Convert milligrams to carats
1 mg = 0.005 ct — exactly. Both units are defined against the SI, so this factor is a fraction, not an approximation.
0.005ct
As a fraction: 1/200
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1 mg = 0.005 ct
Show this value in all 34 weight & mass units
- Megagrams Mg 1e-9
- Kilograms kg 0.000 001
- Hectograms hg 0.000 01
- Decagrams dag 0.0001
- Grams g 0.001
- Decigrams dg 0.01
- Centigrams cg 0.1
- Milligrams mg 1
- Micrograms µg 1000
- Nanograms ng 1 000 000
- Picograms pg 1 000 000 000
- Tonnes t 1e-9
- Kilotonnes kt 1e-12
- Megatonnes Mt 1e-15
- Quintals q 1e-8
- Carats ct 0.005
- Pounds lb 0.000 002 204 622 621 85
- Ounces oz 0.000 035 273 961 949 6
- Drams dr 0.000 564 383 391 193
- Grains gr 0.015 432 358 352 9
- Stones st 0.000 000 157 473 044 418
- Hundredweight (US)s cwt (US) 2.20462262185e-8
- Hundredweight (UK)s cwt (UK) 1.96841305522e-8
- Short ton (US)s tn 1.10231131092e-9
- Long ton (UK)s LT 9.84206527611e-10
- Troy ounces ozt 0.000 032 150 746 568 6
- Troy pounds lbt 0.000 002 679 228 880 72
- Pennyweights dwt 0.000 643 014 931 373
- Slugs slug 6.85217658568e-8
- Atomic mass units u 6.02214075367e+20
- Electron masss mₑ 1.09776910426e+24
- Planck masss mₚ 45.946 718 347 5
- Earth masss M🜨 1.67442483507e-31
- Solar masss M☉ 5.02785431289e-37
Every row is Milligram (mg) converted through the kilogram, in exact rational arithmetic.
How to convert milligrams to carats
Multiply the number of milligrams by 0.005 to get carats.
The exact factor is 0.005 — as a fraction, 1/200.
Carat: The metric carat: exactly 200 mg.
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 |
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 |
Frequently asked
How many carats are in a milligram?
One milligram equals 0.005 carats (mg → ct). That figure is exact, not rounded.
How do you convert milligrams to carats?
Multiply the number of milligrams by 0.005 to get carats.
What is 1 ct in milligrams?
One carat is 200 milligrams.
What is 10 mg in ct?
10 mg = 0.05 ct.
What exactly is a carat?
The metric carat: exactly 200 mg.