Convert carats to milligrams

1 ct = 200 mg — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.

200mg
✓ Exact 1 ct = 200 mg
1 ct = 200 mg

How to convert carats to milligrams

Multiply the number of carats by 200 to get milligrams.

The exact factor is 200 .

Carat: The metric carat: exactly 200 mg.

Carat to Milligram conversion table

Carats (ct) Milligrams (mg)
1 ct 200
2 ct 400
3 ct 600
5 ct 1000
10 ct 2000
20 ct 4000
25 ct 5000
50 ct 10 000
100 ct 20 000
250 ct 50 000
500 ct 100 000
1000 ct 200 000

Milligram to Carat conversion table

Milligrams (mg) Carats (ct)
1 mg 0.005
2 mg 0.01
3 mg 0.015
5 mg 0.025
10 mg 0.05
20 mg 0.1
25 mg 0.125
50 mg 0.25
100 mg 0.5
250 mg 1.25
500 mg 2.5
1000 mg 5

Frequently asked

How many milligrams are in a carat?

One carat equals 200 milligrams (ct → mg). That figure is exact, not rounded.

How do you convert carats to milligrams?

Multiply the number of carats by 200 to get milligrams.

What is 1 mg in carats?

One milligram is 0.005 carats.

What is 10 ct in mg?

10 ct = 2000 mg.

What exactly is a carat?

The metric carat: exactly 200 mg.

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