Unit Converter
Convert between measurement units for cooking, construction, and land. Supports metric, imperial, and Thai units including rai, wah, and baht (gold weight).
About This Unit Converter
This free online unit converter handles five major categories of measurements: Length, Weight/Mass, Volume (including kitchen measurements), Temperature, and Area (including Thai land units). It is designed for practical, everyday use — whether you are cooking a recipe from another country, planning a construction project that mixes metric and imperial plans, or calculating Thai land area in rai and square wah.
Unlike generic unit converters, this tool includes specialized units for Southeast Asia. Thai land measurements (rai, ngan, square wah) and the Thai gold weight unit (baht) are fully supported. The kitchen category includes cups, tablespoons, teaspoons, and fluid ounces alongside metric volumes, making it perfect for recipe conversion.
Length Conversion Reference
Length is the most commonly converted measurement category. The metric system (meters, centimeters, kilometers) is used worldwide, while the imperial system (inches, feet, yards, miles) is still used in the United States, United Kingdom, and a few other countries. In Thailand, the metric system is official, but the traditional unit wah (วา) — equal to exactly 2 meters — remains widely used in land measurement.
Key Length Conversions:
- 1 inch = 2.54 cm | 1 cm = 0.3937 inches
- 1 foot = 30.48 cm = 0.3048 m
- 1 yard = 0.9144 m | 1 meter = 1.0936 yards
- 1 mile = 1.60934 km | 1 km = 0.6214 miles
- 1 wah (Thai) = 2 meters = 6.5617 feet
Kitchen Volume Conversions
Converting between cups, tablespoons, teaspoons, and metric volumes (milliliters, liters) is one of the most common needs in the kitchen. American recipes typically use volumetric measurements (cups, tablespoons), while European and Asian recipes often use weight (grams) or metric volume (ml, liters). This converter bridges both systems.
Kitchen Quick Reference:
- 1 cup (US) = 236.59 ml = 16 tablespoons
- 1 tablespoon = 14.79 ml = 3 teaspoons
- 1 teaspoon = 4.93 ml
- 1 fluid ounce = 29.57 ml
- 1 gallon = 3,785.41 ml = 3.785 liters
- 1 liter = 4.227 cups = 33.814 fl oz
When following baking recipes, precision matters. Even small measurement errors can affect the texture and rise of baked goods. Use our converter to get exact milliliter equivalents for cup-based recipes, especially when using a kitchen scale is more practical than measuring cups.
Thai Land Measurements Explained
Thailand uses a unique land measurement system that predates the metric system. Understanding these units is essential for anyone buying, selling, or leasing land in Thailand. The system is based on the wah (a linear unit of 2 meters) and its square equivalent.
Thai Land Unit Hierarchy:
- 1 square wah (ตารางวา) = 4 m²
- 1 ngan (งาน) = 100 square wah = 400 m²
- 1 rai (ไร่) = 4 ngan = 400 square wah = 1,600 m²
- 1 rai = approximately 0.395 acres
- 1 acre = approximately 2.529 rai
Land prices in Thailand are typically quoted per square wah in urban areas and per rai in rural areas. A typical house plot in Bangkok might be 50-100 square wah (200-400 m²), while agricultural land is measured in rai. Understanding these conversions is crucial for comparing land values across different measurement systems.
Temperature Conversion Formulas
Temperature conversion is unique because the scales do not share a common zero point. Unlike other units where you simply multiply by a conversion factor, temperature requires both multiplication and addition.
Conversion Formulas:
Celsius to Fahrenheit: °F = (°C × 9/5) + 32
Fahrenheit to Celsius: °C = (°F - 32) × 5/9
Celsius to Kelvin: K = °C + 273.15
Kelvin to Celsius: °C = K - 273.15
Common reference points: water freezes at 0°C / 32°F / 273.15K and boils at 100°C / 212°F / 373.15K. Normal human body temperature is approximately 37°C / 98.6°F. Room temperature is typically 20-25°C / 68-77°F.
Weight and Mass Conversions
The weight category covers both everyday measurements (kilograms, pounds, ounces) and the Thai gold weight unit (baht). The metric system uses grams and kilograms, while the imperial system uses ounces and pounds. In cooking, grams are preferred for precision, while ounces and pounds are common in US and UK recipes.
