17 inches at a glance
- Centimeters
- 43.18 cm
- Millimeters
- 431.8 mm
- Meters
- 0.4318 m
- Feet & inches
- 1 ft 5 in
- Feet (decimal)
- 1.4167 ft
- Nearest whole cm
- 43 cm
How to convert 17 inches to cm
cm = inches × 2.54
17 × 2.54 = 43.18 cm
17 × 2.54 = 43.18 cm
Because the inch is defined as exactly 2.54 cm, 43.18 cm is exact — no rounding involved. To do it in your head, split 2.54 into 2.5 + 0.04: 17 × 2.5 = 42.5 and 17 × 0.04 = 0.68, which add up to 43.18.
Fractions of an inch around 17 in
Tape measures between 17 and 18 in are marked in eighths. Each eighth adds 3.175 mm:
| Inches | Centimeters | Millimeters |
|---|---|---|
| 17 | 43.18 | 431.8 |
| 17 1/8 | 43.4975 | 434.975 |
| 17 1/4 | 43.815 | 438.15 |
| 17 3/8 | 44.1325 | 441.325 |
| 17 1/2 | 44.45 | 444.5 |
| 17 5/8 | 44.7675 | 447.675 |
| 17 3/4 | 45.085 | 450.85 |
| 17 7/8 | 45.4025 | 454.025 |
17 inches in real life
- Screens. A 17-inch 16:9 screen (measured diagonally) is 43.2 cm across the diagonal, about 14.8 × 8.3 in (37.6 × 21.2 cm) for the picture itself.
Objects of a similar size
- 13% longer than the height of a bowling pin, 38.1 cm (15 in).
- 14% shorter than the length of a typical newborn baby, 50 cm (19.69 in).
- 23% shorter than the 22-inch carry-on length limit on most US airlines, 55.88 cm (22 in).
Inches near 17 in
| Inches | Centimeters | Feet & inches / mm |
|---|---|---|
| 12 in | 30.48 cm | 1 ft |
| 13 in | 33.02 cm | 1 ft 1 in |
| 14 in | 35.56 cm | 1 ft 2 in |
| 15 in | 38.1 cm | 1 ft 3 in |
| 16 in | 40.64 cm | 1 ft 4 in |
| 17 in | 43.18 cm | 1 ft 5 in |
| 18 in | 45.72 cm | 1 ft 6 in |
| 19 in | 48.26 cm | 1 ft 7 in |
| 20 in | 50.8 cm | 1 ft 8 in |
| 21 in | 53.34 cm | 1 ft 9 in |
| 22 in | 55.88 cm | 1 ft 10 in |
Going the other way: 43 cm to inches is 16.93 in.
Frequently asked questions
How many cm is 17 inches?
17 inches is exactly 43.18 cm, because one inch is defined as 2.54 cm.
What is 17 inches in mm?
17 in = 431.8 mm (multiply by 25.4).
How many feet is 17 inches?
17 in is 1.4167 feet, or 1 ft 5 in.
Is 17 inches the same as 43 cm?
Not quite: 17 in is 43.18 cm, so 43 cm is 1.8 mm too short — close enough for most everyday measuring.