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Convert Pounds per hour to Pounds per minute

Instantly convert Pounds per hour (lb/hr) to Pounds per minute (lb/min) with our free online calculator.

Reviewed by Christopher FloiedUpdated

Formula: lb/hr to lb/minmultiply by 0.0166667

Reference Table

Pounds per hour (lb/hr)Pounds per minute (lb/min)
10.0166667
50.0833334
100.166667
250.416667
500.833334
1001.66667

How to Convert Pounds per hour to Pounds per minute

Formula

To convert Pounds per hour (lb/hr) to Pounds per minute (lb/min): multiply by 0.0166667

Step-by-Step

  1. Start with your value in Pounds per hour (lb/hr).
  2. Multiply by 0.0166667 to perform the conversion.
  3. The result is your value expressed in Pounds per minute (lb/min).

Conversion Factor

1 lb/hr = 0.0166667 lb/min

Reverse Factor

1 lb/min = 59.9999 lb/hr

Worked Example

Convert 25 Pounds per hour to Pounds per minute: 25 lb/hr = 0.416667 lb/min

About Pound per hour (lb/hr)

An imperial mass-flow unit (≈ 0.453592 kg/hr = 1.25998 × 10⁻⁴ kg/s). lb/hr is the universal working unit in US HVAC, steam engineering, petroleum refining, and chemical process plants. US boiler ratings are traditionally given in lb/hr of saturated steam output: a 'boiler horsepower' (BHP) is defined as 34.5 lb/hr of saturated steam at 212 °F per ASME PTC 4.1, so a '500 BHP boiler' produces 17,250 lb/hr. ASHRAE Handbook chapters on humidification, central plants, district heating, and refrigeration all use lb/hr. Refinery feed rates appear in lb/hr in older facility documentation (newer plants increasingly use kg/hr internationally and BPD for crude). Fuel consumption on large industrial engines, marine prime movers (with bunker fuel oil), and standby diesels is routinely quoted in lb/hr.

About Pound per minute (lb/min)

An imperial mass-flow unit equal to exactly 1/60 of lb/s ≈ 7.5599 × 10⁻³ kg/s. lb/min is used for medium-timescale US engineering applications where the per-second timebase would give awkwardly small decimals and the per-hour timebase too-large numbers. Common uses: HVAC humidification (commercial steam-injection humidifiers rated 5-100 lb/min per ASHRAE Handbook), compressed-air-system purge and surge calculations, pneumatic-conveying mass-handling rates per CEMA standards (food-processing line dispensing of flour, sugar, salt, dried fruit; pharmaceutical excipient transfer per ISPE Baseline Guide for solid-dosage manufacturing), powder-coating gun flow rates (typical 1-5 lb/min), legacy reciprocating internal-combustion-engine air-flow specifications (lb/min was the standard automotive MAF unit before the industry transitioned to g/s in the early 2000s on OBD-II Mode 01 PID 0x10 per SAE J1979), and packaging-line throughput specifications for bulk consumer products. Convert lb/min to kg/s by multiplying by 7.5599 × 10⁻³; to g/s by multiplying by 7.5599; to lb/hr by multiplying by 60; to lb/s by dividing by 60.

Quick Facts

  • 1 Pound per hour equals 0.0166667 Pounds per minute
  • 1 Pound per minute equals 59.9999 Pounds per hour
  • Pound per hour is a unit of mass flow rate
  • Pound per minute is a unit of mass flow rate
  • This conversion is commonly used in chemical processing, fuel systems, and environmental monitoring
  • The Pound per hour belongs to the imperial system

Common Pound per hour to Pound per minute Conversions

Pounds per hour (lb/hr)Pounds per minute (lb/min)
0.010.000166667
0.10.00166667
0.250.00416667
0.50.00833334
10.0166667
20.0333334
30.0500001
50.0833334
100.166667
150.25
200.333334
250.416667
500.833334
751.25
1001.66667
2504.16667
5008.33334
100016.6667
500083.3334
10000166.667

