Microgram [mcg] to Kilogram [kg] Converter

Quick Reference

1 Microgram (mcg) = 1.0000e-9 Kilogram (kg)

1 Kilogram (kg) = 1000000000 Microgram (mcg)

How to Convert Microgram to Kilogram

1 mcg = 9.999999999999999e-10 kg
1 kg = 1000000000 mcg

To convert Microgram to Kilogram, divide the value by 1000000000 (equivalently, multiply by 1.0000e-9). To convert Kilogram back to Microgram, multiply by 1000000000.

Example: convert 10 mcg to kg:
10 mcg = 10 x 9.999999999999999e-10 = 9.999999999999999e-9 kg

↔ Convert Kilogram to Microgram

Microgram

Definition: A microgram (mcg or µg) is a unit of mass in the metric system, equal to one millionth (10⁻⁶) of a gram.

History/origin: The microgram is derived from the gram, which was defined during the French Revolution as the mass of one cubic centimeter of water at the temperature of melting ice. The prefix 'micro-' indicates one millionth.

Current use: Micrograms are commonly used to measure very small amounts of substances, such as vitamins, medications, and pollutants. They are frequently used in pharmaceuticals, biochemistry, and environmental science.

Kilogram

Definition: A kilogram (symbol: kg) is the base unit of mass in the International System of Units (SI). It is equal to 1000 grams.

History/origin: The kilogram was originally defined as the mass of a specific artifact called the International Prototype Kilogram (IPK), a platinum-iridium cylinder. In 2019, the definition was redefined based on fundamental physical constants.

Current use: Kilograms are used for measuring the mass of larger objects, such as people, packages, and vehicles. It's a standard unit in commerce, engineering, and science.

Microgram to Kilogram Conversion Table

Microgram [mcg]	Kilogram [kg]
1 mcg	9.999999999999999e-10 kg
2 mcg	1.9999999999999997e-9 kg
5 mcg	4.999999999999999e-9 kg
10 mcg	9.999999999999999e-9 kg
20 mcg	1.9999999999999997e-8 kg
50 mcg	5e-8 kg
100 mcg	1e-7 kg
200 mcg	2e-7 kg
500 mcg	5e-7 kg
1000 mcg	0.000001 kg

Common pairs of Mass

Microgram

Microgram to Milligram Microgram to Gram Microgram to Kilogram Microgram to Metric Tonne Microgram to Ounce

Milligram

Milligram to Microgram Milligram to Gram Milligram to Kilogram Milligram to Metric Tonne Milligram to Ounce

Gram

Gram to Microgram Gram to Milligram Gram to Kilogram Gram to Metric Tonne Gram to Ounce

Kilogram

Kilogram to Microgram Kilogram to Milligram Kilogram to Gram Kilogram to Metric Tonne Kilogram to Ounce

Metric Tonne

Metric Tonne to Microgram Metric Tonne to Milligram Metric Tonne to Gram Metric Tonne to Kilogram Metric Tonne to Ounce

Ounce

Ounce to Microgram Ounce to Milligram Ounce to Gram Ounce to Kilogram Ounce to Metric Tonne

Pound

Pound to Microgram Pound to Milligram Pound to Gram Pound to Kilogram Pound to Metric Tonne

Ton

Ton to Microgram Ton to Milligram Ton to Gram Ton to Kilogram Ton to Metric Tonne

Microgram [mcg] to Kilogram [kg] Converter

To convert Microgram to Kilogram, enter your value in the mcg field above and the result in kg will appear instantly. You can also use the conversion factor shown in the table on this page to calculate manually. The formula is always the same: multiply your mcg value by the fixed conversion ratio to get the equivalent in kg.

Our Microgram to Kilogram converter uses standardized conversion factors defined by international scientific and metrological organizations. All calculations are performed with full floating-point precision. You can also choose how many decimal places to display in the result, so you get exactly the level of detail you need.

Yes, absolutely. Simply swap the source and destination units in the converter — select kg as your input unit and mcg as your output unit. The same precision and standardized conversion factor applies in both directions.

Converting between Microgram and Kilogram comes up regularly in engineering, scientific research, construction, and everyday tasks that involve measurements from different unit systems. Our converter eliminates the risk of manual calculation errors and saves time whenever you need to switch between these two units.

Yes, the Microgram to Kilogram converter is completely free. No account or registration is required, and there are no usage limits. It works on any device — smartphones, tablets, and desktop computers — directly in your browser.

Microgram and Kilogram are both units used to measure the same physical quantity, but they belong to different measurement systems or represent different scales. The mathematical relationship between them is fixed and constant, which is what makes accurate conversion possible. Scroll up to see the exact conversion factor, formula, and a reference table for common values.

Microgram [mcg] to Kilogram [kg] Converter

Quick Reference

1 Microgram (mcg) = 1.0000e-9 Kilogram (kg)

1 Kilogram (kg) = 1000000000 Microgram (mcg)

How to Convert Microgram to Kilogram

1 mcg = 9.999999999999999e-10 kg
1 kg = 1000000000 mcg

To convert Microgram to Kilogram, divide the value by 1000000000 (equivalently, multiply by 1.0000e-9). To convert Kilogram back to Microgram, multiply by 1000000000.

Example: convert 10 mcg to kg:
10 mcg = 10 x 9.999999999999999e-10 = 9.999999999999999e-9 kg

↔ Convert Kilogram to Microgram

Microgram

Definition: A microgram (mcg or µg) is a unit of mass in the metric system, equal to one millionth (10⁻⁶) of a gram.

Kilogram

Definition: A kilogram (symbol: kg) is the base unit of mass in the International System of Units (SI). It is equal to 1000 grams.

Current use: Kilograms are used for measuring the mass of larger objects, such as people, packages, and vehicles. It's a standard unit in commerce, engineering, and science.

Microgram to Kilogram Conversion Table

Microgram [mcg]	Kilogram [kg]
1 mcg	9.999999999999999e-10 kg
2 mcg	1.9999999999999997e-9 kg
5 mcg	4.999999999999999e-9 kg
10 mcg	9.999999999999999e-9 kg
20 mcg	1.9999999999999997e-8 kg
50 mcg	5e-8 kg
100 mcg	1e-7 kg
200 mcg	2e-7 kg
500 mcg	5e-7 kg
1000 mcg	0.000001 kg

Common pairs of Mass

Microgram

Microgram to Milligram Microgram to Gram Microgram to Kilogram Microgram to Metric Tonne Microgram to Ounce

Milligram

Milligram to Microgram Milligram to Gram Milligram to Kilogram Milligram to Metric Tonne Milligram to Ounce

Gram

Gram to Microgram Gram to Milligram Gram to Kilogram Gram to Metric Tonne Gram to Ounce

Kilogram

Kilogram to Microgram Kilogram to Milligram Kilogram to Gram Kilogram to Metric Tonne Kilogram to Ounce

Metric Tonne

Metric Tonne to Microgram Metric Tonne to Milligram Metric Tonne to Gram Metric Tonne to Kilogram Metric Tonne to Ounce

Ounce

Ounce to Microgram Ounce to Milligram Ounce to Gram Ounce to Kilogram Ounce to Metric Tonne

Pound

Pound to Microgram Pound to Milligram Pound to Gram Pound to Kilogram Pound to Metric Tonne

Ton

Ton to Microgram Ton to Milligram Ton to Gram Ton to Kilogram Ton to Metric Tonne