Convert weight and mass units — kilograms, pounds, ounces, grams, tons, stones.
| Unit | Name | Value |
|---|---|---|
| kg | Kilogram | 0.000001 |
| g | Gram | 0.001 |
| t | Metric Ton | 1.000000e-9 |
| lb | Pound | 0.0000022046244 |
| oz | Ounce | 0.000035273991 |
| st | Stone | 1.5747312e-7 |
The Milligram (mg) and the Ounce (oz) are both units of weight & mass. Converting between them is straightforward using the formula above.
Formula: 1 mg = 0.00003527399 oz
This converter uses internationally recognized conversion factors. All calculations are performed client-side in your browser — no data is sent to any server.
| Milligram (mg) | Ounce (oz) | Real-world context |
|---|---|---|
| 1 mg | 3.5274e-05 oz | |
| 1000 mg | 0.03527399 oz | 1 gram |
| 1,000,000 mg | 35.2739907 oz | |
| 1.0000e+09 mg | 35273.9907 oz | |
| 1.0000e+12 mg | 35,273,991 oz |
1 milligram (mg) equals exactly 3.5274e-05 ounces (oz). Use the formula: mg × 3.5274e-05 = oz.
To convert milligrams to ounces, multiply your value in milligrams by 3.5274e-05. For example, 5 mg × 3.5274e-05 = 0.00017637 oz.
100 milligrams = 0.0035274 ounces. Calculation: 100 × 3.5274e-05 = 0.0035274.
To convert ounces back to milligrams, divide by 3.5274e-05 (or multiply by 28349.5). Example: 10 oz ÷ 3.5274e-05 = 283495 mg.
Yes. This converter uses the internationally recognised exact conversion factor: 1 mg = 3.5274e-05 oz. All calculations are performed in your browser with no rounding until display.
10 milligrams = 0.00035274 ounces. Simply multiply by 3.5274e-05.
Converting milligrams to ounces is commonly needed for medical dosing, laboratory measurements, pharmaceutical calculations, and quality control testing where one system uses mg and another uses oz.
The milligram (mg) is a unit of mass equal to one-thousandth of a gram (0.001 g) or one-millionth of a kilogram (10⁻⁶ kg). It is the standard unit for drug dosing in medicine and pharmacology, where precise small quantities are critical for safety and efficacy. The prefix "milli-" comes from Latin mille meaning one thousand.
The avoirdupois ounce (oz) equals exactly 28.349523125 grams or 1/16 of an avoirdupois pound. It is widely used in the US and UK for food portions, product packaging, and everyday measurements. Note that the troy ounce (31.1035 g), used for precious metals like gold and silver, is a different and heavier unit than the avoirdupois ounce.
Established as a derived unit when the metric system was formalised in the late 18th century. The milligram rose to critical importance with the growth of pharmacology in the 19th and 20th centuries, as chemists isolated active compounds and found that tiny quantities produced strong therapeutic — or toxic — effects. Modern pharmacopoeias worldwide specify drug doses in milligrams.
Interesting fact: A single grain of table salt weighs about 58 mg. One standard 325 mg aspirin tablet means that 1,000 tablets weigh only 325 grams — less than a can of soft drink.
The word "ounce" derives from Latin uncia (a twelfth), originally 1/12 of the Roman pound. The avoirdupois ounce developed in medieval England specifically for the wool trade, creating a 16-ounce pound distinct from the Troy 12-ounce pound. The British Imperial system codified the ounce in 1824. The modern exact definition (28.349523125 g) was set by the 1959 International Yard and Pound Agreement.
Interesting fact: A troy ounce (31.1 g) used for gold is heavier than an avoirdupois ounce (28.35 g) used for food — so an "ounce" of gold contains more metal than an "ounce" of flour. A standard large hen's egg weighs approximately 56–63 grams (about 2 oz).