Unit Converter - Thai Numerals
Convert between units of length, weight, temperature, volume, area, time, and more with Thai numeral system support.
A free online unit converter for length, weight, temperature, volume, area, speed, time, data storage, energy, pressure, and angle. Convert between metric and imperial units instantly as you type — no need to press a convert button. Handles the tricky cases correctly: temperature conversions include the 32-degree offset (C to F is not simple multiplication), and volume conversions distinguish between US gallons (3.785 L) and Imperial gallons (4.546 L). Pin your most-used units for quick access. Supports traditional regional units like hath, gaz, tola, and ser used in South Asia.
About This Numeral System
Thai numerals (๐ through ๙) are used in Thailand for the Thai language, spoken by roughly 60 million people. They are used alongside Western Arabic numerals (0–9) in everyday Thai life — prices, dates, and official documents often use both systems interchangeably. Thai numerals also appear on currency and in formal contexts. This calculator displays results in Thai numerals for users who read and write in Thai.
How This Calculator Works
Unit Conversion: Result = Input × (source factor / target factor)
Each unit category (length, weight, volume, etc.) has a base unit and conversion factors. The calculator converts the input to the base unit, then from the base unit to the target unit. Temperature is a special case: C to F uses F = C × 9/5 + 32, because the zero points differ.
Worked Examples
Input: Convert 10 miles to kilometres
Result: 10 miles = 16.0934 km (1 mile = 1.60934 km)
Input: Convert 100°C to Fahrenheit
Result: F = 100 × 9/5 + 32 = 212°F (boiling point of water)
Key Features
- Length, weight, temperature, volume, area, speed, time, data, energy, pressure
- Instant conversion as you type
- Pinnable favourite units
Frequently Asked Questions
How do I convert Celsius to Fahrenheit?
To convert Celsius to Fahrenheit, multiply by 9/5 and add 32: F = C × 9/5 + 32. For example, 25°C = 25 × 1.8 + 32 = 77°F. To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9: C = (F - 32) × 5/9. This calculator handles both directions automatically — just enter the value and select the units.
Why does my temperature conversion show a different result than expected?
Temperature conversions are not simple multiplication like other units. Celsius to Fahrenheit is F = C × 9/5 + 32, not F = C × 1.8. The offset of 32 is the most common source of error. Also, negative temperatures work correctly: -40°C = -40°F, which is the point where the two scales meet. The calculator handles all of these correctly, but if you are comparing with a tool that uses a simplified formula, the results will differ.
How do I convert between units that use different measurement standards (US vs Imperial)?
The most confusing case is volume: a US gallon is 3.785 litres while an Imperial (UK) gallon is 4.546 litres — a 20% difference. Similarly, a US pint is 473 ml while an Imperial pint is 568 ml. The calculator defaults to US units. If you need Imperial units, check the category label — where both exist, they are listed separately.
What unit categories are supported?
The unit converter supports length, weight/mass, temperature, volume, area, speed, time, data storage, energy, pressure, and angle conversions.
How accurate are the conversions?
All conversions use internationally recognised conversion factors. Results are displayed to up to 10 significant figures.
Do people in Thailand actually use Thai numerals day to day?
Yes, though Western numerals are also common. Thai numerals appear on official documents, currency, price tags at markets, and in many printed materials. Many Thais use both systems interchangeably depending on context.
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