The unified atomic mass unit is used in atomic physics.
Atomic mass units to Kilograms
Convert atomic mass units (u) to kilograms (kg) instantly. Free online weight converter with formulas, tables and examples.
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Kilogram is 1000 gram units.
kg = u × 1.6605390666e-27
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Formula
kg = u × 1.6605390666e-27
u = kg ÷ 1.6605390666e-27
Conversion table
| 1 u | 1.660539e-27 kg |
| 5 u | 8.302695e-27 kg |
| 10 u | 1.660539e-26 kg |
| 20 u | 3.321078e-26 kg |
| 50 u | 8.302695e-26 kg |
| 100 u | 1.660539e-25 kg |
| 500 u | 8.302695e-25 kg |
| 1000 u | 1.660539e-24 kg |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the atomic mass unit (u). The unified atomic mass unit is used in atomic physics.
What is the destination unit in this conversion?
The destination unit is the kilogram (kg). Kilogram is 1000 gram units.
How do I convert atomic mass units to kilograms?
Multiply the number of atomic mass units by 1.6605390666e-27 to get the equivalent value in kilograms. For example, 5 u × 1.6605390666e-27 = 8.302695e-27 kg.
Is the atomic mass unit to kilogram conversion exact?
Yes. This converter uses a fixed factor of 1.6605390666e-27, so results are precise and consistent every time you use it.
Where is this conversion commonly used?
It's used in everyday measurement, shipping and logistics, scientific and industrial work, and any context where you need to switch between atomic mass unit and kilogram values.
Can I convert kilograms back to atomic mass units?
Yes. Multiply the kilograms value by 6.02214076208e+26, or divide it by 1.6605390666e-27, to convert back to atomic mass units.
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About this conversion
This page converts atomic mass units (u) into kilograms (kg) using the Universal Converter's mass conversion engine.
Atomic mass unit-to-Kilogram conversions are useful for everyday calculations, scientific work, shipping, and any task that mixes different weight or mass units.
The formula is kg = u × 1.6605390666e-27, based on the standard definitions of atomic mass unit and kilogram.
Because the conversion factor is fixed, results stay consistent and repeatable no matter how many times you calculate them.
Atomic mass unit: The unified atomic mass unit is used in atomic physics. Kilogram: Kilogram is 1000 gram units.