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Power • NIST Exact

Watts → BTUs per Hour

W → BTU/h

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NIST Exact

Based on U.S. National Institute of Standards

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Watts to BTUs per Hour Formula

To convert from Watts to BTUs per Hour, you can use the following formula:

BTUs per Hour = Watts × NaN

This means you need to multiply your Watts value by NaN to get the equivalent value in BTUs per Hour.

W → BTU/h Reference Table

W BTU/h
0.001 W 0.003412141633 BTU/h
0.002 W 0.006824283266 BTU/h
0.003 W 0.0102364249 BTU/h
0.004 W 0.01364856653 BTU/h
0.005 W 0.01706070817 BTU/h
0.006 W 0.0204728498 BTU/h
0.007 W 0.02388499143 BTU/h
0.008 W 0.02729713307 BTU/h
0.009 W 0.0307092747 BTU/h
0.01 W 0.03412141633 BTU/h
0.02 W 0.06824283266 BTU/h
0.03 W 0.102364249 BTU/h
0.04 W 0.1364856653 BTU/h
0.05 W 0.1706070817 BTU/h
0.06 W 0.204728498 BTU/h
0.07 W 0.2388499143 BTU/h
0.08 W 0.2729713307 BTU/h
0.09 W 0.307092747 BTU/h
0.1 W 0.3412141633 BTU/h
0.2 W 0.6824283266 BTU/h
0.3 W 1.02364249 BTU/h
0.4 W 1.364856653 BTU/h
0.5 W 1.706070817 BTU/h
0.6 W 2.04728498 BTU/h
0.7 W 2.388499143 BTU/h
0.8 W 2.729713307 BTU/h
0.9 W 3.07092747 BTU/h
1 W 3.412141633 BTU/h
1.5 W 5.11821245 BTU/h
2 W 6.824283266 BTU/h
2.5 W 8.530354083 BTU/h
3 W 10.2364249 BTU/h
3.5 W 11.94249572 BTU/h
4 W 13.64856653 BTU/h
4.5 W 15.35463735 BTU/h
5 W 17.06070817 BTU/h
5.5 W 18.76677898 BTU/h
6 W 20.4728498 BTU/h
6.5 W 22.17892062 BTU/h
7 W 23.88499143 BTU/h
7.5 W 25.59106225 BTU/h
8 W 27.29713307 BTU/h
8.5 W 29.00320388 BTU/h
9 W 30.7092747 BTU/h
9.5 W 32.41534551 BTU/h
10 W 34.12141633 BTU/h
11 W 37.53355796 BTU/h
12 W 40.9456996 BTU/h
13 W 44.35784123 BTU/h
14 W 47.76998286 BTU/h
15 W 51.1821245 BTU/h
16 W 54.59426613 BTU/h
17 W 58.00640776 BTU/h
18 W 61.4185494 BTU/h
19 W 64.83069103 BTU/h
20 W 68.24283266 BTU/h
25 W 85.30354083 BTU/h
30 W 102.364249 BTU/h
35 W 119.4249572 BTU/h
40 W 136.4856653 BTU/h
45 W 153.5463735 BTU/h
50 W 170.6070817 BTU/h
55 W 187.6677898 BTU/h
60 W 204.728498 BTU/h
65 W 221.7892062 BTU/h
70 W 238.8499143 BTU/h
75 W 255.9106225 BTU/h
80 W 272.9713307 BTU/h
85 W 290.0320388 BTU/h
90 W 307.092747 BTU/h
95 W 324.1534551 BTU/h
100 W 341.2141633 BTU/h
120 W 409.456996 BTU/h
125 W 426.5177041 BTU/h
130 W 443.5784123 BTU/h
140 W 477.6998286 BTU/h
150 W 511.821245 BTU/h
160 W 545.9426613 BTU/h
175 W 597.1247858 BTU/h
180 W 614.185494 BTU/h
200 W 682.4283266 BTU/h
225 W 767.7318675 BTU/h
250 W 853.0354083 BTU/h
275 W 938.3389491 BTU/h
300 W 1023.64249 BTU/h
350 W 1194.249572 BTU/h
400 W 1364.856653 BTU/h
450 W 1535.463735 BTU/h
500 W 1706.070817 BTU/h
600 W 2047.28498 BTU/h
700 W 2388.499143 BTU/h
750 W 2559.106225 BTU/h
800 W 2729.713307 BTU/h
900 W 3070.92747 BTU/h
1000 W 3412.141633 BTU/h
1200 W 4094.56996 BTU/h
1250 W 4265.177041 BTU/h
1500 W 5118.21245 BTU/h
1750 W 5971.247858 BTU/h
2000 W 6824.283266 BTU/h
2500 W 8530.354083 BTU/h
3000 W 10236.4249 BTU/h
4000 W 13648.56653 BTU/h
4500 W 15354.63735 BTU/h
5000 W 17060.70817 BTU/h
6000 W 20472.8498 BTU/h
7000 W 23884.99143 BTU/h
7500 W 25591.06225 BTU/h
8000 W 27297.13307 BTU/h
9000 W 30709.2747 BTU/h
10000 W 34121.41633 BTU/h
15000 W 51182.1245 BTU/h
20000 W 68242.83266 BTU/h
25000 W 85303.54083 BTU/h
50000 W 170607.0817 BTU/h
75000 W 255910.6225 BTU/h
100000 W 341214.1633 BTU/h

Values based on NIST SP 811 conversion factors

Why Convert Watts to BTUs per Hour?

Converting between watts (W) and btus per hour (BTU/h) is one of the most common power conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert W to BTU/h saves time and prevents errors.

Power conversions (W to BTU/h) are essential for automotive enthusiasts, electrical engineers, and athletes. Car buyers frequently convert horsepower to kilowatts to compare engine performance across international brands. In electrical engineering, sizing generators and motors requires consistent power units to prevent overloads and ensure compatibility. Cyclists and rowers use power meters to track output in watts, converting these figures to estimate calorie burn or compare efforts. Misinterpreting power ratings can result in buying underpowered equipment or damaging electrical systems, highlighting the need for accurate conversion tools.

How to Convert Watts to BTUs per Hour

To convert watts to btus per hour, use the following formula:

BTU/h = W × 3.412141633

Example: 1 W = 3.412141633 BTU/h

For example, 5 W = 17.06070817 BTU/h, 10 W = 34.12141633 BTU/h, and 100 W = 341.2141633 BTU/h. For larger values, 1000 W = 3412.141633 BTU/h. Conversely, 1 BTU/h = 0.2930710702 W. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

  • kW vs kWh: kW is power (rate), kWh is energy (total used).
  • HP variations: Mechanical HP (~745.7W) vs Metric HP (~735.5W).
  • Apparent Power: Watts vs Volt-Amps (VA) differ due to power factor.

Pro Tips

  • LED bulbs: A 10W LED replaces a 60W incandescent (saves energy).
  • Appliance labels: Check the back label for Wattage to avoid overloading strips.
  • Solar panels: Ratings are 'Peak Watts' (ideal conditions), expect less in reality.

What is a Watt?

The watt (W) is the SI derived unit of power. Defined as one joule per second. Named after James Watt.

Watts are used universally to measure the rate of energy transfer, commonly for light bulbs, electronics, and small appliances.

What is a BTU per Hour?

A unit of power representing energy rate (BTU/h).

HVAC appliance ratings.

Frequently Asked Questions

Power More Conversions

kW → hphp → kWW → kWkW → Whp → WW → hp

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