Convert acres to rais

1 ac=2.52929rai

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

You have

Equals

2.529285

Conversion formula

Forward

rais = acres × 2.52929

Reverse

acres = rais × 0.3954

Example: 10 ac × 2.52929 = 25.2929 rai.

About both units

From

Acre

The acre equals 4046.86 square metres — originally the area a team of oxen could plough in a day. It is the standard rural land unit in the US, UK and Canada. Suburban American lots are typically a quarter to half an acre. 640 acres equal one square mile.

Real-world: A US suburban lot is 0.25–0.5 acre. A standard UK rural property might be 5 acres. A football pitch is about 1.8 acres.

Read full acre reference →

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 →

Acre to Rai conversion table

Common acres to rais values for quick reference.

Acre (ac)	Rai (rai)
1 ac	2.52929 rai
5 ac	12.6464 rai
10 ac	25.2929 rai
50 ac	126.464 rai
100 ac	252.929 rai
500 ac	1,264.64 rai
1,000 ac	2,529.29 rai
5,000 ac	12,646.43 rai
10,000 ac	25,292.85 rai
50,000 ac	126,464.26 rai

Tips & common mistakes

Quick tips

1 acre = 43,560 ft² = 0.4047 ha.
640 acres = 1 square mile — a "section" in US land survey.
An acre is 43,560 ft² — a useful number for US real-estate calculations.

Avoid these

Using "acre" in modern European property — use hectares or m² instead.
Assuming an acre is a specific shape — it is only an area (any shape).
Multiplying acres by 4000 m² — correct value is 4046.86.

Frequently asked questions

How many rais in a acre?

One acre equals 2.52929 rais.

How do I convert acres to rais?

Multiply the acre value by 2.52929 to get the equivalent in rais.

What is 100 acres in rais?

100 acres equals 252.929 rais.

Is a acre bigger than a rai?

Yes. 1 acre equals 2.52929 rais, so one acre is larger.

How to convert acres to rais without a calculator?

Multiply by 2.53 for a quick estimate; use a calculator for precise results.

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Convert acres to rais

🧮 Conversion formula