WaterCalcLabWater Tank Fill Time Calculator
Estimate refill time from current contents and a constant inlet flow.
Your result
Bars compare only results in the same unit group. They are normalized, not a time-series forecast.
Planning result based on your inputs.
How this tool works
Estimate refill time from current contents and a constant inlet flow.
time = max(0, tank capacity − current water)/flowExample calculation
The prefilled form is a worked example. Its base-unit inputs and expected outputs are shown below; use the reset button to restore it.
| Input | Example |
|---|---|
| Tank capacity | 3000 |
| Water volume | 500 |
| Measured total flow | 10 |
Frequently asked questions
How should I choose the inputs?
Use measurements and local records for the stated period. All preset values are illustrative examples, not recommendations.
What does this result leave out?
Current contents above capacity are invalid. Real inlet flow may vary with supply pressure; overflow protection remains necessary.
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Method version 1.0 · Last reviewed: 2026-10-10