Convert Carats (ct) to Stones (st)

1 ct = 0 st

How many Stones in a Carat?Printable chart →

Converting carats (ct) to stones (st) is essential for understanding gemstone weights. With a conversion factor of 1 ct = 3.1495e-5 st, this tool helps you make sense of jewelry weights effortlessly.

Carat (ct)

Stone (st)

0.000031

Formula: st = ct × 3.1495e-5

Conversion Formula

st = ct × 3.1495e-5

Reverse: ct = st × 31751.4

Quick mental math: To estimate stones from carats, divide the carat weight by 31751.4.

Conversion Examples

1 ct × 0.0000314946 =

0 st

1 Carats = 0 Stones

5 ct × 0.0000314946 =

0 st

5 Carats = 0 Stones

10 ct × 0.0000314946 =

0 st

10 Carats = 0 Stones

25 ct × 0.0000314946 =

0.001 st

25 Carats = 0.001 Stones

50 ct × 0.0000314946 =

0.002 st

50 Carats = 0.002 Stones

100 ct × 0.0000314946 =

0.003 st

100 Carats = 0.003 Stones

Carat to Stone Table

Quick convert your value:

ct =—st

Start:Step:Rows:Precision:

Carat (ct)	Stone (st)	Fraction
1,000	0.03149462	1/32
2,000	0.06298925	1/16
3,000	0.09448387	3/32
4,000	0.1259785	1/8
5,000	0.15747312	5/32
6,000	0.18896775	3/16
7,000	0.22046237	7/32
8,000	0.251957	1/4
9,000	0.28345162	9/32
10,000	0.31494625	5/16
11,000	0.34644087	11/32
12,000	0.3779355	3/8
13,000	0.40943012	13/32
14,000	0.44092475	7/16
15,000	0.47241937	15/32
16,000	0.50391399	1/2
17,000	0.53540862	17/32
18,000	0.56690324	9/16
19,000	0.59839787	19/32
20,000	0.62989249	5/8

Unit Definitions

What is a Carat (ct)?

Metric (SI)Worldwide

A carat (ct) is a unit of weight used for gemstones and pearls, equivalent to 200 milligrams.

History

The term 'carat' originated from the carob seeds that were historically used as a balance scale for weighing gems. Over time, it became a standard unit of measure in the gem industry.

Current Use

Today, carats are universally accepted in the jewelry industry for measuring the weight of precious stones.

What is a Stone (st)?

ImperialUnited Kingdom, Ireland

A stone (st) is a unit of weight commonly used in the UK and Ireland, equivalent to 14 pounds or approximately 6.35 kilograms.

History

The stone as a measure dates back to the Middle Ages when various stones were used for weighing goods in markets. It was standardized in the 14th century.

Current Use

While stones are still used in the UK for measuring body weight, their use in gemology is less common, making conversions to carats necessary for clarity.

Frequently Asked Questions

How many stones is a 500 ct diamond?

To convert 500 carats to stones, you multiply 500 by 3.1495e-5. This results in approximately 0.0157 stones. This conversion is useful for jewelers and collectors who need to understand the weight of diamonds in different units.

If I have 25000 ct of gemstones, how many stones do I have?

Using the conversion factor, 25000 ct equals 0.7898 stones. This is particularly relevant for gem traders who deal in large quantities and need to provide accurate weights to clients.

What is the stone equivalent of 1000000 ct?

When you convert 1000000 ct, you find that it equals 31.4946 stones. This large weight is commonly encountered in industrial settings where bulk gemstones are processed.

How is the carat to stone conversion useful in jewelry making?

The conversion helps jewelers who need to specify weights in stones for customers. For example, a piece that weighs 150 ct is about 0.0047 stones, allowing for more precise pricing and design considerations.

Why do we use carats and stones in weight measurement?

Carats are often used for smaller gemstones, while stones are used for larger weights. For instance, a 200 ct emerald is about 0.0063 stones, emphasizing the need for clarity in weight units across various types of gemstones.

