The watt (W) is the SI unit of power, equal to one joule of energy transferred per second.
Watts to Yoctowatts
Convert Watt (W) to Yoctowatt (yW) instantly with an exact formula, conversion table, and FAQ.
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Convert watts (W) to yoctowatts (yW) instantly with formula, conversion table, and FAQ.
Context values
Some unit families need one extra value for a physically accurate result.
A Yoctowatt (yW) equals 1e-24 watt(s), a scaled unit of electrical power used for yocto-scale electrical work.
yW = W × 1.000000e+24
Results update instantly for Watts to Yoctowatts conversions.
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Formula
yW = W × 1.000000e+24
W = yW × 1.000000e-24
Conversion table
| 1 W | 1.000000e+24 yW |
| 5 W | 5.000000e+24 yW |
| 10 W | 1.000000e+25 yW |
| 20 W | 2.000000e+25 yW |
| 50 W | 5.000000e+25 yW |
| 100 W | 1.000000e+26 yW |
| 500 W | 5.000000e+26 yW |
| 1000 W | 1.000000e+27 yW |
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How the formula works
Both watt and yoctowatt measure the same physical quantity, so converting between them is a single multiplication. Multiply a value in watts by 1.000000e+24 to get yoctowatts. To reverse the conversion, multiply a yoctowatt value by 1.000000e-24 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 Yoctowatt (yW)?
A Yoctowatt (yW) equals 1e-24 watt(s), a scaled unit of electrical power used for yocto-scale electrical work.
How do I convert watts to yoctowatts?
Multiply the watt value by 1.000000e+24 to get the equivalent in yoctowatts. For example, 5 W × 1.000000e+24 = 5.000000e+24 yW.
Is this conversion exact?
Yes. Both units use fixed, defined scale factors, so the factor 1.000000e+24 is an exact, non-rounded value.
Can I convert yoctowatts back to watts?
Yes. Divide the yoctowatt value by 1.000000e+24, or multiply it by 1.000000e-24, to get watts.
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About converting watts to yoctowatts
The watt (W) is the SI unit of power, equal to one joule of energy transferred per second. A Yoctowatt (yW) equals 1e-24 watt(s), a scaled unit of electrical power used for yocto-scale electrical work.
Use this calculator to move between watts and yoctowatts accurately for homework, engineering, billing, or everyday electricity calculations. The Universal Converter uses exact unit factors, so results stay consistent across the site.