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Energy • NIST Exact

BTUs → Kilowatt-hours

BTU → kWh

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NIST Exact

Based on U.S. National Institute of Standards

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BTUs to Kilowatt-hours Formula

To convert from BTUs to Kilowatt-hours, you can use the following formula:

Kilowatt-hours = BTUs × NaN

This means you need to multiply your BTUs value by NaN to get the equivalent value in Kilowatt-hours.

BTU → kWh Reference Table

BTU kWh
0.001 BTU 2.930710702e-7 kWh
0.002 BTU 5.861421403e-7 kWh
0.003 BTU 8.792132105e-7 kWh
0.004 BTU 0.000001172284281 kWh
0.005 BTU 0.000001465355351 kWh
0.006 BTU 0.000001758426421 kWh
0.007 BTU 0.000002051497491 kWh
0.008 BTU 0.000002344568561 kWh
0.009 BTU 0.000002637639632 kWh
0.01 BTU 0.000002930710702 kWh
0.02 BTU 0.000005861421403 kWh
0.03 BTU 0.000008792132105 kWh
0.04 BTU 0.00001172284281 kWh
0.05 BTU 0.00001465355351 kWh
0.06 BTU 0.00001758426421 kWh
0.07 BTU 0.00002051497491 kWh
0.08 BTU 0.00002344568561 kWh
0.09 BTU 0.00002637639632 kWh
0.1 BTU 0.00002930710702 kWh
0.2 BTU 0.00005861421403 kWh
0.3 BTU 0.00008792132105 kWh
0.4 BTU 0.0001172284281 kWh
0.5 BTU 0.0001465355351 kWh
0.6 BTU 0.0001758426421 kWh
0.7 BTU 0.0002051497491 kWh
0.8 BTU 0.0002344568561 kWh
0.9 BTU 0.0002637639632 kWh
1 BTU 0.0002930710702 kWh
1.5 BTU 0.0004396066053 kWh
2 BTU 0.0005861421403 kWh
2.5 BTU 0.0007326776754 kWh
3 BTU 0.0008792132105 kWh
3.5 BTU 0.001025748746 kWh
4 BTU 0.001172284281 kWh
4.5 BTU 0.001318819816 kWh
5 BTU 0.001465355351 kWh
5.5 BTU 0.001611890886 kWh
6 BTU 0.001758426421 kWh
6.5 BTU 0.001904961956 kWh
7 BTU 0.002051497491 kWh
7.5 BTU 0.002198033026 kWh
8 BTU 0.002344568561 kWh
8.5 BTU 0.002491104096 kWh
9 BTU 0.002637639632 kWh
9.5 BTU 0.002784175167 kWh
10 BTU 0.002930710702 kWh
11 BTU 0.003223781772 kWh
12 BTU 0.003516852842 kWh
13 BTU 0.003809923912 kWh
14 BTU 0.004102994982 kWh
15 BTU 0.004396066053 kWh
16 BTU 0.004689137123 kWh
17 BTU 0.004982208193 kWh
18 BTU 0.005275279263 kWh
19 BTU 0.005568350333 kWh
20 BTU 0.005861421403 kWh
25 BTU 0.007326776754 kWh
30 BTU 0.008792132105 kWh
35 BTU 0.01025748746 kWh
40 BTU 0.01172284281 kWh
45 BTU 0.01318819816 kWh
50 BTU 0.01465355351 kWh
55 BTU 0.01611890886 kWh
60 BTU 0.01758426421 kWh
65 BTU 0.01904961956 kWh
70 BTU 0.02051497491 kWh
75 BTU 0.02198033026 kWh
80 BTU 0.02344568561 kWh
85 BTU 0.02491104096 kWh
90 BTU 0.02637639632 kWh
95 BTU 0.02784175167 kWh
100 BTU 0.02930710702 kWh
120 BTU 0.03516852842 kWh
125 BTU 0.03663388377 kWh
130 BTU 0.03809923912 kWh
140 BTU 0.04102994982 kWh
150 BTU 0.04396066053 kWh
160 BTU 0.04689137123 kWh
175 BTU 0.05128743728 kWh
180 BTU 0.05275279263 kWh
200 BTU 0.05861421403 kWh
225 BTU 0.06594099079 kWh
250 BTU 0.07326776754 kWh
275 BTU 0.0805945443 kWh
300 BTU 0.08792132105 kWh
350 BTU 0.1025748746 kWh
400 BTU 0.1172284281 kWh
450 BTU 0.1318819816 kWh
500 BTU 0.1465355351 kWh
600 BTU 0.1758426421 kWh
700 BTU 0.2051497491 kWh
750 BTU 0.2198033026 kWh
800 BTU 0.2344568561 kWh
900 BTU 0.2637639632 kWh
1000 BTU 0.2930710702 kWh
1200 BTU 0.3516852842 kWh
1250 BTU 0.3663388377 kWh
1500 BTU 0.4396066053 kWh
1750 BTU 0.5128743728 kWh
2000 BTU 0.5861421403 kWh
2500 BTU 0.7326776754 kWh
3000 BTU 0.8792132105 kWh
4000 BTU 1.172284281 kWh
4500 BTU 1.318819816 kWh
5000 BTU 1.465355351 kWh
6000 BTU 1.758426421 kWh
7000 BTU 2.051497491 kWh
7500 BTU 2.198033026 kWh
8000 BTU 2.344568561 kWh
9000 BTU 2.637639632 kWh
10000 BTU 2.930710702 kWh
15000 BTU 4.396066053 kWh
20000 BTU 5.861421403 kWh
25000 BTU 7.326776754 kWh
50000 BTU 14.65355351 kWh
75000 BTU 21.98033026 kWh
100000 BTU 29.30710702 kWh