Understanding Pounds per hour

The Pound per hour (symbol: lb/hr) is a unit of mass flow rate. An imperial mass-flow unit (≈ 0.453592 kg/hr = 1.25998 × 10⁻⁴ kg/s). lb/hr is the universal working unit in US HVAC, steam engineering, petroleum refining, and chemical process plants. US boiler ratings are traditionally given in lb/hr of saturated steam output: a 'boiler horsepower' (BHP) is defined as 34.5 lb/hr of saturated steam at 212 °F per ASME PTC 4.1, so a '500 BHP boiler' produces 17,250 lb/hr. ASHRAE Handbook chapters on humidification, central plants, district heating, and refrigeration all use lb/hr. Refinery feed rates appear in lb/hr in older facility documentation (newer plants increasingly use kg/hr internationally and BPD for crude). Fuel consumption on large industrial engines, marine prime movers (with bunker fuel oil), and standby diesels is routinely quoted in lb/hr.

It belongs to the imperial measurement system.

Pounds per hour are commonly used in chemical processing, fuel systems, and environmental monitoring.

Understanding Pounds per minute

The Pound per minute (symbol: lb/min) is a unit of mass flow rate. An imperial mass-flow unit equal to exactly 1/60 of lb/s ≈ 7.5599 × 10⁻³ kg/s. lb/min is used for medium-timescale US engineering applications where the per-second timebase would give awkwardly small decimals and the per-hour timebase too-large numbers. Common uses: HVAC humidification (commercial steam-injection humidifiers rated 5-100 lb/min per ASHRAE Handbook), compressed-air-system purge and surge calculations, pneumatic-conveying mass-handling rates per CEMA standards (food-processing line dispensing of flour, sugar, salt, dried fruit; pharmaceutical excipient transfer per ISPE Baseline Guide for solid-dosage manufacturing), powder-coating gun flow rates (typical 1-5 lb/min), legacy reciprocating internal-combustion-engine air-flow specifications (lb/min was the standard automotive MAF unit before the industry transitioned to g/s in the early 2000s on OBD-II Mode 01 PID 0x10 per SAE J1979), and packaging-line throughput specifications for bulk consumer products. Convert lb/min to kg/s by multiplying by 7.5599 × 10⁻³; to g/s by multiplying by 7.5599; to lb/hr by multiplying by 60; to lb/s by dividing by 60.

It belongs to the imperial measurement system.

Pounds per minute are commonly used in chemical processing, fuel systems, and environmental monitoring.

Why Convert Pounds per hour to Pounds per minute?

Converting between Pounds per hour and Pounds per minute is a frequent requirement for engineers, scientists, and students working with mass flow rate values. Different industries and regions favour different unit systems, so having a dependable conversion tool saves time and prevents errors in technical calculations. Whether you are verifying a specification sheet, cross-checking simulation results, or preparing a report for an international audience, accurate mass flow rate conversion is essential.

Frequently Asked Questions

How do I convert Pounds per hour to Pounds per minute?

An imperial mass-flow unit (≈ 0. To convert Pounds per hour to Pounds per minute, multiply by 0.0166667. For example, 25 lb/hr equals 0.416667 lb/min.

How many Pounds per minute are in 1 Pound per hour?

There are 0.0166667 Pounds per minute in 1 Pound per hour.

How many Pounds per hour are in 1 Pound per minute?

There are 59.9999 Pounds per hour in 1 Pound per minute.

What is the formula for Pound per hour to Pound per minute conversion?

The formula is: multiply by 0.0166667. This means 1 lb/hr = 0.0166667 lb/min.

Is a Pound per hour bigger than a Pound per minute?

Yes. One Pound per hour is larger than one Pound per minute because 1 lb/hr equals 0.0166667 lb/min, which is less than 1.

When do you need to convert between Pounds per hour and Pounds per minute?

An imperial mass-flow unit equal to exactly 1/60 of lb/s ≈ 7. Pound per hour and Pound per minute are both mass flow units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.

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