What does Btu (th)/second measure?

Btu (th)/second measures the rate of heat transfer as one thermochemical British thermal unit delivered every second, used mainly to quantify thermal energy flow in heating and cooling systems.

What is a millijoule/second?

A millijoule per second is a unit of power equal to 0.001 joules per second or 1 milliwatt, commonly used to specify low power rates in electronic devices and microscale experiments.

Why convert from Btu (th)/second to millijoule/second?

Converting helps translate large scale thermal power values into smaller units suitable for low-power applications and precise measurements in electronics and laboratory research.

How to Convert from Btu (th)/second to Millijoule/second

Learn how to convert power units from Btu (th)/second to millijoule/second with this easy-to-use online converter. Understand the applications, benefits, and considerations for accurate conversions.

Btu (th)/second [Btu (th)/s]

Millijoule/second [mJ/s]

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Btu (th)/second [Btu (th)/s] to Millijoule/second [mJ/s] Conversion Table

Btu (th)/second [Btu (th)/s]	Millijoule/second [mJ/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.

Btu (th)/second [Btu (th)/s] to Millijoule/second [mJ/s] Conversion Table
Btu (th)/second [Btu (th)/s]	Millijoule/second [mJ/s]

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What Is This Tool?

This tool allows you to convert power measurements from Btu (th)/second, a unit representing heat transfer rate in thermochemical British thermal units per second, to millijoule/second, which is a low-power unit equivalent to 0.001 watts. It helps translate thermal energy flow values into smaller scale units for various practical uses.

How to Use This Tool?

Enter the power value in Btu (th)/second you wish to convert
Select Btu (th)/second as the source unit and millijoule/second as the target unit
Click the convert button to get the equivalent power in millijoule/second
Review the converted result for use in your calculations or analyses

Key Features

Converts power from Btu (th)/second to millijoule/second instantly
Supports thermal power ratings relevant for HVAC and industrial systems
Facilitates power unit translation for low-power electronics and microscale applications
Browser-based and easy to use without installation
Provides clear, precise unit definitions and examples

Examples

2 Btu (th)/second equals 2 × 1054349.9999744 millijoule/second, which is 2108699.9999488 mJ/s
0.5 Btu (th)/second equals 0.5 × 1054349.9999744 millijoule/second, resulting in 527174.9999872 mJ/s

Common Use Cases

Rating HVAC equipment such as furnaces and air conditioners by heat delivery or removal capacity
Specifying outputs for boilers and heat exchangers in building and industrial systems
Comparing heat transfer rates for energy system tests and simulations
Measuring power consumption of low-power electronics including sensors and wearables
Assessing optical power in low-power LEDs and laboratory lasers
Quantifying heat or energy release in microscale thermal or biochemical research

Tips & Best Practices

Double-check unit selections before converting to avoid errors
Use this conversion tool for steady or instantaneous power evaluations
Interpret large conversions carefully due to magnitude differences between units
Apply the converted values according to the context of your specific thermal or electronic system
Cross-verify results when converting extremely high or low power values

Limitations

Large magnitude differences between units can cause numerical misinterpretations
The conversion assumes steady or instantaneous power without factoring in dynamic changes
Not suitable for calculations requiring transient or time-dependent power variations

Frequently Asked Questions

What does Btu (th)/second measure?: Btu (th)/second measures the rate of heat transfer as one thermochemical British thermal unit delivered every second, used mainly to quantify thermal energy flow in heating and cooling systems.
What is a millijoule/second?: A millijoule per second is a unit of power equal to 0.001 joules per second or 1 milliwatt, commonly used to specify low power rates in electronic devices and microscale experiments.
Why convert from Btu (th)/second to millijoule/second?: Converting helps translate large scale thermal power values into smaller units suitable for low-power applications and precise measurements in electronics and laboratory research.

Key Terminology

Btu (th)/second: A power unit measuring the rate of heat transfer as thermochemical British thermal units per second, used for thermal energy flow in heating and cooling systems.
Millijoule/second (mJ/s): A power unit equal to 0.001 joules per second or 1 milliwatt, typically used to measure low-power energy transfer.
Thermal power: The rate at which heat energy is transferred or converted over time.

Quick Knowledge Check

What type of measurement is Btu (th)/second used for?

Electrical current measurement

Thermal power or heat transfer rate

Volume flow rate

What does 1 millijoule/second equal?

1 watt

0.001 watt

1000 watts

What is a common use of converting Btu (th)/second to millijoule/second?

To evaluate power consumption of low-power electronics

To measure speed of sound

To calculate volume of liquids

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