Unit Converter
Convert length, weight, area, volume, temperature, data size, speed, and time from a single number. Covers everyday units like inches and pounds, Japanese units such as tsubo, tatami mats (jo), gō and the Japanese measuring cup, plus the GB vs GiB (1000 vs 1024) distinction.
This tool has been used … times.
1
Convert Inches, Pounds, Tsubo and More at Once
Choose a category, enter a number and the unit it’s in, and every unit in that category is converted at once.
2
Quick Conversions
Jump straight to the conversions people look up most often.
How to Use
- Pick a unit category (Length, Weight, Area, Volume, Temperature, Data Size, Speed, or Time) using the tabs.
- Enter a number and choose the “From unit” — every unit in that category is converted instantly.
- Tap any button under “Quick Conversions” and the page scrolls straight back to the results.
- Use the “Copy” button on any result to copy just that number. Your input is saved automatically and restored the next time you open the tool.
Unit Conversion Charts
Inches to Centimeters (in → cm)
| Inches | cm | Inches | cm |
|---|---|---|---|
| 1 in | 2.54 cm | 7 in | 17.78 cm |
| 2 in | 5.08 cm | 8 in | 20.32 cm |
| 3 in | 7.62 cm | 9 in | 22.86 cm |
| 4 in | 10.16 cm | 10 in | 25.4 cm |
| 5 in | 12.7 cm | 11 in | 27.94 cm |
| 6 in | 15.24 cm | 12 in | 30.48 cm |
Tsubo to Square Meters and Tatami Mats
| Tsubo | m² | Tatami (approx.) |
|---|---|---|
| 1 tsubo | 3.31 m² | about 2.04 jo |
| 2 tsubo | 6.61 m² | about 4.08 jo |
| 3 tsubo | 9.92 m² | about 6.12 jo |
| 5 tsubo | 16.53 m² | about 10.2 jo |
| 10 tsubo | 33.06 m² | about 20.4 jo |
| 20 tsubo | 66.12 m² | about 40.8 jo |
| 30 tsubo | 99.17 m² | about 61.2 jo |
| 50 tsubo | 165.29 m² | about 102 jo |
Fahrenheit to Celsius (°F → °C)
| °F | °C | Reference |
|---|---|---|
| 0 °F | −17.8 °C | Bitter cold |
| 32 °F | 0 °C | Water freezes |
| 50 °F | 10 °C | Chilly |
| 68 °F | 20 °C | Room temperature |
| 86 °F | 30 °C | Hot summer day |
| 98.6 °F | 37 °C | Body temperature |
| 100 °F | 37.8 °C | Slight fever |
| 212 °F | 100 °C | Water boils |
Data Size (Decimal vs Binary)
| Unit | Bytes | In binary units |
|---|---|---|
| 1 KB | 1,000 B | 0.9766 KiB |
| 1 MB | 1,000,000 B | 0.9537 MiB |
| 1 GB | 1,000,000,000 B | 0.9313 GiB |
| 1 TB | 1,000,000,000,000 B | 0.9095 TiB |
| 1 KiB | 1,024 B | 1.024 KB |
| 1 MiB | 1,048,576 B | 1.048576 MB |
| 1 GiB | 1,073,741,824 B | 1.073741824 GB |
| 1 TiB | 1,099,511,627,776 B | 1.0995 TB |
Conversion References
1 inch = 2.54 cmThe international inch. 1 foot = 12 inches = 30.48 cm
1 mile ≈ 1.609 km1 mile = 1,760 yards = 1,609.344 m
1 pound = 453.59237 gThe avoirdupois pound. 1 ounce = 1/16 pound ≈ 28.35 g
1 tsubo = 400/121 m²About 3.3058 m². 1 m² ≈ 0.3025 tsubo — a unit commonly seen in Japanese real estate listings
1 tatami mat (jo) ≈ 1.62 m²A rough estimate used in Japanese real estate; the actual size varies by region and property
1 gō ≈ 180.39 mL1 shō = 10 gō ≈ 1.804 L. In cooking, gō is usually rounded to 180 mL
1 Japanese cup = 200 mLThe standard Japanese measuring cup. 1 tbsp = 15 mL, 1 tsp = 5 mL
°F = °C × 9/5 + 32The Celsius-to-Fahrenheit formula. K (Kelvin) = °C + 273.15
1 GB = 1,000 MB / 1 GiB = 1,024 MiBKB, MB and GB step up by 1000; KiB, MiB and GiB step up by 1024. 1 GB ≈ 0.9313 GiB
1 km/h = 1/3.6 m/sAbout 0.2778 m/s. 1 mph = 1.609344 km/h, 1 knot = 1.852 km/h
1 day = 86,400 seconds1 hour = 3,600 s, 1 week = 604,800 s. A year is converted as 365 days = 31,536,000 s
Frequently Asked Questions
- How do I convert tsubo to square meters?
- 1 tsubo equals 400/121 m² (about 3.3058 m²), and 1 m² is about 0.3025 tsubo. A tatami mat (jo) is estimated at 1.62 m² for this tool, though the actual size varies by region and property type in Japan.
- What’s the formula for converting inches to centimeters?
- Since 1 inch is internationally defined as 2.54 cm, multiply the number of inches by 2.54 to get centimeters. For example, a 27-inch monitor has a diagonal of about 68.58 cm.
- How do I convert Fahrenheit (°F) to Celsius (°C)?
- Celsius = (Fahrenheit − 32) × 5/9. 100°F is about 37.8°C, and 32°F equals 0°C, the freezing point of water.
- How many milliliters are in 1 gō?
- 1 gō is about 180.39 mL, and it’s commonly rounded to 180 mL for cooking or measuring rice. 1 shō = 10 gō ≈ 1.804 L, and the standard Japanese measuring cup holds 200 mL.
- What’s the difference between GB and GiB?
- GB (gigabyte) steps up by 1,000 while GiB (gibibyte) steps up by 1,024. 1 GB is 1,000,000,000 bytes but 1 GiB is 1,073,741,824 bytes — about a 7.4% difference. Drive manufacturers advertise capacity in GB (decimal), while most operating systems report free space in GiB (binary), which is why a 1 TB drive shows up as roughly 931 GB on your computer. The “Data Size” tab lists both side by side.
- What is 100 km/h in meters per second?
- About 27.78 m/s. Divide km/h by 3.6 to get m/s, and multiply m/s by 3.6 to go back. For reference, 1 knot is 1.852 km/h (about 0.5144 m/s) and 1 mph is 1.609344 km/h.
- How many seconds are in a day?
- 86,400 seconds (60 seconds × 60 minutes × 24 hours). An hour is 3,600 seconds, a week is 604,800 seconds, and a year converts to 31,536,000 seconds using 365 days. Leap years and leap seconds are not taken into account, so use a calendar-based tool for exact date arithmetic.