Marks Calc
Back to Blog
Updated
4 min read
Inches, Centimeters, Conversion, Screen Size, Clothing, DIY

Inches to cm: The Complete Conversion Table for Screen Sizes, Clothing, and DIY

Inches to cm: The Complete Conversion Table for Screen Sizes, Clothing, and DIY

Your TV is 55 inches. Your phone screen is 6.7 inches. Your jeans are 32-inch waist. But Indian clothing labels use cm, Indian rooms are measured in feet, and your carpenter works in inches. Here's every conversion in one place.

The Formula

1 inch = 2.54 cm (exactly)

cm = inches ร— 2.54

| Inches | cm | Common Use | |--------|-----|-----------| | 1" | 2.54 cm | Thumb width | | 5" | 12.7 cm | Phone screen (small) | | 6" | 15.24 cm | Phone screen (medium) | | 7" | 17.78 cm | Tablet screen | | 10" | 25.4 cm | iPad screen | | 15" | 38.1 cm | Laptop screen | | 24" | 61.0 cm | Desktop monitor | | 32" | 81.3 cm | Small TV | | 43" | 109.2 cm | Medium TV | | 55" | 139.7 cm | Large TV | | 65" | 165.1 cm | Very large TV |

The Trench Truth: TV screen sizes are measured diagonally, not width. A "55-inch TV" has a 55-inch diagonal โ€” the actual width is about 47.9 inches (121.7 cm) and height about 27 inches (68.6 cm). When measuring if a TV fits your wall or cabinet, don't use the screen size โ€” use the actual width and height dimensions from the spec sheet. A 55" TV is wider than 55 inches would suggest if you're thinking in horizontal terms.

๐Ÿ“Š Screen Size Reference

โ”Œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”
โ”‚        TV SCREEN SIZES: ACTUAL DIMENSIONS                     โ”‚
โ”œโ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”ค
โ”‚                                                               โ”‚
โ”‚  32" TV:  70 ร— 39 cm   โ€” Small bedroom                      โ”‚
โ”‚  โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ                                       โ”‚
โ”‚                                                               โ”‚
โ”‚  43" TV:  95 ร— 53 cm   โ€” Medium bedroom                     โ”‚
โ”‚  โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ                        โ”‚
โ”‚                                                               โ”‚
โ”‚  55" TV:  122 ร— 68 cm  โ€” Living room standard               โ”‚
โ”‚  โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ   โ”‚
โ”‚                                                               โ”‚
โ”‚  65" TV:  144 ร— 81 cm  โ€” Large living room                  โ”‚
โ”‚  โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ โ”‚
โ”‚                                                               โ”‚
โ”‚  75" TV:  166 ร— 94 cm  โ€” Home theater                       โ”‚
โ”‚  โ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆโ–ˆ โ”‚
โ”‚                                                               โ”‚
โ”‚  Viewing distance:                                            โ”‚
โ”‚  32" โ†’ 1.2-2m    43" โ†’ 1.5-2.5m                             โ”‚
โ”‚  55" โ†’ 2-3m      65" โ†’ 2.5-3.5m    75" โ†’ 3-4.5m           โ”‚
โ”‚                                                               โ”‚
โ””โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”€โ”˜

Clothing Size Conversions

๐Ÿ“Š Waist Size

| Inches | cm | India Size | US Size | |--------|-----|-----------|---------| | 28" | 71 cm | S | 28 | | 30" | 76 cm | M | 30 | | 32" | 81 cm | L | 32 | | 34" | 86 cm | XL | 34 | | 36" | 91 cm | XXL | 36 | | 38" | 97 cm | 3XL | 38 | | 40" | 102 cm | 4XL | 40 |

๐Ÿ“Š Shirt/Chest Size

| Inches | cm | India Size | International | |--------|-----|-----------|--------------| | 36" | 91 cm | S | S | | 38" | 97 cm | M | M | | 40" | 102 cm | L | L | | 42" | 107 cm | XL | XL | | 44" | 112 cm | XXL | XXL |

Key Takeaways

  • 1 inch = 2.54 cm exactly โ€” no approximation needed
  • TV sizes are diagonal โ€” a 55" TV is 122cm wide, not 140cm
  • Indian clothing uses both inches and cm โ€” always check the label
  • Phone screens are measured diagonally โ€” same as TVs
  • Convert any measurement: Length Converter | Weight Converter | Temperature Converter

Related articles: Meters to Feet | kg to lbs Guide | Celsius to Fahrenheit

Frequently Asked Questions

Is 1 inch exactly 2.54 cm? Yes, by international definition since 1959. Unlike other conversions that are approximate, the inch-to-cm relationship is exact: 1 inch = 2.54 cm, no rounding needed.

Are TV screen sizes measured in width or diagonal? Diagonal. A "55-inch TV" has a 55-inch diagonal measurement. The actual width is about 48 inches (122 cm) and height about 27 inches (69 cm). Always check the spec sheet for actual dimensions.

How do I convert clothing sizes between inches and cm? Most Indian brands list both. Waist in inches รท 2.54 = cm. Chest in inches รท 2.54 = cm. A 32-inch waist = 81.3 cm. International brands may use different sizing โ€” always check the specific brand's chart.

Why does India use both inches and cm? Historical legacy. Before metrication (1958), India used imperial units. Inches persist in clothing, screen sizes, and carpentry. Cm is used in medical records, passports, and official documents. Both systems coexist.

What's the easiest mental math for inches to cm? Multiply by 2.5 (instead of 2.54) for a quick estimate. 10 inches ร— 2.5 = 25 cm (actual: 25.4 cm). The error is only 1.6% โ€” close enough for everyday use.

Sources: NIST Handbook 44, Display Specifications (various manufacturers), Indian Bureau of Standards Clothing Size Charts.

Ready to Calculate?

Discussion

Loading comments...