Power rate using BTU per hour.
BTU per hour to Nanowatts Converter — BTU/h to nW
Convert BTU per hour (BTU/h) to Nanowatt (nW) using the exact conversion factor (1 btu per hour = 293,071,070.2 nanowatt). See the formula, worked examples, and conversion table.
BTU per hour to Nanowatts converter
Converter
Engineering Converter
Convert common stress, force, torque, power, and energy units used in engineering.
Context values
Some unit families need one extra value for a physically accurate result.
Nanowatt is 1e-9 watt units.
Result = input x 0.2930710702 / 1e-9.
Power units are compatible.
Reserved above the conversion cards and below the converter.
About Converting BTU per hour to Nanowatts
BTU per hour and Nanowatt both measure a quantity used in structural or mechanical engineering — commonly stress, pressure, force, torque, power, or energy — where converting between the unit conventions used in different regions, industries, or equipment specifications is a routine part of design work. Specifically: Power rate using BTU per hour, and nanowatt is 1e-9 watt units.
Formula
nanowatts = btu per hour × 293071070.172
This factor comes from each unit's defined relationship to the category's base unit: 1 btu per hour equals 0.293071070172 base units, and 1 nanowatt equals 1e-9 base units, so dividing one by the other gives the direct btu per hour-to-nanowatt factor of 293071070.172.
Simple example
1 BTU/h × 293071070.2 = 293,071,070.2 nW
1 btu per hour = 293,071,070.2 nanowatts.
Real-world example
100 BTU/h × 293071070.2 = 29,307,107,020 nW
100 btu per hour = 29,307,107,020 nanowatts.
Conversion table
| BTU per hour (BTU/h) | Nanowatt (nW) |
|---|---|
| 1 BTU/h | 293,071,070.2 nW |
| 10 BTU/h | 2,930,710,702 nW |
| 50 BTU/h | 14,653,553,510 nW |
| 100 BTU/h | 29,307,107,020 nW |
| 500 BTU/h | 146,535,535,100 nW |
| 1,000 BTU/h | 293,071,070,200 nW |
Reverse conversion: Nanowatt to BTU per hour
1 nW × 3.412142e-9 = 3.412142e-9 BTU/h
1 nanowatt = 3.412142e-9 btu per hour.
btu per hour = nanowatts × 3.412142e-9
For a page dedicated to this direction, see Nanowatt to BTU per hour.
Understanding the BTU per hour (BTU/h)
Power rate using BTU per hour.
Understanding the Nanowatt (nW)
Nanowatt is 1e-9 watt units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many nanowatts are in 1 btu per hour?
1 btu per hour equals 293,071,070.2 nanowatts, using the exact defined conversion factor rather than an estimate.
How do I convert btu per hour to nanowatt?
Multiply the btu per hour value by 293071070.2. The converter above does this instantly to whatever precision you set.
How do I convert nanowatt back to btu per hour?
Use the reverse factor: 1 nanowatt equals 3.412142e-9 btu per hour. You can also use the swap control in the converter above to flip the direction instantly.
What is a btu per hour?
BTU per hour (BTU/h) is a unit of engineering.
What is a nanowatt?
Nanowatt (nW) is a unit of engineering.
Is the btu per hour to nanowatt conversion exact?
Yes. Both btu per hour and nanowatt are defined by fixed standards rather than physical artifacts, so the factor of 293071070.2 used above is exact to as many digits as you choose to display.
Why do engineering unit conventions vary so much by region and industry?
Pressure, force, and stress can be expressed in metric (pascal, newton), US customary (psi, pound-force), or older and industry-specific units (atmosphere, torr, kip) depending on the country, industry, and even the equipment manufacturer, which is why engineers routinely need to convert between them when working across specs from different sources.