Estimate crop days, fertilizer value, harvest count, and profit quickly. Compare costs, yields, and margins. Plan faster routes before every season ends successfully.
Growth reduction = floor(Base growth days × speed percentage).
Final growth days = Base growth days − growth reduction.
Harvest count = Available days ÷ final growth days for replanted crops.
Net profit = Gross crop value − seed costs − fertilizer costs.
Enter the normal crop growth days first. Add the season days, planting day, crop value, seed price, fertilizer price, and farm plot count. Select the Speed-Gro type. Tick Agriculturist if your farmer has that profession. Press calculate. The result appears above the form.
| Crop | Base Days | Fertilizer | Boost | New Days |
|---|---|---|---|---|
| Starfruit | 13 | Deluxe Speed-Gro | 25% | 10 |
| Pumpkin | 13 | Speed-Gro | 10% | 12 |
| Melon | 12 | Hyper Speed-Gro | 33% | 9 |
Speed-Gro can change a full season plan. A few saved days may create one more harvest. That extra harvest can turn an average crop into a strong money choice. This calculator helps you check that choice before spending gold.
Every Stardew season has limited days. Planting late can reduce harvests. Faster growth helps, but it does not always pay for itself. Expensive fertilizer can hurt profit when crop value is low. That is why cost comparison matters.
The calculator includes seed cost, fertilizer cost, crop price, plot count, yield, and regrowth. These inputs give a fuller result than growth days alone. You can compare normal planting with Speed-Gro, Deluxe Speed-Gro, or Hyper Speed-Gro.
Some crops keep producing after the first harvest. For those crops, Speed-Gro mainly affects the first growth period. The regrow time is entered separately. This makes the estimate more practical for crops like blueberries, cranberries, and peppers.
The Agriculturist profession adds another growth bonus. This can make fast crops very powerful. It can also shorten long crops enough to fit another harvest. Use the checkbox to test that build.
The result shows saved days, final growth time, harvest count, gross value, costs, profit, and ROI. A high profit is useful. A high ROI means each gold spent works harder.
Run several tests before planting. Change the planting day, fertilizer price, and crop value. Compare the final profit. The best answer is often different for early game, mid game, and late game farms.
It estimates crop growth days, harvest count, revenue, cost, profit, and ROI when using Stardew Valley Speed-Gro options.
No. It mainly shortens the first growth period. Regrow crops still use their normal repeat harvest interval.
It adds an extra growth bonus for farmers who selected the Agriculturist profession. Use it only when your character has that profession.
Yes. Run the form with different fertilizer selections. Then compare growth days, harvests, profit, and ROI.
Fertilizer costs gold. If it does not create enough extra value, the final profit can decrease.
Enter zero for single-harvest crops. Enter the repeat harvest interval for crops that keep producing.
Yes. Enter any plot count. The calculator multiplies crop value, seed costs, and fertilizer costs by plot count.
Yes. It helps compare timing and profit before planting. It is useful for season planning and crop route testing.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.