The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
Watts to Exawatts
Convert Watt (W) to Exawatt (EW) instantly with an exact formula, conversion table, and FAQ.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Electrical calculator
Electricity Converter
Convert watts (W) to exawatts (EW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
An Exawatt (EW) equals 1e+18 watt(s), a scaled unit of electrical power used for exa-scale electrical work.
EW = W × 1.000000e-18
Results update instantly for Watts to Exawatts conversions.
Reserved above the conversion cards and below the converter.
Formula
EW = W × 1.000000e-18
W = EW × 1.000000e+18
Conversion table
| 1 W | 1.000000e-18 EW |
| 5 W | 5.000000e-18 EW |
| 10 W | 1.000000e-17 EW |
| 20 W | 2.000000e-17 EW |
| 50 W | 5.000000e-17 EW |
| 100 W | 1.000000e-16 EW |
| 500 W | 5.000000e-16 EW |
| 1000 W | 1.000000e-15 EW |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
How the formula works
Both watt and exawatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in watts by 1.000000e-18 to get exawatts. To reverse the conversion, multiply a exawatt value by 1.000000e+18 to get back to watts.
Frequently asked questions
What is Watt (W)?
The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
What is Exawatt (EW)?
An Exawatt (EW) equals 1e+18 watt(s), a scaled unit of electrical power used for exa-scale electrical work.
How do I convert watts to exawatts?
Multiply the watt value by 1.000000e-18 to get the equivalent in exawatts. For example, 5 W × 1.000000e-18 = 5.000000e-18 EW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e-18 is an exact, non-rounded value.
Can I convert exawatts back to watts?
Yes. Divide the exawatt value by 1.000000e-18, or multiply it by 1.000000e+18, to get watts.
Reserved between the FAQ and the article so the page stays balanced.
About converting watts to exawatts
The watt (W) is the SI unit of power, equal to one joule of energy transferred per second. An Exawatt (EW) equals 1e+18 watt(s), a scaled unit of electrical power used for exa-scale electrical work.
Use this calculator to move between watts and exawatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.