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To convert from Gram (g) to Microgram (mcg), use the following formula:
To convert from Gram (g) to Milligram (mg), use the following formula:
To convert from Gram (g) to Kilogram (kg), use the following formula:
To convert from Gram (g) to Metric Tonne (mt), use the following formula:
To convert from Gram (g) to Ounce (oz), use the following formula:
With is the ratio between the base units Pound (lb) and Gram (g).
To convert from Gram (g) to Pound (lb), use the following formula:
With is the ratio between the base units Pound (lb) and Gram (g).
To convert from Gram (g) to Stone (st), use the following formula:
With is the ratio between the base units Pound (lb) and Gram (g).
To convert from Gram (g) to Ton (t), use the following formula:
With is the ratio between the base units Pound (lb) and Gram (g).
A gram (g) is a base unit of mass in the metric system. The plural form is grams.
The gram was initially defined in 1795 by the French National Convention.
Its first definition was based on the mass of one cubic centimeter of pure water at the temperature of its maximum density, which is approximately 4 degrees Celsius (4 °C).
This practical, water-based definition was a revolutionary step toward a standardized and universal system of measurement, moving away from the inconsistent and often confusing units of time.
A gram is much smaller than an ounce, the standard unit of mass in the imperial and US customary systems.
One ounce equals approximately 28.35 grams, which is why grams are preferred for scientific work and for measuring small amounts, such as spices or medicine.
The metric system's decimal structure (for example, 1,000 grams in a kilogram) also makes calculations simpler than in the imperial system.
Although the gram was once tied to water, it's no longer linked to any physical object.
Since 2019, the kilogram — and therefore the gram — is defined by a fundamental constant, the Planck constant (h).
That shift makes the unit stable and reproducible in any properly equipped laboratory, without relying on the old International Prototype of the Kilogram.