How many phones tall is that?
The phone is the most widely held object on Earth and almost exactly 15 cm long, which makes it a surprisingly good ruler.
68 × a smartphone
10 m ÷ 0.147 m = 68.03 phones.
Reference figures are measurements and are rounded; the unit conversion behind them is exact.
| Reference | Size | Yours ÷ theirs | Note |
|---|---|---|---|
| smartphone | 0.147 m | 68× | A typical 6.1-inch handset |
| large phone | 0.16 m | 62.5× | |
| tablet | 0.247 m | 40.5× | |
| laptop | 0.35 m | 28.6× | Closed, front to back |
Worth knowing
- A 6.1-inch phone is 147 mm long — the diagonal in the name is the screen, not the body.
- Stacked flat, about 6 800 phones would reach the top of the Burj Khalifa.
Frequently asked
Why is a 6.1-inch phone only 15 cm long?
Because the inches measure the screen diagonal, not the body. A 6.1-inch diagonal on a 19.5:9 screen is 14.2 cm tall, plus a few millimetres of bezel.
How thick is a phone?
Most are 7.5 to 8.5 mm. Stacked face-to-face rather than end-to-end, you would need about nineteen times as many.