42 inches at a glance
- Centimeters
- 106.68 cm
- Millimeters
- 1,066.8 mm
- Meters
- 1.0668 m
- Feet & inches
- 3 ft 6 in
- Feet (decimal)
- 3.5 ft
- Nearest whole cm
- 107 cm
How to convert 42 inches to cm
cm = inches × 2.54
42 × 2.54 = 106.68 cm
42 × 2.54 = 106.68 cm
Because the inch is defined as exactly 2.54 cm, 106.68 cm is exact — no rounding involved. To do it in your head, split 2.54 into 2.5 + 0.04: 42 × 2.5 = 105 and 42 × 0.04 = 1.68, which add up to 106.68.
Fractions of an inch around 42 in
Tape measures between 42 and 43 in are marked in eighths. Each eighth adds 3.175 mm:
| Inches | Centimeters | Millimeters |
|---|---|---|
| 42 | 106.68 | 1,066.8 |
| 42 1/8 | 106.9975 | 1,069.975 |
| 42 1/4 | 107.315 | 1,073.15 |
| 42 3/8 | 107.6325 | 1,076.325 |
| 42 1/2 | 107.95 | 1,079.5 |
| 42 5/8 | 108.2675 | 1,082.675 |
| 42 3/4 | 108.585 | 1,085.85 |
| 42 7/8 | 108.9025 | 1,089.025 |
42 inches in real life
- Screens. A 42-inch 16:9 screen (measured diagonally) is 106.7 cm across the diagonal, about 36.6 × 20.6 in (93.0 × 52.3 cm) for the picture itself.
- Clothing. US jeans and trousers are sized by waist and inseam in inches, so a 42 in waist is 106.7 cm around.
Objects of a similar size
- 7% longer than a meter stick, 100 cm (39.37 in).
- 17% longer than a yardstick, 91.44 cm (36 in).
- 40% longer than the height of a typical desk or dining table, 76.2 cm (30 in).
Inches near 42 in
| Inches | Centimeters | Feet & inches / mm |
|---|---|---|
| 37 in | 93.98 cm | 3 ft 1 in |
| 38 in | 96.52 cm | 3 ft 2 in |
| 39 in | 99.06 cm | 3 ft 3 in |
| 40 in | 101.6 cm | 3 ft 4 in |
| 41 in | 104.14 cm | 3 ft 5 in |
| 42 in | 106.68 cm | 3 ft 6 in |
| 43 in | 109.22 cm | 3 ft 7 in |
| 44 in | 111.76 cm | 3 ft 8 in |
| 45 in | 114.3 cm | 3 ft 9 in |
| 46 in | 116.84 cm | 3 ft 10 in |
| 47 in | 119.38 cm | 3 ft 11 in |
Frequently asked questions
How many cm is 42 inches?
42 inches is exactly 106.68 cm, because one inch is defined as 2.54 cm.
What is 42 inches in mm?
42 in = 1,066.8 mm (multiply by 25.4).
How many feet is 42 inches?
42 in is 3.5 feet, or 3 ft 6 in.
Is 42 inches the same as 107 cm?
Not quite: 42 in is 106.68 cm, so 107 cm is 3.2 mm too long — close enough for most everyday measuring.