1 gram is 1,000 milligrams. Below is the full chart, with a section of its own for each amount worth having to hand.
Grams to milligrams: full chart
| Grams | Milligrams |
|---|---|
| 1/4 g | 250 mg |
| 1/2 g | 500 mg |
| 1 g | 1,000 mg |
| 2 g | 2,000 mg |
| 3 g | 3,000 mg |
| 4 g | 4,000 mg |
| 6 g | 6,000 mg |
| 8 g | 8,000 mg |
| 12 g | 12,000 mg |
| 16 g | 16,000 mg |
1 gram to milligrams
1 gram is 1,000 milligrams. Take the 1 gram figure of 1,000 milligrams and multiply by 1 to get there.
2 grams to milligrams
2 grams is 2,000 milligrams. 2 of these makes 2,000, counting from the 1 gram figure of 1,000 milligrams.
3 grams to milligrams
3 grams is 3,000 milligrams. Take the 1 gram figure of 1,000 milligrams and multiply by 3 to get there.
4 grams to milligrams
4 grams is 4,000 milligrams. 4 of these makes 4,000, counting from the 1 gram figure of 1,000 milligrams.
6 grams to milligrams
6 grams is 6,000 milligrams. Half this amount, 3 grams, comes to 3,000; double it and you are at 12,000.
8 grams to milligrams
8 grams is 8,000 milligrams. Working from 1 gram is 1,000 milligrams, 8 scales to 8,000.
12 grams to milligrams
12 grams is 12,000 milligrams. Take the 1 gram figure of 1,000 milligrams and multiply by 12 to get there.
16 grams to milligrams
16 grams is 16,000 milligrams. Working from 1 gram is 1,000 milligrams, 16 scales to 16,000.
Where the number comes from
This one is fixed by definition rather than measured, so it carries no rounding and no dependence on what is being weighed. One gram is exactly 1,000 milligrams, and every row above is that one ratio multiplied out.
The metric units are defined against each other in powers of ten, which is why none of these rows needs a repeating decimal.
How to read the chart
Nothing in the table depends on your kitchen. The same rows hold at sea level and at altitude, in a cold room and a hot one.
Does anything change this
Nothing about the ingredient. The only way to get a different answer is to be working in a different system than you think you are.
Going the other way: milligrams to grams
| Milligrams | Grams |
|---|---|
| 25 mg | 0.025 g |
| 50 mg | 0.05 g |
| 100 mg | 0.1 g |
Reading it backwards works on the same figure, and these rows show which way it moves.
Measuring it properly
A kitchen scale settles this outright. Put the empty container on, press tare so it reads zero, then add until you reach the figure.
How much rounding this will take
A convenient number costs little on a single quantity and adds up quickly once a recipe is doubled or tripled. Round late, not early.
The commonest slip
Trusting a scale below its useful floor. Under a few grams most kitchen scales round to the nearest step and show a tidy number that was never measured.
When you will need this
Older cookbooks and handwritten family recipes rarely state which system they meant. 1 gram is 1,000 milligrams is the assumption that makes most of them work.
Half, double and triple
Half of 1 gram is 500 milligrams. Double it and you have 2,000 milligrams; triple it and you are at 3,000 milligrams. A batch cut to a quarter needs 250 milligrams.
The relationship is a straight multiple all the way through, so any factor scales the same way.
How much precision this needs
This pair gives 1,000 for 1 gram with nothing after the decimal point. That is unusual enough to be worth noticing, and it makes scaling trivial.
Other ways this gets asked
People look for this in a few different forms; all of them land on the same figures:
- Grams to Milligrams: Full Conversion Chart?
Related conversions
For every kitchen figure in one place, see the full conversion chart.
