Converting between grams and milligrams helps you work across different scales of measurement, whether you are dealing with laboratory samples, grocery shopping, or industrial shipping.
18 g = 18000 mg
18 (eighteen) gram(s) is equal to 18000 (eighteen thousand) milligram(s)
What is gram?
The gram (g) is a metric unit of mass equal to one thousandth of a kilogram. It is commonly used for measuring food ingredients, medicines, and small quantities. One gram equals approximately 0.035 ounces.
What is milligram?
The milligram (mg) is a metric unit equal to one thousandth of a gram or one millionth of a kilogram. It is commonly used in pharmacology for drug dosages and in nutrition for measuring vitamins and minerals.
How to convert g to mg
To convert Gram to Milligram, multiply the value by 1000.
18 g × 1000 = 18000 mg
Common Conversions
| g | mg (Milligram) | Description |
|---|---|---|
| 1 g | 1000 mg | 1 Gram(s) = 1000 Milligram(s) |
| 2 g | 2000 mg | 2 Gram(s) = 2000 Milligram(s) |
| 5 g | 5000 mg | 5 Gram(s) = 5000 Milligram(s) |
| 10 g | 10000 mg | 10 Gram(s) = 10000 Milligram(s) |
| 25 g | 25000 mg | 25 Gram(s) = 25000 Milligram(s) |
| 50 g | 50000 mg | 50 Gram(s) = 50000 Milligram(s) |
| 100 g | 100000 mg | 100 Gram(s) = 100000 Milligram(s) |
| 250 g | 250000 mg | 250 Gram(s) = 250000 Milligram(s) |
| 500 g | 500000 mg | 500 Gram(s) = 500000 Milligram(s) |
| 1000 g | 1000000 mg | 1000 Gram(s) = 1000000 Milligram(s) |
| 2500 g | 2500000 mg | 2500 Gram(s) = 2500000 Milligram(s) |
| 5000 g | 5000000 mg | 5000 Gram(s) = 5000000 Milligram(s) |
| 10000 g | 10000000 mg | 10000 Gram(s) = 10000000 Milligram(s) |
Convert Gram to other units
| g | Unit | Description |
|---|---|---|
| 18 g | 0.018 kg | Kilogram |
| 18 g | 0.000018 t | Tonne |
| 18 g | 18000 mg | Milligram |
| 18 g | 18000000 µg | Microgram |
| 18 g | 0.039683 lb | Pound |
| 18 g | 0.634931 oz | Ounce |
| 18 g | 0.002835 st | Stone |