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
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1 ct = 200 mg
Show this value in all 34 weight & mass units
- Megagrams Mg 0.000 000 2
- Kilograms kg 0.0002
- Hectograms hg 0.002
- Decagrams dag 0.02
- Grams g 0.2
- Decigrams dg 2
- Centigrams cg 20
- Milligrams mg 200
- Micrograms µg 200 000
- Nanograms ng 200 000 000
- Picograms pg 200 000 000 000
- Tonnes t 0.000 000 2
- Kilotonnes kt 2e-10
- Megatonnes Mt 2e-13
- Quintals q 0.000 002
- Carats ct 1
- Pounds lb 0.000 440 924 524 37
- Ounces oz 0.007 054 792 389 92
- Drams dr 0.112 876 678 239
- Grains gr 3.086 471 670 59
- Stones st 0.000 031 494 608 883 6
- Hundredweight (US)s cwt (US) 0.000 004 409 245 243 7
- Hundredweight (UK)s cwt (UK) 0.000 003 936 826 110 44
- Short ton (US)s tn 0.000 000 220 462 262 185
- Long ton (UK)s LT 0.000 000 196 841 305 522
- Troy ounces ozt 0.006 430 149 313 73
- Troy pounds lbt 0.000 535 845 776 144
- Pennyweights dwt 0.128 602 986 275
- Slugs slug 0.000 013 704 353 171 4
- Atomic mass units u 1.20442815073e+23
- Electron masss mₑ 2.19553820852e+26
- Planck masss mₚ 9189.343 669 51
- Earth masss M🜨 3.34884967014e-29
- Solar masss M☉ 1.00557086258e-34
Every row is Carat (ct) converted through the kilogram, in exact rational arithmetic.
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.