Gram to Milligram Converter
Free Weight Converter, Convert Kilograms, Pounds, Ounces, Stone & Grams Instantly
1Gram=1000Milligram
1 Milligram = 0.001 Gram
Gram
- Symbol
- g
- System
- Metric/Imperial
- Dimension
- Various
Milligram
- Symbol
- mg
- System
- Metric/Imperial
- Dimension
- Various
Quick Reference Table
| Gram | Milligram | Milligram | Gram |
|---|---|---|---|
| 1 | 1000 | 1 | 0.001 |
| 2 | 2000 | 2 | 0.002 |
| 3 | 3000 | 3 | 0.003 |
| 5 | 5000 | 5 | 0.005 |
| 10 | 10000 | 10 | 0.01 |
| 25 | 25000 | 25 | 0.025 |
| 50 | 50000 | 50 | 0.05 |
| 100 | 100000 | 100 | 0.1 |
| 500 | 500000 | 500 | 0.5 |
| 1000 | 1000000 | 1000 | 1 |
Conversion Formula
Milligram = Gram × 1000
Gram = Milligram × 0.001
Factors are from BIPM SI brochure and NIST SP 811, stored unrounded and computed via a base unit. Reverse factor is 1 ÷ 1000.
How to convert Gram to Milligram
Multiply the value in gram by 1000 to get milligram. For example, 5 Gram = 5000 Milligram. All results in the weight & mass converter update instantly as you type, so you can see every unit at once without manual math.
Common mistakes
Do not round the factor to 1000 too early — keep full precision until the final display. For weight & mass, always verify critical calculations (medicine, engineering) with a second source.
FAQ
- How many Milligram in 1 Gram?
- 1 Gram = 1000 Milligram.
- How many Gram in 1 Milligram?
- 1 Milligram = 0.001 Gram.
- What is the source?
- BIPM/NIST via OmniConverter base-unit engine. Source table and formula above are exact.
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