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Bangkok Local Reference INFOrmation

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Conversion Tables for Thailand: Weight, Area, Temperature and Clothing

Imperial/American to Metric (Fahrenheit to Celsius/centigrade) conversions for length and area, air, body and oven temperatures, and US to UK to Euro clothing conversion tables.

Officially Thailand uses the metric system of measurement for units and weights. However, distance, size, area and weight are frequently quoted in either Imperial (pounds, yards, feet and inches) or metric (kilogrammes, metres and centimetres).

Area - with reference to property, land and building - is frequently measured in Rai, Ngan and Wah.

Temperature is measured in degrees Celsius.

Thailand's Ministry of Energy has further information on the measurement system: Click here

Conversions Tables

Click here for: Foreign Exchange conversions
Click here for conversions of: Length, Area, Weight or Volume
Click here for conversions of: Temperature and Energy Units
Click here for conversions of: Clothing & Shoes (men, women, children)

Length, Area, Weight, Volume Conversion

Imperial/US to Metric: Length
1 inch		2.54 centimetres (cm)
1 foot (ft)	12 inches (in)	0.3048 metre (m)
1 yard (yd)	3 ft	0.9144 m
1 mile	1,760 yd	1.60934 kilometres (km)
1 int nautical mile	2025.4 yd	1852 m

Metric to Imperial/US: Length
1 centimetre (cm)	10 millimetres (mm)	0.3937 in
1 m	100 cm	1.0936 yd / 3.38 ft / 39.37 in
1 kilometre (km)	1000 m	0.62137 mile / 5/8ths of a mile

Imperial/US to Metric: Area
1 in²		645.16 mm²
1 yd²	9 ft²	0.8361 m²
1 acre	4,840 yd²	4046.86 m² / 0.405 hectare
1 mile²	640 acres	2.590 km²

Metric to Imperial/US: Area
1 cm²	100 mm²	0.1550 in²
1 metre² square	10,000 cm²	1.1960 yd²
1 hectare (ha)	10,000 m²	2.471 acres
1 km²	100 ha	0.3861 mile²

Imperial/US to Metric: Weight		Metric to Imperial: Weight
1 ounce	28.35 gram	1 gram	0.035 ounce
1 pound	453.59 gram	1 kilogram	2.2 pounds
Imperial/US to Metric: Volume		Metric to Imperial: Volume
1 US pint	0.473 litres	1 litre	33.2 US / 35.2 Imperial fl ounces
1 Imperial pint	0.568 litres	1 litre	2.11 US / 1.76 Imperial pints
1 cup	0.237 litres	1 litre	4.228 cups
Area: Rai, Ngan, Wah/Hectares, Acres, Square feet
1 Hectare = 6.25 Rai = 2.47 Acres		1 Rai = 1600 square metres = 17,222 square feet
1 Acre = 0.4 hectare = 2.53 Rai		1 Ngan = 400 square metres = 4,306 square feet
		1 Wah = 4 square metres = 43 square feet

Temperature & Energy Conversion

Temperature
Convert Fahrenheit to Celsius		(degrees F - 32) x 0.555		degrees C
Convert Celsius to Fahrenheit		(degrees C x 1.8) + 32		degrees F
Water Boils at		212° F		100° C
Normal body temperature		98.6° F		37° C
Water Freezes at		32° F		0° C
Room temperature		68° F		20° C
Air Temperatures: degrees Celsius (C) to degrees Fahrenheit (F)
0° C = 32° F	5° C = 41° F		10° C = 50° F		15° C = 59° F
20° C = 68° F	25° C = 77° F		30° C = 86° F		35° C = 95° F
Oven Temperatures
Gas Mark	Celsius (C)		Fahrenheit (F)		Description
1/2	130 ° C		250 ° F		Very Slow
1	140 ° C		275 ° F		Very Slow
2	150 ° C		300 ° F		Slow
3	170 ° C		325 ° F		Slow
4	177 ° C		350 ° F		Moderate
5	190 ° C		375 ° F		Moderate
6	200 ° C		400 ° F		Moderately Hot
7	220 ° C		425 ° F		Hot
8	230 ° C		450 ° F		Hot
9	245 ° C		475 ° F		Hot
10	260 ° C		500 ° F		Extremely Hot
Simple conversion formula: to convert Celsius to Fahrenheit minus 2, times 2, plus 32. Example 16C: 16-2=14 x2=28 +32=60F Online temperature conversion from CalculateMe: Click here
Energy Units
KWh (Kilowatt-hours)			BTU ( British Thermal Unit)
1,000 kWh			3.41 million BTU
0.000293071 kWh			1 BTU
Several online converters help with complex energy conversions: CalculateMe for energy conversions: Click here For KWh/BTU conversions see unit conversion: Click here

Clothing & Shoe' Conversion

Women's suits and dresses
USA/American	UK/British	European	Thai
6	8	36 / Small	Small
8	10	38 / Small	Medium
10	12	40 / Med	Large
12	14	42 / Med	X Large
14	16	44 / Large	XX Large
16	18	46 / Xtra-Large	XXX Large
Website 85B provides an easy-to-use International Dress Size Calculator that accommodates US, UK, Euro, Italian, Japanese, Australian, New Zealand and other: Click here
Women's Shoes
6	4.5	37
6.5	5	38
7.5	6	39
8	6.5	40
8.5	7	41
For an online women's shoe size converter: Click here
Bras
Website 85B provides an easy-to-use International Bra Size Calculator that accommodates US, UK, Euro, Italian, Japanese, Australian, New Zealand and other: Click here Website Breast Talk has clear, international bra size conversions: Click here
Men's Suits & Overcoats
USA/American	UK/British	Euro	Thai
36	36	46
38	38	48
40	40	50
42	42	52
44	44	54
Men's Trousers
28	28	71	Small
30	30	76	Medium
32	32	81	Medium
34	34	87	Large
36	36	92	X Large
38	38	97	X Large
40	40	102	XX Large
42	42	107	XXX Large
44	44	112	XXXX Large
Men's Shoes
8	7.5	41
8.5	8	42
9.5	9	43
10	9.5	44
For an online men's shoe size converter: Click here

Children's Clothes
USA/American (in years)	UK/British (height in inches)	European (height in cm)	Thai
3	38	98
4-5	43	104	6
6	45	110
7-8	47	116	8
9	50	122	10
10	60	128	12
11	52	134-140	14
For conversions of infant and child clothes and shoes from US to European standard sizes see website Kidstock: Click here Euro children's shoe sizes are measured in centimetres; 1cm=1 size. For a printable measuring chart and converter for children's shoe size (from Bata Shoes): Click here (PDF)