| megawatt | 1 MW | 2 MW | 3 MW | 4 MW | 5 MW | 6 MW | 7 MW | 8 MW | 9 MW | 10 MW | 11 MW | 12 MW | 13 MW | 14 MW | 15 MW | 16 MW | 17 MW | 18 MW | 19 MW | 20 MW | 21 MW | 22 MW | 23 MW | 24 MW | 25 MW | 26 MW | 27 MW | 28 MW | 29 MW | 30 MW | 31 MW | 32 MW | 33 MW | 34 MW | 35 MW | 36 MW | 37 MW | 38 MW | 39 MW | 40 MW | 41 MW | 42 MW | 43 MW | 44 MW | 45 MW | 46 MW | 47 MW | 48 MW | 49 MW | 50 MW | 51 MW | 52 MW | 53 MW | 54 MW | 55 MW | 56 MW | 57 MW | 58 MW | 59 MW | 60 MW | 61 MW | 62 MW | 63 MW | 64 MW | 65 MW | 66 MW | 67 MW | 68 MW | 69 MW | 70 MW | 71 MW | 72 MW | 73 MW | 74 MW | 75 MW | 76 MW | 77 MW | 78 MW | 79 MW | 80 MW | 81 MW | 82 MW | 83 MW | 84 MW | 85 MW | 86 MW | 87 MW | 88 MW | 89 MW | 90 MW | 91 MW | 92 MW | 93 MW | 94 MW | 95 MW | 96 MW | 97 MW | 98 MW | 99 MW | 100 MW |
| femtowatt | 1.0 × 1021 fW | 2.0 × 1021 fW | 3.0 × 1021 fW | 4.0 × 1021 fW | 5.0 × 1021 fW | 6.0 × 1021 fW | 7.0 × 1021 fW | 8.0 × 1021 fW | 9.0 × 1021 fW | 1.0 × 1022 fW | 1.1 × 1022 fW | 1.2 × 1022 fW | 1.3 × 1022 fW | 1.4 × 1022 fW | 1.5 × 1022 fW | 1.6 × 1022 fW | 1.7 × 1022 fW | 1.8 × 1022 fW | 1.9 × 1022 fW | 2.0 × 1022 fW | 2.1 × 1022 fW | 2.2 × 1022 fW | 2.3 × 1022 fW | 2.4 × 1022 fW | 2.5 × 1022 fW | 2.6 × 1022 fW | 2.7 × 1022 fW | 2.8 × 1022 fW | 2.9 × 1022 fW | 3.0 × 1022 fW | 3.1 × 1022 fW | 3.2 × 1022 fW | 3.3 × 1022 fW | 3.4 × 1022 fW | 3.5 × 1022 fW | 3.6 × 1022 fW | 3.7 × 1022 fW | 3.8 × 1022 fW | 3.9 × 1022 fW | 4.0 × 1022 fW | 4.1 × 1022 fW | 4.2 × 1022 fW | 4.3 × 1022 fW | 4.4 × 1022 fW | 4.5 × 1022 fW | 4.6 × 1022 fW | 4.7 × 1022 fW | 4.8 × 1022 fW | 4.9 × 1022 fW | 5.0 × 1022 fW | 5.1 × 1022 fW | 5.2 × 1022 fW | 5.3 × 1022 fW | 5.4 × 1022 fW | 5.5 × 1022 fW | 5.6 × 1022 fW | 5.7 × 1022 fW | 5.8 × 1022 fW | 5.9 × 1022 fW | 6.0 × 1022 fW | 6.1 × 1022 fW | 6.2 × 1022 fW | 6.3 × 1022 fW | 6.4 × 1022 fW | 6.5 × 1022 fW | 6.6 × 1022 fW | 6.7 × 1022 fW | 6.8 × 1022 fW | 6.9 × 1022 fW | 7.0 × 1022 fW | 7.1 × 1022 fW | 7.2 × 1022 fW | 7.3 × 1022 fW | 7.4 × 1022 fW | 7.5 × 1022 fW | 7.6 × 1022 fW | 7.7 × 1022 fW | 7.8 × 1022 fW | 7.9 × 1022 fW | 8.0 × 1022 fW | 8.1 × 1022 fW | 8.2 × 1022 fW | 8.3 × 1022 fW | 8.4 × 1022 fW | 8.5 × 1022 fW | 8.6 × 1022 fW | 8.7 × 1022 fW | 8.8 × 1022 fW | 8.9 × 1022 fW | 9.0 × 1022 fW | 9.1 × 1022 fW | 9.2 × 1022 fW | 9.3 × 1022 fW | 9.4 × 1022 fW | 9.5 × 1022 fW | 9.6 × 1022 fW | 9.7 × 1022 fW | 9.8 × 1022 fW | 9.9 × 1022 fW | 1.0 × 1023 fW |
The megawatt (MW) is equal to one million (106) watts. Many events or machines produce or sustain the conversion of energy on this scale, including large electric motors; large warships such as aircraft carriers, cruisers, and submarines; large server farms or data centers; and some scientific research equipment, such as supercolliders, and the output pulses of very large lasers. A large residential or commercial building may use several megawatts in electric power and heat. On railways, modern high-powered electric locomotives typically have a peak power output of 5 or 6 MW, although some produce much more. The Eurostar, for example, uses more than 12 MW, while heavy diesel-electric locomotives typically produce/use 3 to 5 MW. U.S. nuclear power plants have net summer capacities between about 500 and 1300 MW.
| 1 megawatts = 1.0E+21 femtowatts | 6 megawatts = 6.0E+21 femtowatts |
| 2 megawatts = 2.0E+21 femtowatts | 7 megawatts = 7.0E+21 femtowatts |
| 3 megawatts = 3.0E+21 femtowatts | 8 megawatts = 8.0E+21 femtowatts |
| 4 megawatts = 4.0E+21 femtowatts | 9 megawatts = 9.0E+21 femtowatts |
| 5 megawatts = 5.0E+21 femtowatts | 10 megawatts = 1.0E+22 femtowatts |
The femtowatt (fW) is equal to one quadrillionth (10−15) of a watt. Technologically important powers that are measured in femtowatts are typically found in reference(s) to radio and radar receivers. For example, meaningful FM tuner performance figures for sensitivity, quieting and signal-to-noise require that the RF energy applied to the antenna input be specified. These input levels are often stated in dBf (decibels referenced to 1 femtowatt). This is 0.2739 microvolt across a 75-ohm load or 0.5477 microvolt across a 300-ohm load; the specification takes into account the RF input impedance of the tuner.
| 1 femtowatts = 1.0E-21 megawatts | 6 femtowatts = 6.0E-21 megawatts |
| 2 femtowatts = 2.0E-21 megawatts | 7 femtowatts = 7.0E-21 megawatts |
| 3 femtowatts = 3.0E-21 megawatts | 8 femtowatts = 8.0E-21 megawatts |
| 4 femtowatts = 4.0E-21 megawatts | 9 femtowatts = 9.0E-21 megawatts |
| 5 femtowatts = 5.0E-21 megawatts | 10 femtowatts = 1.0E-20 megawatts |
| 1 megawatts = 1.0 × 1021 femtowatts |
| 1 femtowatts = 1.0 × 10-21 megawatts |