Convert Rai to Square Nanometers
Convert Rai (rai) to Square Nanometers (nm²) instantly and accurately.
Conversion Formula
nm² = rai × 1.600000000e+21
About Rai
A rai (ไร่) is the standard Thai unit of land area, defined as exactly 1,600 m² (40 m × 40 m). It is used throughout Thailand for all land measurement - from rice paddies to urban plots and national parks. Thai real estate listings always quote land area in rai, ngan (400 m² = ¼ rai), and talang wah (4 m² = 1 square wah). Thailand's total rice-paddy area is reported in millions of rai. One rai equals approximately 0.395 acres or 0.16 hectares.
About Square Nanometers
A square nanometer (nm²) is an extraordinarily small unit of area - the area of a square with sides just one billionth of a meter. At this scale we measure individual molecules and atomic structures. The cross-section of a DNA double helix is roughly 20 nm², and modern transistor gates in cutting-edge microchips have areas measured in tens of nm². Square nanometers are essential in nanotechnology, semiconductor fabrication, surface chemistry, and scanning-tunnelling microscopy.
Quick Reference Table
| Rai (rai) | Square Nanometers (nm²) |
|---|---|
| 1 rai | 1.6 × 1021 nm² |
| 2 rai | 3.2 × 1021 nm² |
| 5 rai | 8 × 1021 nm² |
| 10 rai | 1.6 × 1022 nm² |
| 25 rai | 4 × 1022 nm² |
| 50 rai | 8 × 1022 nm² |
| 100 rai | 1.6 × 1023 nm² |