Gram [g] to Microgram [mcg] Converter

Quick Reference

1 Gram (g) = 1000000 Microgram (mcg)

1 Microgram (mcg) = 1.0000e-6 Gram (g)

How to Convert Gram to Microgram

1 g = 1000000 mcg
1 mcg = 0.000001 g

To convert Gram to Microgram, multiply the value by 1000000. To convert Microgram back to Gram, divide by 1000000.

Example: convert 10 g to mcg:
10 g = 10 x 1000000 = 10000000 mcg

↔ Convert Microgram to Gram

Gram

Definition: A gram (symbol: g) is a unit of mass in the metric system. It was originally defined as the mass of one cubic centimeter of pure water at the temperature of maximum density.

History/origin: The gram is the base unit of mass in the metric system, which was established in France in the late 18th century. It was intended to be a universal and rational system of measurement.

Current use: Grams are widely used for measuring the mass of food items, ingredients, and small objects. It's a standard unit in cooking, chemistry, and various industries.

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.

Gram to Microgram Conversion Table

Gram [g]	Microgram [mcg]
1 g	1000000 mcg
2 g	2000000 mcg
5 g	5000000 mcg
10 g	10000000 mcg
20 g	20000000 mcg
50 g	50000000 mcg
100 g	100000000 mcg
200 g	200000000 mcg
500 g	500000000 mcg
1000 g	1000000000 mcg

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

Gram [g] to Microgram [mcg] Converter

To convert Gram to Microgram, enter your value in the g field above and the result in mcg 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 g value by the fixed conversion ratio to get the equivalent in mcg.

Our Gram to Microgram 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 mcg as your input unit and g as your output unit. The same precision and standardized conversion factor applies in both directions.

Converting between Gram and Microgram 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 Gram to Microgram 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.

Gram and Microgram 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.

Gram [g] to Microgram [mcg] Converter

Quick Reference

1 Gram (g) = 1000000 Microgram (mcg)

1 Microgram (mcg) = 1.0000e-6 Gram (g)

How to Convert Gram to Microgram

1 g = 1000000 mcg
1 mcg = 0.000001 g

To convert Gram to Microgram, multiply the value by 1000000. To convert Microgram back to Gram, divide by 1000000.

Example: convert 10 g to mcg:
10 g = 10 x 1000000 = 10000000 mcg

↔ Convert Microgram to Gram

Gram

Definition: A gram (symbol: g) is a unit of mass in the metric system. It was originally defined as the mass of one cubic centimeter of pure water at the temperature of maximum density.

History/origin: The gram is the base unit of mass in the metric system, which was established in France in the late 18th century. It was intended to be a universal and rational system of measurement.

Current use: Grams are widely used for measuring the mass of food items, ingredients, and small objects. It's a standard unit in cooking, chemistry, and various industries.

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.

Gram to Microgram Conversion Table

Gram [g]	Microgram [mcg]
1 g	1000000 mcg
2 g	2000000 mcg
5 g	5000000 mcg
10 g	10000000 mcg
20 g	20000000 mcg
50 g	50000000 mcg
100 g	100000000 mcg
200 g	200000000 mcg
500 g	500000000 mcg
1000 g	1000000000 mcg

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