Milligram (mg)
A milligram is one thousandth of a gram, used for very small masses such as medication dosages.
Milligrams are standard on prescription labels, supplement facts panels, and analytical chemistry.
Milligram to Gram
Convert milligram to gram instantly. Type in either field — results update live.
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Weight & Mass Milligram Gram
1 milligram = 0.001 grams
Unit
Unit
Conversion table
Selected mg values converted to g using the exact factor from this tool.
| mg | g |
|---|---|
| 0.01 | 0.00001 |
| 0.1 | 0.0001 |
| 1 | 0.001 |
| 2 | 0.002 |
| 3 | 0.003 |
| 5 | 0.005 |
| 10 | 0.01 |
| 20 | 0.02 |
| 50 | 0.05 |
| 100 | 0.1 |
| 1,000 | 1 |
How to convert
Exact conversion factors in both directions, plus a worked example.
1 mg = 0.001 g
1 g = 1000 mg
To convert milligram to gram, multiply by 0.001.
To convert gram to milligram, multiply by 1000.
Example: convert 15 mg to g
15 × 0.001 = 0.015 g
About these units
Short background on the units used in this conversion.
Gram (g)
A gram is one thousandth of a kilogram — the everyday metric unit for small masses and recipe ingredients.
Grams appear on nutrition labels, jewelry scales, laboratory balances, and European cooking measurements.
Frequently asked questions
How many grams are in one milligram?
One milligram equals 0.001 grams. Multiply your milligrams value by 0.001 to convert to grams.
What is the conversion formula?
g = mg × 0.001The reverse is
mg = g × 1,000, using the same exact factors as this converter.Is this Milligram to Gram converter private?
Yes. All calculations run locally in your browser. Nothing you type is sent to a server.
All milligram conversions
Jump to any weight & mass conversion starting from milligram — including the reverse direction and every other unit in our dataset.
gram (g) → milligram (mg)
milligram (mg) → kilogram (kg)milligram (mg) → microgram (µg)milligram (mg) → centigram (cg)milligram (mg) → decigram (dg)milligram (mg) → dekagram (dag)milligram (mg) → hectogram (hg)milligram (mg) → metric ton (tonne) (t)milligram (mg) → picogram (pg)milligram (mg) → nanogram (ng)milligram (mg) → femtogram (fg)milligram (mg) → attogram (ag)milligram (mg) → megagram (Mg)milligram (mg) → gigagram (Gg)milligram (mg) → teragram (Tg)milligram (mg) → petagram (Pg)milligram (mg) → exagram (Eg)milligram (mg) → pound (lb)milligram (mg) → ounce (oz)milligram (mg) → stone (st)milligram (mg) → short ton (us) (ton)milligram (mg) → long ton (uk) (long ton)milligram (mg) → hundredweight (us) (cwt)milligram (mg) → hundredweight (uk) (cwt-UK)milligram (mg) → quarter (us) (qr)milligram (mg) → dram (avoirdupois) (dr)milligram (mg) → grain (gr)milligram (mg) → slugmilligram (mg) → troy ounce (oz t)milligram (mg) → dram (apothecary) (dr ap)milligram (mg) → troy pound (lb t)milligram (mg) → pennyweight (dwt)milligram (mg) → carat (ct)milligram (mg) → atomic mass unit (u)milligram (mg) → planck mass (mₚ)milligram (mg) → electron mass (mₑ)milligram (mg) → proton mass (mₚ⁺)milligram (mg) → neutron mass (mₙ)milligram (mg) → solar mass (M☉)milligram (mg) → earth mass (M⊕)milligram (mg) → quintal (q)milligram (mg) → mommemilligram (mg) → cattymilligram (mg) → piculmilligram (mg) → arrobamilligram (mg) → macemilligram (mg) → baht (gold)milligram (mg) → talent (biblical)milligram (mg) → minamilligram (mg) → shekel