Convert square kilometers to rais

1 km²=625rai

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

You have

Equals

625

Conversion formula

Forward

rais = square kilometers × 625

Reverse

square kilometers = rais × 0.0016

Example: 10 km² × 625 = 6,250 rai.

About both units

From

Square Kilometer

km²

The square kilometre equals 1,000,000 m² or 100 hectares. It is used for city, region and country areas. Greater London is about 1572 km². The smallest sovereign countries (Monaco, Vatican City) are under 3 km² each.

Real-world: Greater London is 1572 km². France is 643,801 km². The Serengeti National Park is 14,763 km².

Read full square kilometer 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 →

Square Kilometer to Rai conversion table

Common square kilometers to rais values for quick reference.

Square Kilometer (km²)	Rai (rai)
1 km²	625 rai
5 km²	3,125 rai
10 km²	6,250 rai
50 km²	31,250 rai
100 km²	62,500 rai
500 km²	312,500 rai
1,000 km²	625,000 rai
5,000 km²	3,125,000 rai
10,000 km²	6,250,000 rai
50,000 km²	31,250,000 rai

Tips & common mistakes

Quick tips

1 km² = 100 hectares = 1,000,000 m².
1 km² = 0.386 square miles.
Multiply km × km in metric to get km² — but always keep consistent units.

Avoid these

Mixing km² and km when comparing geography — 10 km is a length, 10 km² is an area.
Confusing km² with the square mile (mi²) in international comparisons.
Reading "million km²" as "km²" on continental-scale maps — factor of 10⁶.

Frequently asked questions

How many rais in a square kilometer?

One square kilometer equals 625 rais.

How do I convert square kilometers to rais?

Multiply the square kilometer value by 625 to get the equivalent in rais.

What is 100 square kilometers in rais?

100 square kilometers equals 62,500 rais.

Is a square kilometer bigger than a rai?

Yes. 1 square kilometer equals 625 rais, so one square kilometer is larger.

How to convert square kilometers to rais without a calculator?

Multiply by 625 for a quick estimate; use a calculator for precise results.

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Convert square kilometers to rais

🧮 Conversion formula