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Bubble-O-Meter Flow Calculator

  1. Select the volume of the measurement you are taking from the dropdown menu.
  2. Record the time (in seconds) it takes for the bubble to travel the selected measurement volume.
  3. Click the Calculate Flow button to see your flow rate.
  4. To adjust flow rate to standards of temperature and pressure, input the temperature and barometric pressure at the time of the measurement.
  1. First, ensure that the correct Bubble-O-Meter is selected from the drop-down menu.
  2. Start timing when the bubble passes the desired calibration mark.
  3. Record the time (in seconds) when the meter passes each calibration mark, and input the time into the diagram. Record 0s at the calibration mark where you started the timer.
  4. If a time is not recorded at a calibration mark, leave the input box in the diagram empty.
  5. Click the Calculate Flow button to see your flow rate.
  6. To adjust flow rate to standards of temperature and pressure, input the temperature and barometric pressure at the time of the measurement.

Select Measurement Volume

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Recorded Time (seconds)

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Select a Bubble-O-Meter

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Note: These flow rates are at ambient temperature and pressure and are not corrected for the vapor pressure of water.

Click here to correct the observed flow rate to standard conditions of temperature (0ºC, 32ºF) and pressure (760mmHg, 29.92inHg)

Adjust Flow Rate
Temperature:
Barometric Pressure:

Stage Flow Rate (Adjusted)
0.01ml - 0.1ml -
0.01ml - 1ml -
0.1ml - 1ml -
Stage Flow Rate (Adjusted)
0ml - 1ml -
0ml - 10ml -
1ml - 10ml -
Stage Flow Rate (Adjusted)
0ml - 1ml -
0ml - 10ml -
0ml - 100ml -
1ml - 10ml -
1ml - 100ml -
10ml - 100ml -
Stage Flow Rate (Adjusted)
0ml - 1ml -
0ml - 10ml -
0ml - 500ml -
1ml - 10ml -
1ml - 500ml -
10ml - 500ml -
Stage Flow Rate (Adjusted)
0ml - 10ml -
0ml - 100ml -
0ml - 1000ml -
10ml - 100ml -
10ml - 1000ml -
100ml - 1000ml -
Stage Flow Rate (Adjusted)
0ml - 500ml -
0ml - 1000ml -
0ml - 1500ml -
0ml - 2000ml -
500ml - 1000ml -
500ml - 1500ml -
500ml - 2000ml -
1000ml - 1500ml -
1000ml - 2000ml -
1500ml - 2000ml -
Stage Flow Rate (Adjusted)
0ml - 1000ml -
0ml - 2000ml -
0ml - 3000ml -
0ml - 4000ml -
1000ml - 2000ml -
1000ml - 3000ml -
1000ml - 4000ml -
2000ml - 3000ml -
2000ml - 4000ml -
3000ml - 4000ml -

Adjusted to standard conditions of temperature (0°C, 32°F) and pressure (760mmHg, 29.92inHg).

Average Flow Rate (Adjusted)
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