Marks Calc

BTU/hour to milliwatts

Convert btu/hour to milliwatt — instant, free, with the formula shown.

1 BTU/h=293.071 mW

How to convert btu/hour to milliwatt

To convert btu/hour to milliwatt, multiply by 293.071:

mW = BTU/h × 293.071

For example, 10 BTU/h × 293.071 = 2930.71 mW.

BTU/h to mW conversion table

BTU/hour (BTU/h)milliwatts (mW)
1 BTU/h293.071 mW
2 BTU/h586.142 mW
5 BTU/h1465.355 mW
10 BTU/h2930.71 mW
25 BTU/h7326.775 mW
50 BTU/h14653.55 mW
100 BTU/h29307.1 mW
250 BTU/h73267.75 mW
500 BTU/h146535.5 mW
1000 BTU/h293071 mW
Reverse: Milliwatt to BTU/hour

Other btu/hour conversions

Convert to milliwatt from another unit

BTU/h to mW — frequently asked

How many milliwatts are in 1 btu/hour?

1 btu/hour = 293.071 milliwatts (BTU/h × 293.071 = mW).

What is the formula to convert btu/hour to milliwatt?

Multiply your btu/hour value by 293.071 to get milliwatt.

How do I convert 10 BTU/hour to milliwatts?

10 BTU/h = 2930.71 mW. For 100 BTU/h the answer is 29307.1 mW. Use the calculator on this page for any other value.

When to convert btu/hour to milliwatt

1Car engines (hp ↔ kW)
2Electrical appliances (W, kW)
3Air conditioning (BTU/h ↔ kW)
4Renewable energy (MW, GW)

Power conversion — common questions

How many watts in 1 horsepower?

Mechanical: 1 hp ≈ 745.7 W. Metric: 1 hp (PS) ≈ 735.5 W. The mechanical definition is standard in the US/UK; metric is used in continental Europe.

How do I convert AC BTU/h to kW?

Divide BTU/h by 3,412 (or multiply by 0.000293). A 12,000 BTU/h AC ≈ 3.52 kW of cooling power.

See all power converters