Microgram to Kilogram Converter
Convert Microgram (µg) to Kilogram (kg) instantly. 1 µg = 1.000000e-9 kg.
Mass Converter
26 units available
1 µg = 1.000000e-9 kg
Formula:
kg = µg × 1.000000e-9With your value: 1 µg = 1.000000e-9 kg
How big is that?
Everyday references on a logarithmic scale, all expressed in microgram so you can sanity-check the result.
Other Microgram to Kilogram conversions
Microgram to Kilogram Conversion Table
| Microgram (µg) | Kilogram (kg) |
|---|---|
| 0.5 | 5.000000e-10 |
| 1 | 1.000000e-9 |
| 2 | 2.000000e-9 |
| 5 | 5.000000e-9 |
| 10 | 1.000000e-8 |
| 15 | 1.500000e-8 |
| 20 | 2.000000e-8 |
| 25 | 2.500000e-8 |
| 50 | 5.000000e-8 |
| 100 | 1.000000e-7 |
| 250 | 2.500000e-7 |
| 500 | 5.000000e-7 |
| 1000 | 1.000000e-6 |
Kilogram to Microgram Conversion Table
| Kilogram (kg) | Microgram (µg) |
|---|---|
| 0.5 | 500,000,000 |
| 1 | 1,000,000,000 |
| 2 | 2,000,000,000 |
| 5 | 5,000,000,000 |
| 10 | 10,000,000,000 |
| 15 | 15,000,000,000 |
| 20 | 20,000,000,000 |
| 25 | 25,000,000,000 |
| 50 | 50,000,000,000 |
| 100 | 100,000,000,000 |
| 250 | 250,000,000,000 |
| 500 | 500,000,000,000 |
| 1000 | 1.000000e+12 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Microgram (µg)
Mass
Traceable to the kilogram, defined by fixing the Planck constant at 6.626 070 15 × 10⁻³⁴ J·s. Avoirdupois masses derive from the 1959 international pound (0.453 592 37 kg exactly).
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
Kilogram (kg)
Mass
The kilogram is defined by taking the Planck constant to be exactly 6.626 070 15 × 10⁻³⁴ J·s.
Source: BIPM, The International System of Units (SI), 9th edition, 2019 (updated 2024)
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert Microgram to Kilogram
To convert from Microgram (µg) to Kilogram (kg), multiply the value by 1.000000e-9.
Formula: kg = µg × 1.000000e-9
Reverse: µg = kg × 1.000000e+9
Step-by-Step Example
- Start with your value in Microgram. For example: 5 µg
- Multiply by the conversion factor: 5 x 1.000000e-9
- The result is: 5.000000e-9 kg
About Microgram
The microgram (µg) equals one millionth of a gram. Vitamins, hormones and trace contaminants are dosed at this scale.
Fun Fact: Clinical writing spells out "microgram" rather than using µg to avoid dosing errors.
Common uses: pharmacology, vitamin dosing, toxicology.
About Kilogram
The kilogram is the base unit of mass in the SI system. Since 2019, it is defined by the Planck constant rather than a physical artifact.
Fun Fact: Until 2019, the kilogram was defined by a platinum-iridium cylinder kept in Paris, called "Le Grand K."
Common uses: body weight, cooking, shipping.
Frequently Asked Questions
How many Kilogram are in 1 Microgram?
There are exactly 1.000000e-9 Kilogram in 1 Microgram. This means the conversion factor from Microgram to Kilogram is 1.000000e-9.
What is the formula to convert Microgram to Kilogram?
The formula to convert Microgram to Kilogram is: kg = µg × 1.000000e-9. For example, to convert 10 Microgram to Kilogram, you would multiply 10 by 1.000000e-9.
What is a Microgram?
The microgram (µg) equals one millionth of a gram. Vitamins, hormones and trace contaminants are dosed at this scale.
What is a Kilogram?
The kilogram is the base unit of mass in the SI system. Since 2019, it is defined by the Planck constant rather than a physical artifact.
What are the common uses of Microgram?
The Microgram is commonly used in pharmacology, vitamin dosing, toxicology.
Related Mass Conversions
Cite this page
UnitConvertLab. (2026). Microgram to Kilogram converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/microgram-to-kilogram