40 Inches to Centimetres
40 inches is exactly 101.6 cm.
40 inches = 101.6 cm
Type in either box. Inches also take fractions and feet: 1 1/2, 3/4, 5'7", 5 ft 7 in.
How to convert 40 inches to cm
Multiply by 2.54, the exact number of centimetres in an inch:
40 in × 2.54 = 101.6 cm
No rounding is involved — the inch is defined as 2.54 cm, so 101.6 cm is the exact answer, not an approximation. In millimetres that is 1,016 mm, and in metres 1.016 m.
40-inch TV screen size in cm
Screens are measured across the diagonal, so a 40-inch TV has a 101.6 cm diagonal — the width and height depend on the aspect ratio. Almost every TV is 16:9. These are the visible panel; the bezel and stand add to the overall size.
| Aspect ratio | Width × height (in) | Width × height (cm) |
|---|---|---|
| 16:9 | 34.9 × 19.6 in | 88.6 × 49.8 cm |
40 inches in other units
| Centimetres | 101.6 cm |
| Millimetres | 1,016 mm |
| Metres | 1.016 m |
| Feet and inches | 3 ft 4 in |
| Feet | 3.3333 ft |
Inches to cm near 40
| Inches | Centimetres |
|---|---|
| 24 in | 60.96 cm |
| 27 in | 68.58 cm |
| 32 in | 81.28 cm |
| 36 in | 91.44 cm |
| 40 in | 101.6 cm |
| 43 in | 109.22 cm |
| 50 in | 127 cm |
| 55 in | 139.7 cm |
| 65 in | 165.1 cm |
Need a different value? Type it into the converter above, or go back to the full cm to inches converter.
Frequently asked questions
How many centimetres is 40 inches?
40 inches is exactly 101.6 centimetres. One inch is defined as 2.54 cm, so multiply 40 by 2.54.
How do I estimate 40 inches in cm without a calculator?
Multiply by 2.5, then add a little: 40 × 2.5 = 100, and the exact answer of 101.6 cm is 1.6% higher. For most everyday purposes, 2.5 is close enough.