Popular Weight Conversions

Kilogram to Poundkg → lbs Kilogram to Gramkg → g Kilogram to Milligramkg → mg Kilogram to Metric Tonkg → t Kilogram to Ouncekg → oz Kilogram to Stonekg → st Kilogram to US Tonkg → ton Kilogram to Imperial Tonkg → long ton Kilogram to Caratkg → ct Kilogram to Microgramkg → μg Kilogram to Dekagramkg → dag Kilogram to Quintalkg → q Kilogram to Kipkg → kip Gram to Kilogramg → kg Gram to Milligramg → mg Gram to Metric Tong → t Gram to Poundg → lbs Gram to Ounceg → oz Gram to Stoneg → st Gram to US Tong → ton Gram to Imperial Tong → long ton Gram to Caratg → ct Gram to Microgramg → μg Gram to Dekagramg → dag Gram to Quintalg → q Gram to Kipg → kip Milligram to Kilogrammg → kg Milligram to Grammg → g Milligram to Metric Tonmg → t Milligram to Poundmg → lbs Milligram to Ouncemg → oz Milligram to Stonemg → st Milligram to US Tonmg → ton Milligram to Imperial Tonmg → long ton Milligram to Caratmg → ct Milligram to Microgrammg → μg Milligram to Dekagrammg → dag Milligram to Quintalmg → q Milligram to Kipmg → kip Metric Ton to Kilogramt → kg Metric Ton to Gramt → g Metric Ton to Milligramt → mg Metric Ton to Poundt → lbs Metric Ton to Ouncet → oz Metric Ton to Stonet → st Metric Ton to US Tont → ton Metric Ton to Imperial Tont → long ton Metric Ton to Caratt → ct Metric Ton to Microgramt → μg Metric Ton to Dekagramt → dag Metric Ton to Quintalt → q Metric Ton to Kipt → kip Pound to Kilogramlbs → kg Pound to Gramlbs → g Pound to Milligramlbs → mg Pound to Metric Tonlbs → t Pound to Ouncelbs → oz Pound to Stonelbs → st Pound to US Tonlbs → ton Pound to Imperial Tonlbs → long ton Pound to Caratlbs → ct Pound to Microgramlbs → μg Pound to Dekagramlbs → dag Pound to Quintallbs → q Pound to Kiplbs → kip Ounce to Kilogramoz → kg Ounce to Gramoz → g Ounce to Milligramoz → mg Ounce to Metric Tonoz → t Ounce to Poundoz → lbs Ounce to Stoneoz → st Ounce to US Tonoz → ton Ounce to Imperial Tonoz → long ton Ounce to Caratoz → ct Ounce to Microgramoz → μg Ounce to Dekagramoz → dag Ounce to Quintaloz → q Ounce to Kipoz → kip Stone to Kilogramst → kg Stone to Gramst → g Stone to Milligramst → mg Stone to Metric Tonst → t Stone to Poundst → lbs Stone to Ouncest → oz Stone to US Tonst → ton Stone to Imperial Tonst → long ton Stone to Caratst → ct Stone to Microgramst → μg Stone to Dekagramst → dag Stone to Quintalst → q Stone to Kipst → kip US Ton to Kilogramton → kg US Ton to Gramton → g US Ton to Milligramton → mg US Ton to Metric Tonton → t US Ton to Poundton → lbs US Ton to Ounceton → oz US Ton to Stoneton → st US Ton to Imperial Tonton → long ton US Ton to Caratton → ct US Ton to Microgramton → μg US Ton to Dekagramton → dag US Ton to Quintalton → q US Ton to Kipton → kip Imperial Ton to Kilogramlong ton → kg Imperial Ton to Gramlong ton → g Imperial Ton to Milligramlong ton → mg Imperial Ton to Metric Tonlong ton → t Imperial Ton to Poundlong ton → lbs Imperial Ton to Ouncelong ton → oz Imperial Ton to Stonelong ton → st Imperial Ton to US Tonlong ton → ton Imperial Ton to Caratlong ton → ct Imperial Ton to Microgramlong ton → μg Imperial Ton to Dekagramlong ton → dag Imperial Ton to Quintallong ton → q Imperial Ton to Kiplong ton → kip Carat to Kilogramct → kg Carat to Gramct → g Carat to Milligramct → mg Carat to Metric Tonct → t Carat to Poundct → lbs Carat to Ouncect → oz Carat to US Tonct → ton Carat to Imperial Tonct → long ton Carat to Microgramct → μg Carat to Dekagramct → dag Carat to Quintalct → q Carat to Kipct → kip Microgram to Kilogramμg → kg Microgram to Gramμg → g Microgram to Milligramμg → mg Microgram to Metric Tonμg → t Microgram to Poundμg → lbs Microgram to Ounceμg → oz Microgram to Stoneμg → st Microgram to US Tonμg → ton Microgram to Imperial Tonμg → long ton Microgram to Caratμg → ct Microgram to Dekagramμg → dag Microgram to Quintalμg → q Microgram to Kipμg → kip Dekagram to Kilogramdag → kg Dekagram to Gramdag → g Dekagram to Milligramdag → mg Dekagram to Metric Tondag → t Dekagram to Pounddag → lbs Dekagram to Ouncedag → oz Dekagram to Stonedag → st Dekagram to US Tondag → ton Dekagram to Imperial Tondag → long ton Dekagram to Caratdag → ct Dekagram to Microgramdag → μg Dekagram to Quintaldag → q Dekagram to Kipdag → kip Quintal to Kilogramq → kg Quintal to Gramq → g Quintal to Milligramq → mg Quintal to Metric Tonq → t Quintal to Poundq → lbs Quintal to Ounceq → oz Quintal to Stoneq → st Quintal to US Tonq → ton Quintal to Imperial Tonq → long ton Quintal to Caratq → ct Quintal to Microgramq → μg Quintal to Dekagramq → dag Quintal to Kipq → kip Kip to Kilogramkip → kg Kip to Gramkip → g Kip to Milligramkip → mg Kip to Metric Tonkip → t Kip to Poundkip → lbs Kip to Ouncekip → oz Kip to Stonekip → st Kip to US Tonkip → ton Kip to Imperial Tonkip → long ton Kip to Caratkip → ct Kip to Microgramkip → μg Kip to Dekagramkip → dag Kip to Quintalkip → q

Related Conversions

Kilogram to Stonekg → st Kilogram to Caratkg → ct Gram to Stoneg → st Gram to Caratg → ct Milligram to Stonemg → st

Convert Carats (ct) to Stones (st)

Conversion Formula

Conversion Examples

Carat to Stone Table

Unit Definitions

What is a Carat (ct)?

History

Current Use

What is a Stone (st)?

History

Current Use

Frequently Asked Questions

Popular Weight Conversions

Convert Carat to Other Units

Related Conversions