Ping (坪) to square feet
Convert ping (坪) to square feet. One ping is 35.58 sq ft — the number for comparing Taiwanese and Hong Kong property.
Runs in your browser
The formula
square feet = ping × 35.583175One ping is 400/121 m², and one square foot is exactly 0.09290304 m², so the ratio is 35.5831749313… — a rounding, since the two definitions do not divide evenly.
The number this page exists for
1 坪 = 35.58 平方呎. That is the only figure needed to read a Hong Kong listing in Taiwanese terms, or the reverse. Taiwan quotes property in ping; Hong Kong, Singapore, the United States and Canada quote it in square feet.
| Ping | Square feet |
|---|---|
| 1 坪 | 35.6 ft² |
| 5 坪 | 177.9 ft² |
| 10 坪 | 355.8 ft² |
| 15 坪 | 533.7 ft² |
| 20 坪 | 711.7 ft² |
| 25 坪 | 889.6 ft² |
| 30 坪 | 1067.5 ft² |
| 40 坪 | 1423.3 ft² |
| 50 坪 | 1779.2 ft² |
And the reverse, at the sizes Hong Kong listings actually use:
| Square feet | Ping | Square metres |
|---|---|---|
| 300 ft² | 8.4 坪 | 27.9 m² |
| 400 ft² | 11.2 坪 | 37.2 m² |
| 500 ft² | 14.1 坪 | 46.5 m² |
| 600 ft² | 16.9 坪 | 55.7 m² |
| 800 ft² | 22.5 坪 | 74.3 m² |
| 1000 ft² | 28.1 坪 | 92.9 m² |
| 1500 ft² | 42.2 坪 | 139.4 m² |
A 1000 sq ft Hong Kong flat and a 28 ping Taipei apartment are the same floor area.
But they are not measuring the same thing
Both markets quote an area that includes more than the floor you walk on, and they do it differently:
| Taiwan | Hong Kong | |
|---|---|---|
| Headline figure | 權狀坪數 (registered) | saleable area, since 2013 |
| Includes common areas | yes — the 公設比, often 30%+ | no, since the 2013 rules |
| Includes internal walls | yes | yes |
| Older listings | same | gross floor area, 20–30% larger |
So a Taipei 30 ping with a 32% 公設比 has about 20.4 ping of private space — 726 sq ft — while a Hong Kong 1000 sq ft quoted as saleable area is closer to 1000 sq ft of private space. The raw conversion says they are 1068 and 1000 square feet; the honest comparison says the Hong Kong flat is larger.
Pre-2013 Hong Kong listings quoting gross floor area are the other way round, and are the reason the saleable-area rule exists.
Related conversions
| Unit | Square feet |
|---|---|
| 1 坪 | 35.58 ft² |
| 1 m² | 10.76 ft² |
| 1 甲 | 104,401 ft² |
| 1 hectare | 107,639 ft² |
| 1 acre | 43,560 ft² |
See square feet to square metres and ping to square metres.
Estimating in your head
Multiply by 36 and take off a little, or multiply by 35 and add 2%. 30 ping × 36 is 1080 against a true 1067.5 — about 1.2% high, which is close enough to compare two listings and not close enough to plan a floor.