Zettawatts: conversions & definition
Zettawatts (ZW) represent power. One unit equals 10^21 W. One watt represents energy transfer at one joule per second.
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Each row converts one ZW. Open a converter to enter any value and see its formula, worked example and reference table. Results below are rounded to 10 significant digits.
| Convert to | Equivalent value | Calculator |
|---|---|---|
| Watts (W) | ≈ 1e+21 | Convert ZW to W |
| Milliwatts (mW) | ≈ 1e+24 | Convert ZW to mW |
| Kilowatts (kW) | ≈ 1e+18 | Convert ZW to kW |
| Microwatts (µW) | ≈ 1e+27 | Convert ZW to µW |
| Megawatts (MW) | ≈ 1e+15 | Convert ZW to MW |
| Nanowatts (nW) | ≈ 1e+30 | Convert ZW to nW |
| Gigawatts (GW) | ≈ 1e+12 | Convert ZW to GW |
| Centiwatts (cW) | ≈ 1e+23 | Convert ZW to cW |
| Deciwatts (dW) | ≈ 1e+22 | Convert ZW to dW |
| Hectowatts (hW) | ≈ 1e+19 | Convert ZW to hW |
| Decawatts (daW) | ≈ 1e+20 | Convert ZW to daW |
| Picowatts (pW) | ≈ 1e+33 | Convert ZW to pW |
| Terawatts (TW) | ≈ 1,000,000,000 | Convert ZW to TW |
| Femtowatts (fW) | ≈ 1e+36 | Convert ZW to fW |
| Petawatts (PW) | ≈ 1,000,000 | Convert ZW to PW |
| Attowatts (aW) | ≈ 1e+39 | Convert ZW to aW |
| Exawatts (EW) | ≈ 1,000 | Convert ZW to EW |
| Zeptowatts (zW) | ≈ 1e+42 | Convert ZW to zW |
| Yoctowatts (yW) | ≈ 1e+45 | Convert ZW to yW |
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Choose units that represent the same quantity and preserve the measurement conditions. A scale conversion changes the number and unit together; it does not change the physical amount or improve the accuracy of your measurement.
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