Inch to cm & Pound to kg Converter
＋More features: real TV and monitor dimensions, viewing distance, size comparison
Real dimensions and viewing distance for a TV or monitor
From a screen size in inches (the length of the diagonal), this gives the actual width and height in cm and a comfortable viewing distance (Full HD: height × 3, 4K: height × 1.5).
Comparing the size before and after an upgrade
Puts a number on “how much bigger is 27 inches than 24 inches?”, using the aspect ratio selected above.
Type a number and convert inches to cm (or cm to inches) straight away. It converts pounds and kilograms too. Japan uses the metric system in daily life, but TVs and monitors are still sold by the inch, so this is useful when you are buying an appliance here, ordering clothes from an overseas shop, or reading a weight given in pounds.
How to use
- Enter the value you want to convert and choose the unit it is in.
- Both units appear right below as you type — no button needed.
How it is calculated
- 1 inch = 2.54 cm (the defined value of the international inch — the conversion is exact)
- 1 pound = 0.45359237 kg (the defined value of the international pound)
- Both are the values defined by the international yard and pound agreement of 1959. Results are shown to two decimal places.
| Inches | cm | Pounds | kg | |
|---|---|---|---|---|
| 24 | 60.96 | 1 | 0.45 | |
| 27 | 68.58 | 5 | 2.27 | |
| 32 | 81.28 | 10 | 4.54 | |
| 55 | 139.7 | 45 | 20.41 | |
| 65 | 165.1 | 100 | 45.36 |
Sources (primary information)
- Measurement Act of Japan (Act No. 51 of 1992) — restricts the use of non-metric units for trade and certification in Japan, in Japanese
https://laws.e-gov.go.jp/law/404AC0000000051 (accessed July 18, 2026) - The conversion factors are the values defined by the international agreement of 1959 (1 inch = 25.4 mm, 1 pound = 0.45359237 kg).
Assumptions and notes
- Clothing and shoe sizes (US, UK and so on) are national standards, not inches themselves. Check the maker’s size chart.
- The troy ounce and troy pound used for precious metals are different units from the avoirdupois pound and are not covered here.
Frequently asked questions
How wide is a 65-inch TV in cm?
65 inches is a diagonal of about 165.1 cm, which on a 16:9 screen means a width of about 144 cm and a height of about 81 cm (excluding the bezel). To check whether it fits your space, use the maker’s external dimensions.
Can I convert feet?
Yes — 1 foot is 12 inches, so multiply the feet by 12 and enter the result as inches (for example, 6 feet = 72 inches = 182.88 cm).
How many kg is the “45 lb” plate at the gym?
About 20.4 kg. Overseas plates are typically 45 lb (about 20.4 kg), which is slightly different from the 20 kg plates common in Japan.