Milligrams to Grams Converter
Convert milligrams to grams. The formula used here is 1 milligram = 0.001 grams. The formula is g = mg × 0.001; 1 mg is 0.001 g.
A metric mass unit equal to one thousandth of a gram.
A metric mass unit used for food, lab, and everyday weights.
Start with your value in milligrams, then apply the formula below. It stays visible so you can catch rounding mistakes instead of just copying the output.
For freight, food, medicine, and fitness work, keep enough decimal places to match the measuring device and round the displayed value only after the conversion.
Most weight conversions here use exact defined relationships between metric and avoirdupois units, so the main accuracy limit is the input measurement itself. This page displays converted values with up to 8 decimal places by default.
| Milligrams | Grams |
|---|---|
| 100 mg | 0.1 g |
| 500 mg | 0.5 g |
| 1,000 mg | 1 g |
| 5,000 mg | 5 g |
| 10,000 mg | 10 g |
Useful for checking parcel and freight weights. Use the same formula with your exact input if the measurement needs to be documented.
Useful for scaling recipes or reading nutrition labels. Use the same formula with your exact input if the measurement needs to be documented.
Useful for fitness, health, and lab measurements. Use the same formula with your exact input if the measurement needs to be documented.
How do I convert milligrams to grams?
Enter the value in milligrams and apply g = mg × 0.001. Round the grams result after the conversion, not before.
What is 1 milligram in grams?
1 mg equals 0.001 g with the current rounding setting. Keep more decimal places when the result feeds another calculation.
What is 100 mg in g?
100 mg is 0.1 g. It appears in the lookup table so you can compare it with nearby amounts.
Can I convert grams back to milligrams?
Yes. Use the reverse Grams to Milligrams converter if you need to go the other direction.
How accurate is this milligrams to grams conversion?
The calculator runs the formula in your browser and rounds results to 8 decimal places by default. Most weight conversions here use exact defined relationships between metric and avoirdupois units, so the main accuracy limit is the input measurement itself.