Values based on NIST SP 811 conversion factors

Why Convert BTUs to Kilowatt-hours?

Converting between btus (BTU) and kilowatt-hours (kWh) is one of the most common energy conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert BTU to kWh saves time and prevents errors.

Energy conversions from BTU to kWh are crucial for dietitians, physicists, and engineers. In nutrition, understanding the link between calories and joules helps individuals manage their diet and energy intake effectively. In the power sector, converting between kilowatt-hours and British Thermal Units (BTU) is necessary for sizing heating and cooling systems for homes and offices. Physicists rely on precise energy unit conversions to calculate work, heat, and thermodynamic processes. Whether tracking fitness goals or analyzing home energy bills, accurate conversion empowers users to make better health and financial decisions.

How to Convert BTUs to Kilowatt-hours

To convert btus to kilowatt-hours, use the following formula:

kWh = BTU × 0.0002930710702

Example: 1 BTU = 0.0002930710702 kWh

For example, 5 BTU = 0.001465355351 kWh, 10 BTU = 0.002930710702 kWh, and 100 BTU = 0.02930710702 kWh. For larger values, 1000 BTU = 0.2930710702 kWh. Conversely, 1 kWh = 3412.141633 BTU. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Mistakes to Avoid

  • Calorie confusion: Food 'Calories' are actually kilocalories (kcal).
  • Joule scale: 1 kWh is 3.6 million Joules (orders of magnitude difference).
  • Power vs Energy: mixing up Watts (power) and Watt-hours (energy).

Pro Tips

  • Food labels: Learn to read kcal; average adult needs ~2000 kcal/day.
  • Battery capacity: Wh = V * Ah. Useful for comparing different voltage batteries.
  • Efficiency: Energy cannot be created/destroyed, only converted (with some loss as heat).

What is a BTU?

British Thermal Unit. Heat to raise 1 lb of water by 1°F.

Standard in the US for HVAC systems.

What is a Kilowatt-hour?

The kilowatt-hour (kWh) is a unit of energy equal to 3.6 megajoules. It represents the energy consumed by a 1,000-watt appliance running for one hour.

Kilowatt-hours are the standard unit for electricity billing worldwide. It measures residential and industrial electrical energy consumption.

Frequently Asked Questions

Energy More Conversions

kJ → kcalkcal → kJJ → calcal → JkWh → JBTU → J

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