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Pounds per Minute Calculator

Table of contents

What is mass flow rate?How to use our pounds per minute calculatorConvert between units: lb/min to kg/s and lb/min to cfmFAQs

Our pounds per minute calculator will help you to find the mass flow rate of an object based on its weight, or its volume and density. Keep reading to understand how to calculate pounds per minute and convert between units (lb/min to kg/s, cfm to lb/min, or lb/min to L/min).

💡 Be sure to check all the features we prepared in our tool, especially the cfm to lb/min air calculator and lb/min to gpm calculator for gasoline that are in pounds per minute conversion section.

What is mass flow rate?

You have probably heard about flow rate a couple of times, especially if you like physics and fluid mechanics. Usually, flow rate is associated with a liquid volumetric flow rate, defined as the volume of a given fluid passing through a given cross-sectional area per unit of time. We sometimes call it flow discharge. You can find more information about it in our pipe flow calculator or coefficient of discharge calculator.

On the other hand, we can measure the mass flow rate of any moving substance, whether by gravity or by any other load applied to the object. The mass flow rate units are typically pounds per minute (lb/min) or kilograms per second (kg/s), but there are other mass flow rate units as well. If you are interested in this topic, you should check our flow rate calculator.

How to use our pounds per minute calculator

It's easy using our calculator! Just input the following parameters in the corresponding fields:

  • The weight of your substance flowed in a specific time; and
  • The time of displacement.

If you don't know the weight, but you know the density and volume of the investigated substance, you can input these parameters, and our pounds per minute calculator will still give you the result. With that mode, you can, e.g., convert gpm to lb/min, cfm to lb/min, lb/min to l/min, lb/min to kg/min, or lb/min to m3/s for air, water, or gasoline.

Convert between units: lb/min to kg/s and lb/min to cfm

Instead of pounds per minute, are you looking for kilograms per second? Don't worry! You can choose different units from the list in the calculator. We also have a section to convert lb/min to kg/s. Is this not enough? Ok! So, if you know the volume of your substance, you can have your results in cubic feet per minute or other volumetric units, too! Our cfm to lb/min calculator will assist you with your tasks.

💡 To see more conversions, try visiting our density conversion or our volume conversion!

FAQs

How do I calculate pounds per minute?

To calculate the pounds per minute PPM, you need to:

  1. Find the weight of the substance you want to measure;
  2. Measure the travel time — time of displacement; and
  3. Divide the weight w by the travel time t, using the formula PPM = W/t.

That's it! You found the mass flow rate in pounds per minute. Alternatively, if you don't know the weight of the substance passing per unit time, use its density and volume.

How do I convert pounds per minute to kilograms per second?

To convert pounds per minute to kilograms per second, you need to:

  1. Find your mass flow rate in pounds per minute;
  2. Divide it by 2.20462 to convert lb to kg; and
  3. Divide the result obtained in step 2 by 60.
  4. Alternatively, you can multiply directly your mass flow rate by approximately 0.00756 to obtain the result in kilograms per second.

How do I convert cfm to lb/min?

To convert cfm to lb/min, you need to:

  1. Find the density of your substance in pounds per cubic feet;
  2. Multiply this value by substance density; and
  3. That's it! You have your result in lb/min.

How do I convert lb/min to cfm?

To convert lb/min to cfm, you need to:

  1. Find the density of your substance in pounds per cubic feet (lb/ft³);
  2. Divide the value in lb/min by the density; and
  3. That's it! You have your result in cfm.

How do I convert pounds per minute to gallons per minute?

To convert pounds per minute to gallons per minute, you need to:

  1. Find the density of your substance in pounds per gallons (lb/gal);
  2. Divide the value in lb/min by the density;
  3. You converted lb/min to gallons per minute.

What is the mass of a substance flowing at 5 PPM in 0.3 minutes?

1.5 pounds. To find pounds per minute PPM, you need to apply the equation:

PPM = mass/time

where mass is the mass of the substance that flowed through the cross-sectional area during time t. You can always verify the result using an online calculator such as Omni Calculator.

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Pounds per minute from mass and time

Input the mass that flowed in a specific time to calculate the pounds per minute.

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