | 2–5 lb/2 sq ft |
| Kale | 1 per sq ft | 0.5–1.5 lb/sq ft |
| Strawberries | 4 per sq ft | 0.5–1 lb/sq ft |
Cost savings formula: Annual Savings = Expected Yield (lb) × Average Retail Price ($/lb) − Input Costs
Input costs include: seeds, seedlings, soil amendments, fertilizer, water, pest control.
Water usage estimate: Water per Week (gallons) = Growing Area (sq ft) × 0.623 (equivalent to 1 inch of rainfall per week)
Worked example: A 4×8 ft raised bed (32 sq ft) planted with: 4 tomato plants (32 sq ft of staking area), 1 zucchini plant (9 sq ft), and green beans filling remaining space.
Tomato yield = 4 plants × 10 lb avg = 40 lb Zucchini = 10 lb Beans = 23 sq ft × 0.75 lb/sq ft = 17 lb Total yield ≈ 67 lb
At average retail prices (~$2.50/lb blended): $167.50 value Input costs (soil, seeds, fertilizer): ~$45 Net savings ≈ $122.50 per season from a 32 sq ft bed — and yields improve each year as soil matures.
How we build and check this calculator
This calculator runs entirely in your browser, so the numbers you enter stay on your device. The math behind it is written by hand and tested against worked examples and standard references before the page goes live.
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