⚖️ Carats to Monme (Japan) Converter

5.0 out of 5 (1 rating)

Enter details

1 carat =
0.0533333 monme
1 monme =
18.75 carats
Formula
monme = ct × 0.0533333
Handy values
5 ct = 0.266667 monme · 10 ct = 0.533333 monme · 100 ct = 5.33333 monme

Rate this calculator

Was it useful? A quick star rating helps others — and you can leave a comment too.
Rate it: ★ ★ ★ ★ ★

⚡ Carats to Monme (Japan): the quick answer

1 ct = 0.0533333 monme 1 carat equals 0.0533333 monme

To convert carats to monme, multiply the value by 0.0533333. To go the other way, multiply monme by 18.75 to get carats.

↔ Convert monme to carats instead

🧮 Formula

Carats to Monme (Japan)
monme = ct × 0.0533333
Monme (Japan) to Carats
ct = monme × 18.75

Where

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

📊 Carats to Monme (Japan) conversion table

Carats (ct)Monme (Japan) (monme)
1 ct0.0533333 monme
2 ct0.106667 monme
3 ct0.16 monme
4 ct0.213333 monme
5 ct0.266667 monme
6 ct0.32 monme
7 ct0.373333 monme
8 ct0.426667 monme
9 ct0.48 monme
10 ct0.533333 monme
12 ct0.64 monme
14 ct0.746667 monme
15 ct0.8 monme
20 ct1.06667 monme
21 ct1.12 monme
24 ct1.28 monme
25 ct1.33333 monme
30 ct1.6 monme
40 ct2.13333 monme
50 ct2.66667 monme
60 ct3.2 monme
75 ct4 monme
80 ct4.26667 monme
100 ct5.33333 monme
200 ct10.6667 monme
250 ct13.3333 monme
300 ct16 monme
400 ct21.3333 monme
500 ct26.6667 monme
750 ct40 monme
1,000 ct53.3333 monme

📘 About these units

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

Monme (monme). The monme is 3.75 g, used for pearls in Japan. Used in: Asia — Japan.

❓ Frequently asked questions

How many monme are in one carat?

There are 0.0533333 monme in one carat.

How do I convert carats to monme?

Multiply the number of carats by 0.0533333. For example, 10 carats equal 0.533333 monme.

How many carats are in one monme?

One monme equals 18.75 carats.

How many monme is 12 carats?

0.64 monme. Other common values: 5 carats = 0.266667 monme and 100 carats = 5.33333 monme.

What people are saying
★★★★★
Anonymous · 22 Oct 2026