What does 1 gallon (US)/day represent in flow measurement?

It is a volumetric flow rate equal to one US liquid gallon of fluid passing a point in one day.

Why is milliliter/second used for small flow rates?

Because it measures very small volumes of liquid or gas passing per second, making it ideal for laboratory and medical applications.

Can I use this conversion for large water flows?

This conversion is mainly intended for low flow rates; for larger flows, other units might be more suitable.

How do I convert gallon (US)/day to milliliter/second?

Multiply the value in gallon (US)/day by 0.0438126364 to get the equivalent value in milliliter/second.

How to Convert from Gallon (US)/day to Milliliter/second

Learn how to accurately convert flow rates from gallon (US)/day to milliliter/second for precise measurement and control of small volumetric flows in various applications.

Gallon (US)/day [gal (US)/d]

Milliliter/second [mL/s]

Please check your input. It must be a valid numeric value.

Gallon (US)/day [gal (US)/d] to Milliliter/second [mL/s] Conversion Table

Gallon (US)/day [gal (US)/d]	Milliliter/second [mL/s]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Start Value

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.

End Value

Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.

Interval

Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.

Gallon (US)/day [gal (US)/d] to Milliliter/second [mL/s] Conversion Table
Gallon (US)/day [gal (US)/d]	Milliliter/second [mL/s]

Explore More Flow Units Converter

What Is This Tool?

This tool converts volumetric flow rates from gallon (US)/day to milliliter/second, enabling users to measure and control small continuous flows in metric units suitable for environmental, medical, and laboratory applications.

How to Use This Tool?

Enter the flow value in gallon (US)/day.
Select gallon (US)/day as the input unit and milliliter/second as the output unit.
Click the convert button to see the equivalent flow rate in milliliter/second.
Use the conversion factor 1 gal (US)/d = 0.0438126364 mL/s if manual calculation is needed.
Refer to examples to guide your conversions.

Key Features

Converts flow rates between gallon (US)/day and milliliter/second.
Supports precise measurement of low volumetric flows and dosing rates.
Useful for water consumption, chemical dosing, and medical device calibration.
Operates directly in your web browser without installation.
Includes conversion examples for quick reference.

Examples

10 gal (US)/d converts to 0.438126364 mL/s by multiplying 10 by 0.0438126364.
50 gal (US)/d equals 2.19063182 mL/s using the same conversion factor.

Common Use Cases

Reporting daily household or per-capita water consumption in the US.
Monitoring small groundwater yields and well flow rates.
Setting precise flow rates on medical syringe pumps and microfluidic devices.
Measuring airflow in respiratory testing and pulmonary research.
Calibrating laboratory dispensers and small-scale chemical dosing systems.

Tips & Best Practices

Double-check units before converting to avoid errors in flow rate interpretation.
Use the precise conversion factor for accurate calculations.
Apply this conversion mainly for low flow rates to maintain clarity and precision.
Be cautious of rounding errors when dealing with very small values.
Understand the context of your application to select the most suitable units.

Limitations

Time scale differences (day vs. second) can lead to rounding issues in very small flow values.
Less practical for converting large flow rates due to readability concerns.
Best applied for low volumetric flow measurements rather than high-volume flows.

Frequently Asked Questions

What does 1 gallon (US)/day represent in flow measurement?: It is a volumetric flow rate equal to one US liquid gallon of fluid passing a point in one day.
Why is milliliter/second used for small flow rates?: Because it measures very small volumes of liquid or gas passing per second, making it ideal for laboratory and medical applications.
Can I use this conversion for large water flows?: This conversion is mainly intended for low flow rates; for larger flows, other units might be more suitable.
How do I convert gallon (US)/day to milliliter/second?: Multiply the value in gallon (US)/day by 0.0438126364 to get the equivalent value in milliliter/second.

Key Terminology

Gallon (US)/day: A unit of volumetric flow rate representing one US liquid gallon flowing past a point within one day.
Milliliter/second: A metric unit indicating one milliliter of fluid passing a point every second, used for small liquid or gas flow rates.
Volumetric Flow Rate: The measure of volume of fluid passing through a point per unit time.

Quick Knowledge Check

What is the unit prefix for milliliter/second?

Micro

Milli

Centi

Which best describes 1 gallon (US)/day?

Volume per second

Volume per day

Mass per second

For what type of flow rates is this conversion most useful?

High flow rates

Low flow rates

Mass flow rates

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