Convert rais to square miles

1 rai=0.0006178mi²

Use the converter below to change any rais value into square miles instantly — with formula, conversion table, and real-world examples.

You have

Equals

0.00061776

Conversion formula

Forward

square miles = rais × 0.0006178

Reverse

rais = square miles × 1,618.74

Example: 10 rai × 0.0006178 = 0.006178 mi².

About both units

From

Rai

rai

The rai equals 1600 square metres exactly — the traditional Thai land unit. It is 1/6.25 of a hectare. Still widely used in Thai property transactions and agricultural documents. A rai is subdivided into 4 "ngan" (400 m² each).

Real-world: A small Thai farm might be 10–20 rai (1.6–3.2 ha). Thai rice yields: 400–600 kg per rai.

Read full rai reference →

Square Mile

mi²

The square mile equals 2.589988 square kilometres. It is used for US and UK geographic areas — city, county, state and country sizes. Greater London is 607 mi²; the US state of Texas is 268,597 mi².

Real-world: New York City is 302.6 mi². Texas is 268,597 mi². Greater London is 607 mi².

Read full square mile reference →

Rai to Square Mile conversion table

Common rais to square miles values for quick reference.

Rai (rai)	Square Mile (mi²)
1 rai	0.0006178 mi²
5 rai	0.003089 mi²
10 rai	0.006178 mi²
50 rai	0.03089 mi²
100 rai	0.06178 mi²
500 rai	0.3089 mi²
1,000 rai	0.6178 mi²
5,000 rai	3.08882 mi²
10,000 rai	6.17763 mi²
50,000 rai	30.8882 mi²

Tips & common mistakes

Quick tips

1 rai = 1600 m² = 0.16 ha.
1 rai = 4 ngan = 400 tarang wa.
1 hectare = 6.25 rai.

Avoid these

Assuming rai equals hectare — only 16%.
Mixing rai with ngan or tarang wa without conversion.
Using rai outside Thailand — not internationally recognised.

Frequently asked questions

How many square miles in a rai?

One rai equals 0.0006178 square miles.

How do I convert rais to square miles?

Multiply the rai value by 0.0006178 to get the equivalent in square miles.

What is 100 rais in square miles?

100 rais equals 0.06178 square miles.

Is a rai bigger than a square mile?

No. 1 rai equals 0.0006178 square miles, so one rai is smaller.

How to convert rais to square miles without a calculator?

Multiply by 0 for a quick estimate; use a calculator for precise results.

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Convert rais to square miles

🧮 Conversion formula