Centimeters to feet and inches: in short
Divide the centimeters by 30.48 to get feet; the part after the decimal point times 12 gives the inches. 180 cm is 5′ 10⅞″ (5.906 ft), and 400 cm is 13′ 1½″.
Step by step
- Divide the centimeters by 2.54. That gives the total in inches: 180 cm ÷ 2.54 = 70.87 in.
- Divide the inches by 12. The whole number is the feet: 70.87 ÷ 12 = 5, with 10.87 inches left.
- Round the inches to the nearest 1/8 inch, the smallest mark on most US tape measures.
- Write it as feet and inches: 5′ 10⅞″.
Common lengths
| Centimeters | Feet and inches | Decimal feet |
|---|---|---|
| 30 cm | 0′ 11¾″ | 0.984 ft |
| 50 cm | 1′ 7⅝″ | 1.64 ft |
| 100 cm | 3′ 3⅜″ | 3.281 ft |
| 150 cm | 4′ 11″ | 4.921 ft |
| 160 cm | 5′ 3″ | 5.249 ft |
| 165 cm | 5′ 5″ | 5.413 ft |
| 170 cm | 5′ 6⅞″ | 5.577 ft |
| 175 cm | 5′ 8⅞″ | 5.741 ft |
| 180 cm | 5′ 10⅞″ | 5.906 ft |
| 185 cm | 6′ ⅞″ | 6.07 ft |
| 190 cm | 6′ 2¾″ | 6.234 ft |
| 200 cm | 6′ 6¾″ | 6.562 ft |
| 250 cm | 8′ 2⅜″ | 8.202 ft |
| 300 cm | 9′ 10⅛″ | 9.843 ft |
| 400 cm | 13′ 1½″ | 13.123 ft |
| 500 cm | 16′ 4⅞″ | 16.404 ft |
Room sizes from centimeters
The floor area is measured inside the walls, the way you measure a room with a tape. Draw this room opens the same room in the editor, with the same area.
| Room in cm | In feet and inches | Floor area |
|---|---|---|
| 300 × 300 cm | 9′ 10⅛″ × 9′ 10⅛″ | 96.9 sq ft |
| 300 × 400 cm | 9′ 10⅛″ × 13′ 1½″ | 129.2 sq ft |
| 350 × 400 cm | 11′ 5¾″ × 13′ 1½″ | 150.7 sq ft |
| 400 × 500 cm | 13′ 1½″ × 16′ 4⅞″ | 215.3 sq ft |
| 500 × 600 cm | 16′ 4⅞″ × 19′ 8¼″ | 322.9 sq ft |
Why round to 1/8 inch
An eighth of an inch is about 3 mm. Rounding finer than that gives digits nobody can mark on a board or read off a tape. For a height, the nearest inch is enough; for a cut, use the eighths.
Figure 1. One floor of 25 × 17 ft. The rooms add up to 425 sq ft.
About this page · Written by the Squaremetry team. Last checked on October 1, 2026. Found a mistake? Send us a message.