Watts to Kilowatt Hours (W → kWh)
Formula
1 W = 2.7777777777777776e-7 kWhConversion Table
| W | kWh |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00000027778 |
| 2.0000 | 0.00000055556 |
| 3.0000 | 0.00000083333 |
| 4.0000 | 0.0000011111 |
| 5.0000 | 0.0000013889 |
| 6.0000 | 0.0000016667 |
| 7.0000 | 0.0000019444 |
| 8.0000 | 0.0000022222 |
| 9.0000 | 0.0000025000 |
| 10.000 | 0.0000027778 |
| 11.000 | 0.0000030556 |
| 12.000 | 0.0000033333 |
| 13.000 | 0.0000036111 |
| 14.000 | 0.0000038889 |
| 15.000 | 0.0000041667 |
| 16.000 | 0.0000044444 |
| 17.000 | 0.0000047222 |
| 18.000 | 0.0000050000 |
| 19.000 | 0.0000052778 |
| W | kWh |
|---|---|
| 20.000 | 0.0000055556 |
| 21.000 | 0.0000058333 |
| 22.000 | 0.0000061111 |
| 23.000 | 0.0000063889 |
| 24.000 | 0.0000066667 |
| 25.000 | 0.0000069444 |
| 26.000 | 0.0000072222 |
| 27.000 | 0.0000075000 |
| 28.000 | 0.0000077778 |
| 29.000 | 0.0000080556 |
| 30.000 | 0.0000083333 |
| 31.000 | 0.0000086111 |
| 32.000 | 0.0000088889 |
| 33.000 | 0.0000091667 |
| 34.000 | 0.0000094444 |
| 35.000 | 0.0000097222 |
| 36.000 | 0.000010000 |
| 37.000 | 0.000010278 |
| 38.000 | 0.000010556 |
| 39.000 | 0.000010833 |
| W | kWh |
|---|---|
| 40.000 | 0.000011111 |
| 41.000 | 0.000011389 |
| 42.000 | 0.000011667 |
| 43.000 | 0.000011944 |
| 44.000 | 0.000012222 |
| 45.000 | 0.000012500 |
| 46.000 | 0.000012778 |
| 47.000 | 0.000013056 |
| 48.000 | 0.000013333 |
| 49.000 | 0.000013611 |
| 50.000 | 0.000013889 |
| 51.000 | 0.000014167 |
| 52.000 | 0.000014444 |
| 53.000 | 0.000014722 |
| 54.000 | 0.000015000 |
| 55.000 | 0.000015278 |
| 56.000 | 0.000015556 |
| 57.000 | 0.000015833 |
| 58.000 | 0.000016111 |
| 59.000 | 0.000016389 |
| W | kWh |
|---|---|
| 60.000 | 0.000016667 |
| 61.000 | 0.000016944 |
| 62.000 | 0.000017222 |
| 63.000 | 0.000017500 |
| 64.000 | 0.000017778 |
| 65.000 | 0.000018056 |
| 66.000 | 0.000018333 |
| 67.000 | 0.000018611 |
| 68.000 | 0.000018889 |
| 69.000 | 0.000019167 |
| 70.000 | 0.000019444 |
| 71.000 | 0.000019722 |
| 72.000 | 0.000020000 |
| 73.000 | 0.000020278 |
| 74.000 | 0.000020556 |
| 75.000 | 0.000020833 |
| 76.000 | 0.000021111 |
| 77.000 | 0.000021389 |
| 78.000 | 0.000021667 |
| 79.000 | 0.000021944 |
Watts to Kilowatt Hours Conversion
Converting Watts (W) to Kilowatt Hours (kWh) is a common energy and power conversion. 1 W equals 0 kWh. For example, 100 W is equal to 0.000028 kWh.
Quick Mental Math: Watts to Kilowatt Hours
For energy conversions, identify the unit scale difference in the prefix or definition.
Why is converting Watts to Kilowatt Hours tricky?
Energy unit conversions involve non-linear factors across different measurement systems.
Quick Reference Values
1 W = 0 kWh. 5 W = 0.000001 kWh. 10 W = 0.000003 kWh. 25 W = 0.000007 kWh. 50 W = 0.000014 kWh. 100 W = 0.000028 kWh.
What is Watts?
Watts (W) is a unit of energy and power. The watt (W) is the SI unit of power, defined as one joule per second (1 W = 1 J/s). It measures the rate of energy transfer or conversion. The watt is named after James Watt and standardized by the BIPM according to the International System of Units [bipm-si-brochure]. Named after engineer James Watt in the late 19th century, the watt was adopted officially by the CIPM and BIPM to quantify mechanical and electrical power consistently. It became part of the SI base units in 1960 [bipm-si-brochure]. Watts measure power output and consumption in electrical, mechanical, and thermal systems globally. It is used across industries, including electronics, automotive, and power generation, following ISO and NIST standards [nist-sp-811].
What is Kilowatt Hours?
Kilowatt Hours (kWh) is a unit of energy and power. A kilowatt-hour (kWh) measures electrical energy equivalent to one kilowatt of power supplied for one hour. It equals 3.6 million joules and is the standard billing unit for electricity consumption worldwide [bipm-si-brochure]. The kilowatt-hour emerged with widespread electric power usage in the late 19th and early 20th centuries. It became standardized as electric utilities adopted it for consumer energy measurement and billing [bipm-si-brochure]. The kWh is the universal unit for residential and commercial electricity billing globally, including in North America, Europe, and Asia. It is used extensively in energy management, engineering, and environmental reporting [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: watt, wat, wats, wattss, kilowatt hour, kw/h, kwh, kilowatthour. All of these refer to the Watts to Kilowatt Hours conversion.