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Pound-moles per Hour to Millimoles per Second Converter

Enter the molar flow rate in pound-moles per hour below to convert it to millimoles per second.

Convert Pound-moles per Hour to Millimoles per Second

Enter a value in pound-moles per hour (lbmol/h) to convert to millimoles per second (mmol/s).

Result
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629.989402778millimoles per second
5 lbmol/h = 629.989402778 mmol/s
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Reference:NIST OWM (SI Units — Length)
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Pound-mole per Hour to Millimole per Second Conversion Table

Table showing various pound-mole per hour measurements converted to millimoles per second. Click any preset value or arrow to load it into the converter.

Pound-moles per Hour (lbmol/h)Millimoles per Second (mmol/s)
1 lbmol/h125.9978806 mmol/s
2 lbmol/h251.9957611 mmol/s
2.5 lbmol/h314.9947014 mmol/s
5 lbmol/h629.9894028 mmol/s
10 lbmol/h1,259.9788056 mmol/s
15 lbmol/h1,889.9682083 mmol/s
20 lbmol/h2,519.9576111 mmol/s
25 lbmol/h3,149.9470139 mmol/s
30 lbmol/h3,779.9364167 mmol/s
50 lbmol/h6,299.8940278 mmol/s

How to Convert Pound-moles per Hour to Millimoles per Second

To convert pound-moles per hour to millimoles per second, multiply the molar flow rate by the following conversion ratio: 125.9978806 millimoles per second/pound-mole per hour.

Since one pound-mole per hour is equal to 125.9978806 millimoles per second, you can use this simple formula to convert:

millimoles per second = pound-moles per hour × 125.9978806

The molar flow rate in millimoles per second is equal to the molar flow rate in pound-moles per hour multiplied by 125.9978806.

For example, here's how to convert 5 pound-moles per hour to millimoles per second using the formula above.

millimoles per second = (5 lbmol/h × 125.9978806) = 629.9894028 mmol/s

How Many Millimoles per Second Are in a Pound-mole per Hour?

There are 125.9978806 millimoles per second in a pound-mole per hour, which is why we use this value in the formula above.

1 lbmol/h = 125.9978806 mmol/s|1 mmol/s = 0.0079366 lbmol/h

Our pound-mole per hour to millimole per second calculator automatically converts your molar flow rate measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Pound-moles per Hour and millimoles per second are both units used to measure molar flow rate. Keep reading to learn more about each unit.

What Is a Pound-mole per Hour?

A pound-mole per hour is a unit of molar flow rate equal to 0.1259979 moles per second (mol/s), the base unit for molar flow rate. US chemical engineering molar flow unit (≈ 0.126 mol/s). [1]

The pound-mole per hour is classified as a US customary unit of molar flow rate. Pound-moles per Hour can be abbreviated as lbmol/h; for example, 1 pound-mole per hour can be written as 1 lbmol/h.

When working with pound-moles per hour (lbmol/h) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, pound-moles per hour (lbmol/h) are widely used across standard molar flow rate applications within US customary workflows, engineering documentation, and technical data sheets.

What Is a Millimole per Second?

A millimole per second is a unit of molar flow rate equal to 1/1,000 of a mole per second (0.001 mol/s). Equal to 0.001 mol/s. [2]

The millimole per second is classified as a metric and SI-compatible unit of molar flow rate. Millimoles per Second can be abbreviated as mmol/s; for example, 1 millimole per second can be written as 1 mmol/s.

In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the millimole per second (mmol/s) a convenient decimal multiple of the mole per second (mol/s).

In practice, millimoles per second (mmol/s) are widely used across fine-tolerance laboratory, analytical, and micro-scale molar flow rate measurements within SI metric workflows, engineering documentation, and technical data sheets.

When converting molar flow rate between pound-moles per hour (lbmol/h) and millimoles per second (mmol/s), keep full floating-point precision (1 lbmol/h = 125.9978806 mmol/s; 1 mmol/s = 0.0079366 lbmol/h) during intermediate calculations and round only the final millimole per second figure to match your instrument tolerance.

More Pound-mole per Hour & Millimole per Second Conversions

Need to calculate in the opposite direction? Use our millimoles per second to pound-moles per hour calculator to switch your starting unit immediately. You can also explore related tools such as converting millimoles per second to pound-moles per hour, converting moles per second to kilomoles per second, or converting kilomoles per second to moles per second.

Frequently Asked Questions

There are 125.99788 millimoles per second (mmol/s) in 1 pound-mole per hour (lbmol/h). Conversely, 1 millimole per second (mmol/s) is equal to 0.00793664 pound-moles per hour (lbmol/h).

References

NIST · BIPM · ISO
  1. [1]
    NIST OWM (SI Units — Length)·Flow - Molar Metrology Standard — Pound-moles per Hour (lbmol/h) to Millimoles per Second (mmol/s)
    NIST OWM Standard
  2. [2]
    BIPM (SI Base Unit: Metre (m))·Unit Specifications: Pound-mole per Hour (lbmol/h) & Millimole per Second (mmol/s)
    BIPM Specification
  3. [3]
    NIST HB 133 (NIST Handbook 133 (2019 Ed.))·Conversion Factors & Mathematical Basis (lbmol/h to mmol/s)
    NIST HB 133 Reference
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