Carats to Micrograms Converter

1 carat (ct) equals 200,000 micrograms (µg).

Quick answer

1 carat = 200,000 micrograms
1 microgram = 0.000005 carats
Formula: µg = ct × 200,000

From To 200,000

1 carat = 200,000 micrograms

How to convert carats to micrograms

µg = ct × 200,000

To convert carats to micrograms, multiply the number of carats by 200,000.

Example: 18 ct to µg

Start with the value in carats: 18 ct.
Multiply by 200,000: 18 × 200,000 = 3,600,000.
Result: 18 carats = 3,600,000 micrograms.

Going the other way, 1 microgram = 0.000005 carats, so to convert micrograms back to carats you divide by the same number. See micrograms to carats.

Carats to micrograms conversion table

Carats (ct)	Micrograms (µg)
0.25 ct	50,000 µg
0.5 ct	100,000 µg
0.75 ct	150,000 µg
1 ct	200,000 µg
1.5 ct	300,000 µg
2 ct	400,000 µg
2.5 ct	500,000 µg
3 ct	600,000 µg
4 ct	800,000 µg
5 ct	1,000,000 µg
6 ct	1,200,000 µg
7 ct	1,400,000 µg
8 ct	1,600,000 µg
9 ct	1,800,000 µg
10 ct	2,000,000 µg
11 ct	2,200,000 µg
12 ct	2,400,000 µg
13 ct	2,600,000 µg
14 ct	2,800,000 µg
15 ct	3,000,000 µg
16 ct	3,200,000 µg
17 ct	3,400,000 µg
18 ct	3,600,000 µg
19 ct	3,800,000 µg
20 ct	4,000,000 µg
21 ct	4,200,000 µg
22 ct	4,400,000 µg
23 ct	4,600,000 µg
24 ct	4,800,000 µg
25 ct	5,000,000 µg
26 ct	5,200,000 µg
27 ct	5,400,000 µg
28 ct	5,600,000 µg
29 ct	5,800,000 µg
30 ct	6,000,000 µg
31 ct	6,200,000 µg
32 ct	6,400,000 µg
33 ct	6,600,000 µg
34 ct	6,800,000 µg
35 ct	7,000,000 µg

More ct to µg values

What is a carat?

The carat is the unit of mass for gemstones and pearls, equal to exactly 200 milligrams.

More about carats →

What is a microgram?

The microgram is a metric unit of mass equal to one millionth of a gram, or one thousandth of a milligram.

More about micrograms →

Frequently asked questions

How many micrograms are in a carat?

One carat is 200,000 micrograms.

How many carats are in a microgram?

One microgram is 0.000005 carats.

What is the formula to convert carats to micrograms?

µg = ct × 200,000.