Watts to Watt Hours (W → Wh)
Formula
1 W = 0.0002777777777777778 WhConversion Table
| W | Wh |
|---|---|
| 0 | 0 |
| 1.0000 | 0.00027778 |
| 2.0000 | 0.00055556 |
| 3.0000 | 0.00083333 |
| 4.0000 | 0.0011111 |
| 5.0000 | 0.0013889 |
| 6.0000 | 0.0016667 |
| 7.0000 | 0.0019444 |
| 8.0000 | 0.0022222 |
| 9.0000 | 0.0025000 |
| 10.000 | 0.0027778 |
| 11.000 | 0.0030556 |
| 12.000 | 0.0033333 |
| 13.000 | 0.0036111 |
| 14.000 | 0.0038889 |
| 15.000 | 0.0041667 |
| 16.000 | 0.0044444 |
| 17.000 | 0.0047222 |
| 18.000 | 0.0050000 |
| 19.000 | 0.0052778 |
| W | Wh |
|---|---|
| 20.000 | 0.0055556 |
| 21.000 | 0.0058333 |
| 22.000 | 0.0061111 |
| 23.000 | 0.0063889 |
| 24.000 | 0.0066667 |
| 25.000 | 0.0069444 |
| 26.000 | 0.0072222 |
| 27.000 | 0.0075000 |
| 28.000 | 0.0077778 |
| 29.000 | 0.0080556 |
| 30.000 | 0.0083333 |
| 31.000 | 0.0086111 |
| 32.000 | 0.0088889 |
| 33.000 | 0.0091667 |
| 34.000 | 0.0094444 |
| 35.000 | 0.0097222 |
| 36.000 | 0.010000 |
| 37.000 | 0.010278 |
| 38.000 | 0.010556 |
| 39.000 | 0.010833 |
| W | Wh |
|---|---|
| 40.000 | 0.011111 |
| 41.000 | 0.011389 |
| 42.000 | 0.011667 |
| 43.000 | 0.011944 |
| 44.000 | 0.012222 |
| 45.000 | 0.012500 |
| 46.000 | 0.012778 |
| 47.000 | 0.013056 |
| 48.000 | 0.013333 |
| 49.000 | 0.013611 |
| 50.000 | 0.013889 |
| 51.000 | 0.014167 |
| 52.000 | 0.014444 |
| 53.000 | 0.014722 |
| 54.000 | 0.015000 |
| 55.000 | 0.015278 |
| 56.000 | 0.015556 |
| 57.000 | 0.015833 |
| 58.000 | 0.016111 |
| 59.000 | 0.016389 |
| W | Wh |
|---|---|
| 60.000 | 0.016667 |
| 61.000 | 0.016944 |
| 62.000 | 0.017222 |
| 63.000 | 0.017500 |
| 64.000 | 0.017778 |
| 65.000 | 0.018056 |
| 66.000 | 0.018333 |
| 67.000 | 0.018611 |
| 68.000 | 0.018889 |
| 69.000 | 0.019167 |
| 70.000 | 0.019444 |
| 71.000 | 0.019722 |
| 72.000 | 0.020000 |
| 73.000 | 0.020278 |
| 74.000 | 0.020556 |
| 75.000 | 0.020833 |
| 76.000 | 0.021111 |
| 77.000 | 0.021389 |
| 78.000 | 0.021667 |
| 79.000 | 0.021944 |
Watts to Watt Hours Conversion
Converting Watts (W) to Watt Hours (Wh) is a common energy and power conversion. 1 W equals 0.000278 Wh. For example, 100 W is equal to 0.027778 Wh.
Quick Mental Math: Watts to Watt Hours
For energy conversions, identify the unit scale difference in the prefix or definition.
Why is converting Watts to Watt Hours tricky?
Energy unit conversions involve non-linear factors across different measurement systems.
Quick Reference Values
1 W = 0.000278 Wh. 5 W = 0.001389 Wh. 10 W = 0.002778 Wh. 25 W = 0.006944 Wh. 50 W = 0.013889 Wh. 100 W = 0.027778 Wh.
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 Watt Hours?
Watt Hours (Wh) is a unit of energy and power. A watt-hour (Wh) measures energy equivalent to one watt of power expended for one hour. It equals 3600 joules in SI derived units, where 1 Wh = 1 W × 3600 s. Watt-hours quantify electrical energy consumption and storage in batteries and utility meters [nist-si-guide]. The watt-hour emerged with the widespread use of electric power in the late 19th century. It was standardized as an energy unit by electrical engineers and later formalized within the International System of Units framework [bipm-si-brochure]. Utility companies worldwide bill electricity in kilowatt-hours, a multiple of watt-hours. The unit is critical for residential, commercial, and industrial energy monitoring and renewable energy systems across all continents [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: watt, wat, wats, wattss, watt hours, watt-hour, watt hour, watthours. All of these refer to the Watts to Watt Hours conversion.