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1 mW = 0.003412 BTU/h
1 Milliwatt equals 0.003412 BTU per Hour

Milliwatts to BTU per Hour Conversion Table

Standard benchmark values from 1 to 1,000 mW in BTU/h.

Milliwatts (mW) BTU per Hour (BTU/h)
1 mW 0.003412 BTU/h
2 mW 0.006824 BTU/h
5 mW 0.01706 BTU/h
10 mW 0.03412 BTU/h
25 mW 0.0853 BTU/h
50 mW 0.1706 BTU/h
100 mW 0.3412 BTU/h
250 mW 0.853 BTU/h
500 mW 1.7061 BTU/h
1000 mW 3.4121 BTU/h

Convert Milliwatts to BTU per Hour

Convert milliwatts to btu per hour (mW to BTU/h) with our instant calculator. 1 mW = 0.003412 BTU/h. Includes exact formula and reference tables.

How to Convert Milliwatts to BTU per Hour (mW to BTU/h)

1 Milliwatt (mW) is equal to 0.003412 BTU per Hour (BTU/h). Multiply the milliwatt value by 0.003412141635

Quick Answer 1 mW = 0.003412 BTU/h
Formula BTU/h = mW × 0.003412141635
Inverse Factor 1 BTU/h = 293.07107 mW

Unit Definitions & Metrology Context

The SI unit of power is the watt (W), equal to 1 joule per second. 1 mechanical horsepower equals ~745.7 watts.

About Milliwatts (mW): Milliwatt (mW) is a unit in the Power measurement category. It is widely used in rf transmitters, wi-fi & laser output. Relative to the power base unit, 1 mW equals 0.001 Watts (W).

About BTU per Hour (BTU/h): BTU per Hour (BTU/h) is a unit in the Power measurement category. It is widely used in btu per hour (heating / cooling). Relative to the power base unit, 1 BTU/h equals 0.293071 Watts (W).

Need to convert in the opposite direction? Visit our Convert BTU per Hour to Milliwatts (BTU/h to mW) calculator (1 BTU/h = 293.07107 mW).

Step-by-Step Worked Examples (mW to BTU/h)

  • Convert 5 Milliwatts to BTU per Hour: Applying the formula (BTU/h = mW × 0.003412141635): starting with 5 mW, multiply the milliwatt value by 0.003412141635 to get 0.0171 BTU/h.
  • Convert 10 Milliwatts to BTU per Hour: Applying the formula (BTU/h = mW × 0.003412141635): starting with 10 mW, multiply the milliwatt value by 0.003412141635 to get 0.0341 BTU/h.
  • Convert 50 Milliwatts to BTU per Hour: Applying the formula (BTU/h = mW × 0.003412141635): starting with 50 mW, multiply the milliwatt value by 0.003412141635 to get 0.1706 BTU/h.

Popular Power Conversions

Horsepower (Mechanical/US) ⇄ Kilowatt
1 mechanical horsepower equals approximately 0.7457 kilowatts.
Kilowatt ⇄ Horsepower (Mechanical/US)
Multiply kilowatts by ~1.34102 to calculate mechanical horsepower.
Kilowatt ⇄ Watt
1 kilowatt equals exactly 1,000 watts.
Megawatt ⇄ Kilowatt
1 megawatt equals exactly 1,000 kilowatts or 1,000,000 watts.

Frequently Asked Questions

Verified answers and formulas for converting milliwatts to btu per hour.

How many btu per hour are in 1 milliwatt?

There are 0.003412 btu per hour (BTU/h) in 1 milliwatt (mW). Conversely, 1 btu per hour equals 293.07107 milliwatts.

How do you convert milliwatts to btu per hour?

To convert milliwatts (mW) to btu per hour (BTU/h), use the formula: BTU/h = mW × 0.003412141635. Multiply the milliwatt value by 0.003412141635. For example, 10 mW equals 0.0341 BTU/h.

How do I convert back from btu per hour to milliwatts?

To convert in the reverse direction from btu per hour (BTU/h) to milliwatts (mW), use the inverse formula: mW = BTU/h × 293.07107. Multiply the btu per hour value by 293.07107 (1 BTU/h = 293.07107 mW).

What is the difference between milliwatt (mW) and btu per hour (BTU/h)?

Both milliwatt and btu per hour measure power. Milliwatt (mW) is a unit in the Power measurement category. It is widely used in rf transmitters, wi-fi & laser output. Relative to the power base unit, 1 mW equals 0.001 Watts (W). BTU per Hour (BTU/h) is a unit in the Power measurement category. It is widely used in btu per hour (heating / cooling). Relative to the power base unit, 1 BTU/h equals 0.293071 Watts (W).

How many watts are in 1 horsepower?

1 mechanical (imperial) horsepower equals approximately 745.7 watts. 1 metric horsepower (PS) equals ~735.5 watts.