Convert Tsubo to Square Nanometers
Convert Tsubo (坪) to Square Nanometers (nm²) instantly and accurately.
Conversion Formula
nm² = 坪 × 3.305785124e+18
About Tsubo
A tsubo (坪) is the traditional Japanese unit of floor area, equal to 400/121 m² (approximately 3.306 m²) - defined as the footprint of two tatami mats placed side by side. It has been the standard for measuring rooms and apartments in Japan for centuries and remains widely used in real estate and architecture today. Apartment sizes in Japan are routinely quoted in tsubo alongside square meters. One tsubo equals approximately 35.58 square feet or 3.95 square yards.
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
| Tsubo (坪) | Square Nanometers (nm²) |
|---|---|
| 1 坪 | 3.306 × 1018 nm² |
| 2 坪 | 6.612 × 1018 nm² |
| 5 坪 | 1.653 × 1019 nm² |
| 10 坪 | 3.306 × 1019 nm² |
| 25 坪 | 8.264 × 1019 nm² |
| 50 坪 | 1.653 × 1020 nm² |
| 100 坪 | 3.306 × 1020 nm² |