In 1 micrograms there are 1.00000e-9 kilograms. Meanwhile in 1 kilograms there are 1,000,000,000 micrograms. Keep reading to learn more about each unit of measure and how they are calculated. Or just use the Kilograms to Micrograms calculator above to convert any number.
* Values rounded to 6 decimal places for readability
To convert micrograms (µg) to kilograms (kg), use the SI prefix rule: micro = 10⁻⁶. Since 1 kg = 1,000 g and 1 µg = 10⁻⁶ g, you can combine the steps into one simple conversion.
Conversion formula (µg to kg):
Key fact:
Quick examples:
Tip: When converting micrograms to kilograms, you move the decimal 9 places left.
To convert micrograms (mcg or µg) to kilograms (kg), divide by 1,000,000,000.
Formula:
kg = micrograms ÷ 1,000,000,000
1 microgram equals 0.000000001 kilograms.
1 mcg = 1 × 10^-9 kg
1 kilogram equals 1,000,000,000 micrograms.
1 kg = 1 × 10^9 mcg
The conversion factor from micrograms to kilograms is:
1 mcg = 0.000000001 kg
You can also say: multiply micrograms by 10^-9 to get kilograms.
100 micrograms equals 0.0000001 kilograms.
100 mcg ÷ 1,000,000,000 = 0.0000001 kg
1,000 micrograms equals 0.000001 kilograms.
1,000 mcg = 1 milligram = 0.000001 kg
1,000,000 micrograms equals 0.001 kilograms.
That’s also 1 gram, since 1,000,000 mcg = 1 g.
To convert kilograms to micrograms, multiply by 1,000,000,000.
Formula:
micrograms = kilograms × 1,000,000,000
A microgram is tiny compared to a kilogram. A kilogram is one billion micrograms, so the kilogram value becomes a very small decimal when you start with micrograms.
Yes. mcg and µg both mean micrograms. Some labels use mcg because it’s easier to type and read.
Use the factor 1,000,000,000 and keep track of the decimal place. A quick check helps: the kilogram result should always be much smaller than the microgram number.
Micrograms often show up in nutrition and medicine, like vitamin amounts. Kilograms are used for body weight, shipping, and bulk materials. Converting helps when small-dose data needs to match large-scale units.
Yes. Here’s the size order from smallest to largest:
Remember: micro to kilo is 9 steps in powers of ten.
mcg to kg = divide by 10^9
kg to mcg = multiply by 10^9
The Calculate Box tool to convert micrograms to kilograms uses the open source script Convert.js to convert units of measurement. To use this tool, simply type a micrograms value in the box and have it instantly converted to kilograms.