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    Mass Flow Rate Conversion

    18 Pound/Hour to Pound/Second

    Quick answer

    18 Pound/Hour (lb/h) equals

    0.005 lb/s

    To convert 18 Pound/Hours to Pound/Seconds, multiply by 0.0002777778. Therefore, 18 Pound/Hour (lb/h) equals 0.005 Pound/Second (lb/s).

    Formula: lb/s = lb/h × 0.0002777778. Calculation: 18 × 0.0002777778 = 0.005 lb/s.

    Convert Pound/Hour (lb/h) to Pound/Second (lb/s) online with our free unit converter. In mass flow rate, 1 lb/h = 0.000278 lb/s. Explore step-by-step conversion steps, mathematical formulas, and quick conversion reference tables below.

    Worked example: converting Pound/Hour to Pound/Second

    1. Step 1 — start with the formula. lb/s = lb/h × 0.0002777778
    2. Step 2 — substitute your figure. 18 lb/h × 0.0002777778
    3. Step 3 — read the result. 18 lb/h = 0.005 lb/s
    4. Step 4 — check it in reverse. lb/h = lb/s × 3,599.9999987301 returns 18 lb/h, which matches the figure you started with.

    Mass Flow Rate Converter

    9 units available

    Decimals:
    0.005

    18 lb/h = 0.005 lb/s

    Formula:

    lb/s = lb/h × 0.0002777778

    With your value: 18 lb/h = 0.005 lb/s

    Other Pound/Hour to Pound/Second conversions

    13 lb/h to lb/s14 lb/h to lb/s15 lb/h to lb/s16 lb/h to lb/s20 lb/h to lb/s21 lb/h to lb/s24 lb/h to lb/sFull Pound/Hour to Pound/Second converter

    Pound/Hour to Pound/Second Conversion Table

    Pound/Hour (lb/h)Pound/Second (lb/s)
    0.50.000139
    10.000278
    20.000556
    50.001389
    100.002778
    150.004167
    200.005556
    250.006944
    500.013889
    1000.027778
    2500.069444
    5000.138889
    10000.277778

    Pound/Second to Pound/Hour Conversion Table

    Pound/Second (lb/s)Pound/Hour (lb/h)
    0.51,799.999999
    13,599.999999
    27,199.999997
    517,999.999994
    1035,999.999987
    1553,999.999981
    2071,999.999975
    2589,999.999968
    50179,999.999937
    100359,999.999873
    250899,999.999683
    5001,799,999.999365
    10003,599,999.99873

    Where these values come from

    Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

    Pound/Hour (lb/h)

    Mass Flow Rate

    Exact conversion

    Derived quantity: a defined mass divided by a defined time interval (kg/s), exact via the kilogram and the international pound.

    Source: ISO 80000, Quantities and units (all parts)

    International Organization for Standardization · Reviewed 2026-07-01

    Pound/Second (lb/s)

    Mass Flow Rate

    Exact conversion

    Derived quantity: a defined mass divided by a defined time interval (kg/s), exact via the kilogram and the international pound.

    Source: ISO 80000, Quantities and units (all parts)

    International Organization for Standardization · Reviewed 2026-07-01

    How to Convert Pound/Hour to Pound/Second

    To convert from Pound/Hour (lb/h) to Pound/Second (lb/s), multiply the value by 0.0002777778.

    Formula: lb/s = lb/h × 0.0002777778

    Reverse: lb/h = lb/s × 3,599.9999987301

    Step-by-Step Example

    1. Start with your value in Pound/Hour. For example: 5 lb/h
    2. Multiply by the conversion factor: 5 x 0.0002777778
    3. The result is: 0.001389 lb/s

    Pound/Hour and Pound/Second Relationship

    This calculation facilitates standardized conversion between recognized units of mass flow rate. Since 1 Pound/Hour represents a fraction of a Pound/Second (1 Pound/Second ≈ 3,600 Pound/Hours), the Pound/Second is the larger measurement interval. Understanding the relationship between Pound/Hour and Pound/Second is essential for accurate calculations in physics, engineering, commerce, and daily applications.

    About Pound/Hour

    The Pound/Hour (symbol: lb/h) is a recognized unit in the Standard measurement framework, utilized within mass flow rate applications for precision and standardized data representation.

    Common uses of Pound/Hour: mass flow rate calculations, engineering and science, education.

    About Pound/Second

    The Pound/Second (symbol: lb/s) is a recognized unit in the Standard measurement framework, utilized within mass flow rate applications for precision and standardized data representation.

    Common uses of Pound/Second: mass flow rate calculations, engineering and science, education.

    Frequently Asked Questions

    What is 18 Pound/Hour in Pound/Second?
    18 Pound/Hour equals 0.005 Pound/Second.
    How many Pound/Seconds are in 1 Pound/Hour?
    There are exactly 0.0002777778 Pound/Seconds in 1 Pound/Hour. This means the conversion factor from Pound/Hour to Pound/Second is 0.0002777778.
    What is the formula to convert Pound/Hour to Pound/Second?
    The formula to convert Pound/Hour to Pound/Second is: lb/s = lb/h × 0.0002777778. For example, to convert 10 Pound/Hours to Pound/Seconds, you would multiply 10 by 0.0002777778.
    What is a Pound/Hour?
    The Pound/Hour (symbol: lb/h) is a recognized unit in the Standard measurement framework, utilized within mass flow rate applications for precision and standardized data representation.
    What is a Pound/Second?
    The Pound/Second (symbol: lb/s) is a recognized unit in the Standard measurement framework, utilized within mass flow rate applications for precision and standardized data representation.
    What are the common uses of Pound/Hour?
    The Pound/Hour is commonly used in mass flow rate calculations, engineering and science, education.

    Related Mass Flow Rate Conversions

    Kilogram/Second → Pound/SecondKilogram/Hour → Pound/SecondGram/Second → Pound/SecondGram/Minute → Pound/SecondMetric Ton/Hour → Pound/SecondMetric Ton/Day → Pound/SecondPound/Hour → Kilogram/SecondPound/Hour → Kilogram/HourPound/Hour → Gram/Second

    Cite this page

    UnitConvertLab. (2026). 18 Pound/Hour to Pound/Second. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/18-lb_per_hour-to-lb_per_second