Tola to gram, ratti and carat converter

1 tola = 11.66 grams. 1 carat = 0.2 grams. 1 ratti = 0.91 carats. Type any weight below to see it in every unit at once.

Weight converter

Weight Unit

—Gram
—Carat
—Ratti (gem)
—Tola
—Masha
—Ratti (gold)
—Troy ounce
—Milligram

Results are rounded. Gem ratti = 182.25 mg. Gold ratti = 121.5 mg.

4 numbers to remember

1 tola= 11.66 gramsGold and silver, South Asia and the Gulf
1 carat= 0.2 gramsEvery gemstone and diamond, worldwide
1 ratti= 0.91 caratsGemstones in the South Asian trade
1 gram= 5 caratsHandy for quick checks

There are two kinds of ratti

This is the main reason weights get mixed up. Always ask which ratti a seller means.

Gemstones

Gem ratti

182.25 mg

= 0.91 carats
= 0.182 grams
About 64 gem ratti in 1 tola
Used by gem sellers in Pakistan and India

Gold

Gold ratti

121.5 mg

= 0.61 carats
= 0.1215 grams
1 tola = 12 masha = 96 ratti
Used by goldsmiths with tola and masha

At Raza Gems we use the gem ratti. Example: our 10.18 ratti natural coral weighs 9.28 carats (10.18 × 0.91125).

Quick conversion table

Read across: each row shows one unit in grams, carats, gem ratti and tola.

Unit	Gram	Carat	Ratti	Tola
1 gram	1	5	5.49	0.08574
1 carat	0.2	1	1.1	0.01715
1 ratti (gem)	0.1822	0.91	1	0.01563
1 tola	11.6638	58.32	64	1

Ratti to carat chart

The ratti sizes people ask for most, in carats and grams.

3 ratti2.73 ct0.55 g
4 ratti3.64 ct0.73 g
5 ratti4.56 ct0.91 g
6 ratti5.47 ct1.09 g
7 ratti6.38 ct1.28 g
8 ratti7.29 ct1.46 g
9 ratti8.20 ct1.64 g
10 ratti9.11 ct1.82 g
11 ratti10.02 ct2.00 g
12 ratti10.93 ct2.19 g

Carat or karat? Weight vs purity

Carat (ct) is weight. 1 ct = 0.2 g. It is used for gemstones and diamonds. 1 carat = 100 points, so a 0.50 ct diamond is a "50 pointer".
Karat (K) is gold purity. Pure gold is split into 24 parts. 24K = 99.9% gold, 22K = 91.6%, 18K = 75%.
Same sound, different job. A ring can have an 18K gold band and a 2 ct ruby.

See today's gold rate by karat

Worked example

You want a 6 ratti blue sapphire.

6 × 0.91125 = 5.47 carats
5.47 × 0.2 = 1.09 grams
Compare stones by carat, then by size in mm.

Tips before you buy by weight

01Ask for carats
Lab reports and world prices use carats. It is the one unit that means the same in every shop.
02Check which ratti
A 5 ratti stone is 4.56 ct with the gem ratti but only 3.04 ct with the gold ratti.
03Look at size too
Two stones with the same weight can look very different. Check the size in mm. Read our buying guide.

Questions about weight units

How many grams are in 1 tola?

1 tola is 11.66 grams (11.6638 g exactly). A 10 tola gold bar weighs 116.64 grams.

How many carats are in 1 ratti?

In the gem trade, 1 ratti is about 0.91 carats (182.25 mg). So 5 ratti is about 4.56 carats.

How many ratti are in 1 gram?

About 5.49 gem ratti. If a goldsmith means the smaller gold ratti (121.5 mg), it is about 8.23 ratti per gram.

Is carat the same as karat?

No. Carat (ct) is the weight of a gemstone: 1 ct = 0.2 g. Karat (K) is the purity of gold: 24K is pure, 22K is 91.6% gold. In British English both are often spelt carat, so check the context.

Why do two shops give a different ratti weight for the same stone?

There are two ratti sizes. The gem ratti is 182.25 mg and the gold ratti is 121.5 mg. Ask which one is used, or ask for the weight in carats, which is the same everywhere.

Which unit should I use when buying a gemstone?

Carats. Lab reports and international prices use carats, so it is the safest unit to compare stones. Ratti is fine as a second number.