The gram is one-thousandth of a kilogram, a standard metric unit of mass.
Gram to Milligram
Convert Gram to Milligram instantly. Free online cooking unit converter with exact formula, conversion table and FAQ.
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Convert cooking volume and mass units used in recipes and nutrition workflows.
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Some unit families need one extra value for a physically accurate result.
The milligram is one-thousandth of a gram, used for very small ingredient amounts such as spices or additives.
mg = g × 1000
Results update instantly for Gram to Milligram conversions.
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Formula
mg = g × 1000
g = mg × 0.001
Conversion table
| 1 g | 1000 mg |
| 5 g | 5000 mg |
| 10 g | 10000 mg |
| 20 g | 20000 mg |
| 50 g | 50000 mg |
| 100 g | 100000 mg |
| 500 g | 500000 mg |
| 1000 g | 1000000 mg |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the gram (g). The gram is one-thousandth of a kilogram, a standard metric unit of mass.
What is the destination unit in this conversion?
The destination unit is the milligram (mg). The milligram is one-thousandth of a gram, used for very small ingredient amounts such as spices or additives.
How do I convert gram to milligram?
Multiply the gram value by 1000. For example, 10 g × 1000 = 10000 mg.
Is the gram to milligram conversion exact?
Yes. This conversion uses a fixed factor defined for cooking measurement standards, so results are consistent every time.
Where is this conversion commonly used?
It's used when following recipes, adjusting ingredient quantities, or converting between US customary and metric cooking measurements.
Can I convert milligram back to gram?
Yes. Multiply the milligram value by 0.001 to get gram.
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About this conversion
This page converts gram (g) to milligram (mg) within the cooking converter.
The gram is one-thousandth of a kilogram, a standard metric unit of mass. The milligram is one-thousandth of a gram, used for very small ingredient amounts such as spices or additives.
The formula is mg = g × 1000, based on each unit's fixed relationship to the cooking converter's reference units.
Results are consistent because the conversion relies on a fixed numerical ratio rather than an estimate.
Use the calculator above for instant results, or the table below for common gram values already converted to milligram.