⚖️ Milligrams to Carats Converter

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1 milligram =
0.005 carats
1 carat =
200 milligrams
Formula
ct = mg × 0.005
Handy values
100 mg = 0.5 ct · 1,000 mg = 5 ct · 10,000 mg = 50 ct

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⚡ Milligrams to Carats: the quick answer

1 mg = 0.005 ct 1 milligram equals 0.005 carats

To convert milligrams to carats, multiply the value by 0.005. To go the other way, multiply carats by 200 to get milligrams.

↔ Convert carats to milligrams instead

🧮 Formula

Milligrams to Carats
ct = mg × 0.005
Carats to Milligrams
mg = ct × 200

Where

  • mg = the weight in milligrams
  • ct = the weight in carats
Every unit here is defined by its weight in kilograms, so the conversion factor is (kilograms per milligram) ÷ (kilograms per carat).

📊 Milligrams to Carats conversion table

Milligrams (mg)Carats (ct)
1 mg0.005 ct
5 mg0.025 ct
10 mg0.05 ct
25 mg0.125 ct
50 mg0.25 ct
100 mg0.5 ct
250 mg1.25 ct
500 mg2.5 ct
1,000 mg5 ct
2,500 mg12.5 ct
5,000 mg25 ct
10,000 mg50 ct
100,000 mg500 ct
1,000,000 mg5,000 ct

📘 About these units

Milligram (mg). A milligram is one thousandth of a gram, used for medicine doses and nutrition labels.

Carat (ct). The metric carat is 200 milligrams, the unit for diamonds and gemstones.

❓ Frequently asked questions

How many carats are in one milligram?

There are 0.005 carats in one milligram.

How do I convert milligrams to carats?

Multiply the number of milligrams by 0.005. For example, 10 milligrams equal 0.05 carats.

How many milligrams are in one carat?

One carat equals 200 milligrams.

How many carats is 1,000 milligrams?

5 carats. Other common values: 100 milligrams = 0.5 carats and 10,000 milligrams = 50 carats.

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Anonymous · 22 Oct 2026