Watts to Megajoules (W → MJ)
Formula
1 W = 0.000001 MJConversion Table
| W | MJ |
|---|---|
| 0 | 0 |
| 1.0000 | 0.0000010000 |
| 2.0000 | 0.0000020000 |
| 3.0000 | 0.0000030000 |
| 4.0000 | 0.0000040000 |
| 5.0000 | 0.0000050000 |
| 6.0000 | 0.0000060000 |
| 7.0000 | 0.0000070000 |
| 8.0000 | 0.0000080000 |
| 9.0000 | 0.0000090000 |
| 10.000 | 0.000010000 |
| 11.000 | 0.000011000 |
| 12.000 | 0.000012000 |
| 13.000 | 0.000013000 |
| 14.000 | 0.000014000 |
| 15.000 | 0.000015000 |
| 16.000 | 0.000016000 |
| 17.000 | 0.000017000 |
| 18.000 | 0.000018000 |
| 19.000 | 0.000019000 |
| W | MJ |
|---|---|
| 20.000 | 0.000020000 |
| 21.000 | 0.000021000 |
| 22.000 | 0.000022000 |
| 23.000 | 0.000023000 |
| 24.000 | 0.000024000 |
| 25.000 | 0.000025000 |
| 26.000 | 0.000026000 |
| 27.000 | 0.000027000 |
| 28.000 | 0.000028000 |
| 29.000 | 0.000029000 |
| 30.000 | 0.000030000 |
| 31.000 | 0.000031000 |
| 32.000 | 0.000032000 |
| 33.000 | 0.000033000 |
| 34.000 | 0.000034000 |
| 35.000 | 0.000035000 |
| 36.000 | 0.000036000 |
| 37.000 | 0.000037000 |
| 38.000 | 0.000038000 |
| 39.000 | 0.000039000 |
| W | MJ |
|---|---|
| 40.000 | 0.000040000 |
| 41.000 | 0.000041000 |
| 42.000 | 0.000042000 |
| 43.000 | 0.000043000 |
| 44.000 | 0.000044000 |
| 45.000 | 0.000045000 |
| 46.000 | 0.000046000 |
| 47.000 | 0.000047000 |
| 48.000 | 0.000048000 |
| 49.000 | 0.000049000 |
| 50.000 | 0.000050000 |
| 51.000 | 0.000051000 |
| 52.000 | 0.000052000 |
| 53.000 | 0.000053000 |
| 54.000 | 0.000054000 |
| 55.000 | 0.000055000 |
| 56.000 | 0.000056000 |
| 57.000 | 0.000057000 |
| 58.000 | 0.000058000 |
| 59.000 | 0.000059000 |
| W | MJ |
|---|---|
| 60.000 | 0.000060000 |
| 61.000 | 0.000061000 |
| 62.000 | 0.000062000 |
| 63.000 | 0.000063000 |
| 64.000 | 0.000064000 |
| 65.000 | 0.000065000 |
| 66.000 | 0.000066000 |
| 67.000 | 0.000067000 |
| 68.000 | 0.000068000 |
| 69.000 | 0.000069000 |
| 70.000 | 0.000070000 |
| 71.000 | 0.000071000 |
| 72.000 | 0.000072000 |
| 73.000 | 0.000073000 |
| 74.000 | 0.000074000 |
| 75.000 | 0.000075000 |
| 76.000 | 0.000076000 |
| 77.000 | 0.000077000 |
| 78.000 | 0.000078000 |
| 79.000 | 0.000079000 |
Watts to Megajoules Conversion
Converting Watts (W) to Megajoules (MJ) is a common energy and power conversion. 1 W equals 0.000001 MJ. For example, 100 W is equal to 0.0001 MJ.
Quick Mental Math: Watts to Megajoules
Multiply watts by seconds to get joules; one watt for one second equals one joule.
Why is converting Watts to Megajoules tricky?
Watts are power (energy per second), not energy itself; time must be included.
Quick Reference Values
1 W = 0.000001 MJ. 5 W = 0.000005 MJ. 10 W = 0.00001 MJ. 25 W = 0.000025 MJ. 50 W = 0.00005 MJ. 100 W = 0.0001 MJ.
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 Megajoules?
Megajoules (MJ) is a unit of energy and power. A megajoule equals one million joules, the SI unit of energy, defined as the work done when applying a force of one newton over one meter. One MJ equals 1,000,000 J exactly. It is used to quantify large energy amounts in scientific, industrial, and engineering contexts [bipm-si-brochure]. The joule was named after James Prescott Joule in the 19th century, honoring his work on energy. The megajoule as a multiple of the joule was standardized with the SI system established by BIPM in 1960 to handle large-scale energy measurements [bipm-si-brochure]. Megajoules are widely used internationally in energy production, mechanical work quantification, and fuel energy content. Industries such as electricity generation, chemical manufacturing, and automotive engineering rely on MJ for reporting energy values [nist-si-guide].
Common Misspellings
People often search for this conversion using these alternate spellings: watt, wat, wats, wattss, mega joules, megajoule, mega-joules, megajoules energy. All of these refer to the Watts to Megajoules conversion.