Microgram to Kilogram Converter
Weight · unit-converter
Convert Microgram to Kilogram with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use gram-based factors (international avoirdupois pound and metric definitions). The full Weight Converter also includes carat, grain, and US/UK hundredweight.
Calculator
From: Microgram (ug)
To: Kilogram (kg)
About Microgram
The microgram is one millionth of a gram. It appears in pharmacology and trace analysis.
About Kilogram
The kilogram is the SI base unit of mass (defined via fundamental constants). Everyday metric weights and science use kilograms and grams.
How to convert micrograms to kilograms
1 microgram is equal to 1.00000000e-9 kilogram:
1 ug = (0.000001 g ÷ 1000 g) kg = 1.00000000e-9 kg
Each microgram is defined as 0.000001 g and each kilogram as 1000 g, so one ug equals 0.000001 ÷ 1000 kg = 1.00000000e-9 kg.
Let w(ug) be the numeric value of the same mass measured in Microgram (ug), and w(kg) the value in Kilogram (kg). Then:
w(kg) = w(ug) × (0.000001 / 1000)
Equivalently, divide by how many ug fit into one kg (grams per kg divided by grams per ug):
w(kg) = w(ug) ÷ 1.00000000e+9
Or: kilogram = microgram ÷ 1.00000000e+9
Examples
Example #1: Convert 20 ug to kilogram
20 ug = 20 ug × (0.000001/1000) kg = 0.00000002 kg
20 ug = 20 ug ÷ 1.00000000e+9 = 0.00000002 kg
Example #2: Convert 50 ug to kilogram
50 ug = 50 ug × (0.000001/1000) kg = 0.00000005 kg
50 ug = 50 ug ÷ 1.00000000e+9 = 0.00000005 kg
Summary
To convert Microgram to Kilogram, multiply the value in ug by the ratio of grams per ug divided by grams per kg. Equivalently: value_kg = value_ug × (0.000001 / 1000). Numerically, 1 ug equals 9.999999999999999e-10 kg.
Relationship context
Both units are metric (SI) and tied to the gram via the kilogram. Conversions use exact ratios from their gram definitions. The factor from Microgram to Kilogram is 1.000000e-9 (1 ug = 9.999999999999999e-10 kg).
Conversion tables
| Microgram (ug) | Kilogram (kg) |
|---|---|
| 0.1 | 0.0000000001 |
| 1 | 0.000000001 |
| 2 | 0.000000002 |
| 3 | 0.000000003 |
| 4 | 0.000000004 |
| 5 | 0.000000005 |
| 6 | 0.000000006 |
| 7 | 0.000000007 |
| 8 | 0.000000008 |
| 9 | 0.000000009 |
| Microgram (ug) | Kilogram (kg) |
|---|---|
| 10 | 0.00000001 |
| 20 | 0.00000002 |
| 30 | 0.00000003 |
| 40 | 0.00000004 |
| 50 | 0.00000005 |
| 60 | 0.00000006 |
| 70 | 0.00000007 |
| 80 | 0.00000008 |
| 90 | 0.00000009 |
| 100 | 0.0000001 |