Watt-hours to Kilowatt-hours

Convert Wh to kWh instantly — with a table, common energy values, and a live calculator.

1 Wh equals 0.001 kWh.

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Result (kWh)0.001 kWh

Wh to kWh table

WhkWh
1 Wh0.001 kWh
2 Wh0.002 kWh
3 Wh0.003 kWh
5 Wh0.005 kWh
10 Wh0.01 kWh
15 Wh0.015 kWh
20 Wh0.02 kWh
25 Wh0.025 kWh
30 Wh0.03 kWh
40 Wh0.04 kWh
50 Wh0.05 kWh
60 Wh0.06 kWh
75 Wh0.075 kWh
90 Wh0.09 kWh
100 Wh0.1 kWh
120 Wh0.12 kWh
150 Wh0.15 kWh
200 Wh0.2 kWh
250 Wh0.25 kWh
300 Wh0.3 kWh
400 Wh0.4 kWh
500 Wh0.5 kWh

kWh to Wh (reverse)

kWhWh
1 kWh1000 Wh
2 kWh2000 Wh
3 kWh3000 Wh
5 kWh5000 Wh
10 kWh10000 Wh
15 kWh15000 Wh
20 kWh20000 Wh
25 kWh25000 Wh
30 kWh30000 Wh
40 kWh40000 Wh
50 kWh50000 Wh
60 kWh60000 Wh
75 kWh75000 Wh
90 kWh90000 Wh
100 kWh100000 Wh
120 kWh120000 Wh
150 kWh150000 Wh
200 kWh200000 Wh
250 kWh250000 Wh
300 kWh300000 Wh
400 kWh400000 Wh
500 kWh500000 Wh

Common energy values

WhkWh
5 Wh0.005 kWh
10 Wh0.01 kWh
25 Wh0.025 kWh
50 Wh0.05 kWh
75 Wh0.075 kWh
100 Wh0.1 kWh
120 Wh0.12 kWh
150 Wh0.15 kWh
200 Wh0.2 kWh
300 Wh0.3 kWh
400 Wh0.4 kWh
500 Wh0.5 kWh

How it scales

0.030.050.080.10255075100Wh

1 kWh in other units

860kcal3.6MJ3412BTU1000Wh

The ratio at a glance

1 Wh0 kWh

Joules, kWh, and calories — the key energy units

Joules (J), kilojoules (kJ), and megajoules (MJ) are the SI units of energy. The kilowatt-hour (kWh) is the unit on your electricity bill and equals 3.6 MJ. With calories there are two sizes that must not be confused: the kilocalorie (kcal) on nutrition labels equals exactly 4184 J (4.184 kJ), while the small calorie (cal) is only 4.184 J — they differ by a factor of 1000. The BTU (British thermal unit) equals 1055.06 J and is used in heating and air-conditioning.

Energy conversions are exact and rest on fixed factors — for more unit pairs, use our energy conversion hub.

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Frequently asked questions

How many kWh are in 1 Wh?

1 Wh equals 0.001 kWh.

How many kWh are in 2 Wh?

2 Wh equal 0.002 kWh.

How do I convert Wh to kWh?

Divide the energy in Wh by 1000 to get kWh.

Is the Wh-to-kWh conversion exact?

Yes. Energy conversions are exact; the values here are only rounded to two decimal places.

What are these energy units used for?

Joules (J), kilojoules (kJ), and megajoules (MJ) are the SI units of energy. The kilowatt-hour (kWh) is the unit on your electricity bill, kilocalories (kcal) appear on food labels, and the BTU (British thermal unit) is used in heating and air-conditioning.

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