Yoctogram is 1e-24 gram units.
Yoctograms to Micrograms Converter — yg to ug
Convert Yoctogram (yg) to Microgram (ug) using the exact conversion factor (1 yoctogram = 1e-18 microgram). See the formula, worked examples, and conversion table.
Yoctograms to Micrograms converter
Converter
Mass/Weight Converter
Convert SI mass, imperial weight, jewelry, atomic, and astronomy mass units.
Context values
Some unit families need one extra value for a physically accurate result.
Microgram is 0.000001 gram units.
Result = input x 1e-27 / 1e-9.
Mass uses the kilogram as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Yoctograms to Micrograms
Weight conversions between Yoctogram and Microgram come up constantly in everyday commerce, shipping, and cooking, since US packaging is usually labeled in pounds while most of the rest of the world uses kilograms. Specifically: Yoctogram is 1e-24 gram units, and microgram is 0.000001 gram units.
Formula
micrograms = yoctograms × 1e-18
This factor comes from each unit's defined relationship to the category's base unit: 1 yoctogram equals 1e-27 base units, and 1 microgram equals 1e-9 base units, so dividing one by the other gives the direct yoctogram-to-microgram factor of 1e-18.
Simple example
1 yg × 1e-18 = 1e-18 ug
1 yoctogram = 1e-18 micrograms.
Real-world example
50 yg × 1e-18 = 5e-17 ug
50 yoctograms = 5e-17 micrograms.
Conversion table
| Yoctogram (yg) | Microgram (ug) |
|---|---|
| 1 yg | 1e-18 ug |
| 5 yg | 5e-18 ug |
| 10 yg | 1e-17 ug |
| 25 yg | 2.5e-17 ug |
| 50 yg | 5e-17 ug |
| 100 yg | 1e-16 ug |
Reverse conversion: Microgram to Yoctogram
1e-18 ug × 1e+18 = 1 yg
1e-18 micrograms = 1 yoctograms.
yoctograms = micrograms × 1e+18
For a page dedicated to this direction, see Microgram to Yoctogram.
Understanding the Yoctogram (yg)
Yoctogram is 1e-24 gram units.
Understanding the Microgram (ug)
Microgram is 0.000001 gram units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograms are in 1 yoctogram?
1 yoctogram equals 1e-18 micrograms, using the exact defined conversion factor rather than an estimate.
How do I convert yoctogram to microgram?
Multiply the yoctogram value by 1e-18. The converter above does this instantly to whatever precision you set.
How do I convert microgram back to yoctogram?
Use the reverse factor: 1 microgram equals 1e+18 yoctograms. You can also use the swap control in the converter above to flip the direction instantly.
What is a yoctogram?
Yoctogram (yg) is a unit of mass/weight.
What is a microgram?
Microgram (ug) is a unit of mass/weight.
Is the yoctogram to microgram conversion exact?
Yes. Both yoctogram and microgram are defined by fixed standards rather than physical artifacts, so the factor of 1e-18 used above is exact to as many digits as you choose to display.