Key Weight Conversions:
- 1 kilogram = 2.205 pounds = 35.274 ounces
- 1 pound = 453.59 grams = 16 ounces
- 1 ounce = 28.35 grams
- 1 baht (Thai gold) = 15.244 grams
The Thai gold baht is an important unit for anyone buying gold in Thailand. Gold prices are quoted per baht of weight, and knowing that 1 baht = 15.244 grams helps compare prices with international gold markets that quote in grams or troy ounces (1 troy ounce = 31.1035 grams = approximately 2.04 baht).
Construction Unit Conversions
Construction projects frequently require converting between metric and imperial measurements, especially in Thailand where building plans may use meters while imported materials are specified in feet and inches. International contractors and homeowners renovating properties abroad need reliable conversions for accurate material ordering and cost estimation.
For floor area calculations, converting between square meters and square feet is essential. A typical Thai condominium unit might be listed as 35 square meters (approximately 377 square feet), while an American apartment might be advertised as 800 square feet (approximately 74.3 square meters). Understanding these conversions helps compare properties across different markets and ensures you order the correct amount of flooring, tiles, or paint.
Summary
This unit converter is your go-to tool for quick, accurate measurement conversions across five major categories. Whether you are following a foreign recipe, comparing property sizes, checking weather temperatures, or calculating Thai land area, the converter delivers instant results with full precision. It includes specialized Thai units (rai, ngan, square wah, baht gold weight) that are hard to find in generic converters, making it particularly useful for anyone living in, working in, or doing business with Thailand.
All calculations run entirely in your browser with no data sent to any server. Use the quick preset buttons for common conversions, or select any combination of units within a category for custom conversions. Bookmark this page for easy access whenever you need reliable unit conversion.
FAQ
How do I convert cups to milliliters?
Select the "Volume / Kitchen" category, choose "Cup (US)" as the "from" unit and "Milliliter (ml)" as the "to" unit, then enter the number of cups. One US cup equals approximately 236.59 milliliters. This conversion is essential for following international recipes, as US recipes use cups while most other countries use metric measurements (ml or liters).
How do I convert Thai rai to square meters?
Select the "Area / Land" category, choose "Rai" as the "from" unit and "Square Meter" as the "to" unit. One rai equals exactly 1,600 square meters. Thai land measurements follow a system where 1 rai = 4 ngan = 400 square wah. Each square wah is 4 square meters (since 1 wah = 2 meters). This system is used exclusively in Thai real estate and land transactions.
What is the difference between a US cup and a metric cup?
A US cup measures approximately 236.59 ml, while a metric cup (used in Australia, Canada, and New Zealand) measures exactly 250 ml. Our converter uses the US cup standard, which is the most common in recipes from the United States. If you are following an Australian or Canadian recipe, adjust accordingly by using 250 ml per metric cup.
How do I convert Celsius to Fahrenheit?
Select the "Temperature" category, choose "Celsius" as the "from" unit and "Fahrenheit" as the "to" unit. The formula is: F = (C x 9/5) + 32. For example, 100°C = 212°F (boiling point of water), 0°C = 32°F (freezing point), and 37°C = 98.6°F (normal body temperature). Our calculator handles this conversion automatically with full precision.
What is a "wah" in Thai measurements?
A wah (วา) is a traditional Thai unit of length equal to exactly 2 meters. It is commonly used in land measurement in Thailand. When measuring area, one square wah (ตารางวา) equals 4 square meters. Thai land titles and real estate listings typically express land area in rai-ngan-square wah format, where 1 rai = 4 ngan = 400 square wah = 1,600 square meters.
How many tablespoons are in a cup?
There are 16 US tablespoons in 1 US cup. You can verify this with our converter: 1 cup = 236.59 ml, and 1 tablespoon = 14.79 ml, so 236.59 / 14.79 = approximately 16 tablespoons. This is a handy conversion for cooking when you only have tablespoon measures available. Similarly, 1 tablespoon = 3 teaspoons, so 1 cup = 48 teaspoons.
How do I convert between feet and meters for construction?
Select the "Length" category, choose "Foot" and "Meter." One foot equals exactly 0.3048 meters (or 30.48 centimeters). Conversely, 1 meter = approximately 3.281 feet. This conversion is essential in construction when working with plans that mix metric and imperial units. For example, a room that is 12 feet long is approximately 3.66 meters.
What is a Thai baht (weight) and how is it different from baht (currency)?
The Thai baht as a unit of weight (บาท) equals approximately 15.244 grams. It is primarily used for measuring gold in Thailand. When you hear "gold costs X baht per baht," the first "baht" is currency and the second is weight. A "baht" of gold is a specific weight (15.244g), and Thai gold shops exclusively use this unit. This weight unit has been used for centuries and predates the Thai currency system.