The “pound per hour” (lb/h) is a unit of flow rate often used in engineering and manufacturing to describe the mass of a substance, such as steam or fuel, moving through a system over time. While commonly associated with industrial processes, this unit plays a crucial role in everyday appliances, like HVAC systems, to ensure optimal performance and energy efficiency by precisely managing the flow of refrigerant or air.

Historically, the pound per hour measurement gained prominence during the Industrial Revolution when steam engines were vital for transportation and industry. By calculating steam flow in pounds per hour, engineers of the time could effectively control machinery, optimize fuel use, and enhance productivity—a legacy that continues to influence modern engineering practices.

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The unit “pound per second” (lb/s) is not just a primitive measure; it’s an essential component in the world of engineering and physics. It’s often utilized to quantify mass flow rates in systems involving fluid dynamics, such as fuel consumption in jet engines. Understanding this unit is crucial, as the efficiency and safety of high-speed transportation systems depend on precise calculations related to pound per second measurements.

While the metric system predominates globally, the pound per second emphasizes its significance primarily in the United States, where the customary system is still widespread. Interestingly, this unit connects everyday materials to vast industries, such as the U.S. Space Program, which must calculate rocket propellant flow rates with extreme precision, showcasing the intersection of everyday units with high-stakes applications.

Pounds per hour

Pounds per second

0 lb/h

0 lb/s

100 lb/h

0.0277778 lb/s

200 lb/h

0.0555556 lb/s

300 lb/h

0.0833333 lb/s

400 lb/h

0.111111 lb/s

500 lb/h

0.138889 lb/s

600 lb/h

0.166667 lb/s

700 lb/h

0.194444 lb/s

800 lb/h

0.222222 lb/s

900 lb/h

0.25 lb/s

1000 lb/h

0.277778 lb/s

1100 lb/h

0.305556 lb/s

1200 lb/h

0.333333 lb/s

1300 lb/h

0.361111 lb/s

1400 lb/h

0.388889 lb/s

1500 lb/h

0.416667 lb/s

1600 lb/h

0.444444 lb/s

1700 lb/h

0.472222 lb/s

1800 lb/h

0.5 lb/s

1900 lb/h

0.527778 lb/s

2000 lb/h

0.555556 lb/s

2100 lb/h

0.583333 lb/s

2200 lb/h

0.611111 lb/s

2300 lb/h

0.638889 lb/s

2400 lb/h

0.666667 lb/s

2500 lb/h

0.694444 lb/s

2600 lb/h

0.722222 lb/s

2700 lb/h

0.75 lb/s

2800 lb/h

0.777778 lb/s

2900 lb/h

0.805556 lb/s

3000 lb/h

0.833333 lb/s

3100 lb/h

0.861111 lb/s

3200 lb/h

0.888889 lb/s

3300 lb/h

0.916667 lb/s

3400 lb/h

0.944444 lb/s

3500 lb/h

0.972222 lb/s

3600 lb/h

1 lb/s

3700 lb/h

1.02778 lb/s

3800 lb/h

1.05556 lb/s

3900 lb/h

1.08333 lb/s

4000 lb/h

1.11111 lb/s

4100 lb/h

1.13889 lb/s

4200 lb/h

1.16667 lb/s

4300 lb/h

1.19444 lb/s

4400 lb/h

1.22222 lb/s

4500 lb/h

1.25 lb/s

4600 lb/h

1.27778 lb/s

4700 lb/h

1.30556 lb/s

4800 lb/h

1.33333 lb/s

4900 lb/h

1.36111 lb/s

5000 lb/h

1.38889 lb/s

5100 lb/h

1.41667 lb/s

5200 lb/h

1.44444 lb/s

5300 lb/h

1.47222 lb/s

5400 lb/h

1.5 lb/s

5500 lb/h

1.52778 lb/s

5600 lb/h

1.55556 lb/s

5700 lb/h

1.58333 lb/s

5800 lb/h

1.61111 lb/s

5900 lb/h

1.63889 lb/s

6000 lb/h

1.66667 lb/s

6100 lb/h

1.69444 lb/s

6200 lb/h

1.72222 lb/s

6300 lb/h

1.75 lb/s

6400 lb/h

1.77778 lb/s

6500 lb/h

1.80556 lb/s

6600 lb/h

1.83333 lb/s

6700 lb/h

1.86111 lb/s

6800 lb/h

1.88889 lb/s

6900 lb/h

1.91667 lb/s

7000 lb/h

1.94444 lb/s

7100 lb/h

1.97222 lb/s

7200 lb/h

2 lb/s

7300 lb/h

2.02778 lb/s

7400 lb/h

2.05556 lb/s

7500 lb/h

2.08333 lb/s

7600 lb/h

2.11111 lb/s

7700 lb/h

2.13889 lb/s

7800 lb/h

2.16667 lb/s

7900 lb/h

2.19444 lb/s

8000 lb/h

2.22222 lb/s

8100 lb/h

2.25 lb/s

8200 lb/h

2.27778 lb/s

8300 lb/h

2.30556 lb/s

8400 lb/h

2.33333 lb/s

8500 lb/h

2.36111 lb/s

8600 lb/h

2.38889 lb/s

8700 lb/h

2.41667 lb/s

8800 lb/h

2.44444 lb/s

8900 lb/h

2.47222 lb/s

9000 lb/h

2.5 lb/s

9100 lb/h

2.52778 lb/s

9200 lb/h

2.55556 lb/s

9300 lb/h

2.58333 lb/s

9400 lb/h

2.61111 lb/s

9500 lb/h

2.63889 lb/s

9600 lb/h

2.66667 lb/s

9700 lb/h

2.69444 lb/s

9800 lb/h

2.72222 lb/s

9900 lb/h

2.75 lb/s

10000 lb/h

2.77778 lb/s

Conversion

Pounds per hour to Kilograms per second

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Pounds per hour to Kilograms per minute

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Pounds per hour to Kilograms per hour

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Pounds per hour to Tons per hour

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Pounds per hour to Pounds per second Conversion

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> Pounds per hour to Pounds per second Conversion Table

> Other Conversions

:: Mass Flow Rate Units

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> Pounds per hour to Pounds per second Conversion Table

> Other Conversions

:: Mass Flow Rate Units

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