mL/h to GPM Converter
Enter the flow rate in ml/h below to convert it to gpm.
Convert mL/h to GPM (US)
Enter a value in ml/h (mL/h) to convert to gpm (us) (GPM).
Milliliters per Hour to US Gallons per Minute Conversion Table
Table showing various milliliters per hour measurements converted to gpm. Click any preset value or arrow to load it into the converter.
| mL/h (mL/h) | GPM (US) (GPM) |
|---|---|
| 1 mL/h | 0.000004403 GPM |
| 10 mL/h | 0.000044029 GPM |
| 100 mL/h | 0.000440287 GPM |
| 1,000 mL/h | 0.0044029 GPM |
| 10,000 mL/h | 0.0440287 GPM |
| 100,000 mL/h | 0.4402868 GPM |
| 1,000,000 mL/h | 4.4028675 GPM |
| 5,000,000 mL/h | 22.0143377 GPM |
| 10,000,000 mL/h | 44.0286754 GPM |
| 25,400,000 mL/h | 111.8328355 GPM |
How to Convert mL/h to GPM
To convert ml/h to gpm, multiply the flow rate by the following conversion ratio: 0.000004403 gpm/milliliters per hour.
Since one milliliters per hour is equal to 0.000004403 gpm, you can use this simple formula to convert:
The flow rate in gpm is equal to the flow rate in ml/h multiplied by 0.000004403.
For example, here's how to convert 5 ml/h to gpm using the formula above.
How Many GPM Are in a Milliliters per Hour?
There are 0.000004403 gpm in a milliliters per hour, which is why we use this value in the formula above.
Our milliliters per hour to us gallons per minute calculator automatically converts your flow rate measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
mL/h and gpm are both units used to measure flow rate. Keep reading to learn more about each unit.
What Is a Milliliters per Hour?
A milliliters per hour is a unit of flow rate equal to 1/60,000 of a liters per minute (0.000016667 L/min). Medical IV infusion pump rate unit. [1]
The milliliters per hour is classified as a metric and SI-compatible unit of flow rate. mL/h can be abbreviated as mL/h; for example, 1 milliliters per hour can be written as 1 mL/h.
In the metric system, "milli" is the standard SI prefix for thousandths, or 10⁻³. This makes the milliliters per hour (mL/h) a convenient decimal multiple of the liters per minute (L/min).
In practice, ml/h (mL/h) are widely used across fine-tolerance laboratory, analytical, and micro-scale flow rate measurements within SI metric workflows, engineering documentation, and technical data sheets.
What Is a US Gallons per Minute?
A us gallons per minute is a unit of flow rate equal to 3.7854118 liters per minute (L/min), the base unit for flow rate. Standard US plumbing & pump flow rate (3.78541 L/min). [2]
The us gallons per minute is classified as a US customary unit of flow rate. GPM can be abbreviated as GPM; for example, 1 us gallons per minute can be written as 1 GPM.
When working with gpm (GPM) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, gpm (GPM) are widely used across standard flow rate applications within US customary workflows, engineering documentation, and technical data sheets.
When converting flow rate between ml/h (mL/h) and gpm (GPM), keep full floating-point precision (1 mL/h = 0.000004403 GPM; 1 GPM = 227,124.70704 mL/h) during intermediate calculations and round only the final us gallons per minute figure to match your instrument tolerance.
More Milliliters per Hour & US Gallons per Minute Conversions
Need to calculate in the opposite direction? Use our gpm (us) to ml/h calculator to switch your starting unit immediately. You can also explore related tools such as converting gpm (us) to ml/h, converting liters per minute to gpm (us), or converting gpm (us) to liters per minute.
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Volume Divided by Time))·Flow Rate Metrology Standard — mL/h (mL/h) to GPM (US) (GPM)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Volume & Flow Capacity)·Unit Specifications: Milliliters per Hour (mL/h) & US Gallons per Minute (GPM) (GPM)
- [3]BIPM ReferenceBIPM (Coherent Volumetric Flow Units (m³/s))·Conversion Factors & Mathematical Basis (mL/h to GPM)