Flow Measurement · Free Calculator
Flow Totalizer and Fill Time Calculator
Turn a flow rate into a total over time, or work out how long a given volume takes to transfer at a known flow.
Total volumeFill timeBatch timeAny units
h
Total volume200 m³
Total volume200,000 L
Total volume52,834 US gal
How this result was calculated
- V = Q × t = 25 m³/h × 8 h = 200 m³
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Totalizer Formulas
V = Q × t t = V ÷ Q
Worked example
25 m³/h for an 8 hour shift delivers 200 m³. Filling a 50 m³ tank at the same rate takes 2 hours.
Key insight: when comparing a meter totaliser with a tank level change, account for temperature: liquids expand, so the same mass occupies more volume when warm.
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Frequently Asked Questions
How does a flow totalizer work?
It integrates the flow rate over time, adding up the volume in each small interval.
Why does my totaliser not match the tank gauge?
Common causes are temperature differences, entrained air, meter accuracy at low flow and level gauge resolution on large tanks.
Can I use this for batching?
Yes, to estimate batch times. For control, use the meter pulse output or totaliser with a preset counter.
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