Convert between grams (g) and micrograms (μg) for scientific, medical, and precise weight measurements.
Select conversion direction:
Grams to Micrograms Conversion (Metric System):
1 Gram (g) = 1,000,000 Micrograms (μg)
μg = g × 1,000,000 | g = μg ÷ 1,000,000 (e.g., 0.5 g = 500,000 μg; 2,500,000 μg = 2.5 g)
Accepts decimals (e.g., 0.001 g = 1000 μg)
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Quick conversions (common values) - click to auto-fill:
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Key differences between grams (g) and micrograms (μg) — and their critical roles in science, medicine, and precision measurements.
| Unit | Definition | 1 Unit = | Common Uses |
|---|---|---|---|
| Gram (g) | Base unit of mass in metric system (1/1000 of a kilogram) | 1,000,000 μg 1000 milligrams (mg) |
Food ingredients, medication pills, small objects |
| Microgram (μg) | One millionth of a gram (10⁻⁶ g) | 0.000001 g 0.001 milligrams (mg) |
Lab reagents, trace elements, drug dosages (e.g., vitamins) |
*Note: "Micro-" prefix = 10⁻⁶ (one millionth) in the metric system.
| Grams (g) | Micrograms (μg) | Equivalent | Real-World Example |
|---|---|---|---|
| 0.000001 g | 1 μg | 0.001 mg | Single grain of table salt |
| 0.001 g | 1000 μg | 1 mg | Typical dose of a vitamin B12 pill |
| 0.01 g | 10,000 μg | 10 mg | Amount of caffeine in a sip of coffee |
| 0.5 g | 500,000 μg | 500 mg | Standard aspirin tablet |
| 1 g | 1,000,000 μg | 1000 mg | A pinch of sugar |
Common conversions for lab work, medicine, and precision measurements (1 g = 1,000,000 μg)
| Grams (g) | = | Micrograms (μg) |
|---|---|---|
| 0.0001 g | = | 100 μg |
| 0.001 g | = | 1,000 μg |
| 0.01 g | = | 10,000 μg |
| 0.1 g | = | 100,000 μg |
| 0.5 g | = | 500,000 μg |
| 1 g | = | 1,000,000 μg |
| Micrograms (μg) | = | Grams (g) |
|---|---|---|
| 100 μg | = | 0.0001 g |
| 1,000 μg | = | 0.001 g |
| 10,000 μg | = | 0.01 g |
| 100,000 μg | = | 0.1 g |
| 500,000 μg | = | 0.5 g |
| 1,000,000 μg | = | 1 g |
Common questions about grams to micrograms conversions and metric mass units
The metric system uses decimal prefixes to denote multiples of base units:
Both represent micrograms, but "μg" is the standard symbol:
Micrograms are critical for extremely small measurements across fields:
Milligrams (mg) are a middle unit between grams and micrograms:
1 milligram (mg) = 1000 micrograms (μg)
1 gram (g) = 1000 milligrams (mg) = 1,000,000 micrograms (μg)
Examples for clarity:
Microgram-level measurements are often critical to safety and accuracy:
This is why scientific instruments (e.g., analytical balances) are calibrated to measure down to 0.1 μg.
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Convert grams (g) to micrograms (μg) instantly—1 gram = 1,000,000 micrograms. For science, medicine, and precise measurements.
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