ตัวแปลงกิโลเมตรเป็นไมล์
Convert kilometers to miles and miles to kilometers instantly. Includes common distance conversions table.
วิธีใช้เครื่องคิดเลขนี้
- ป้อนKilometers
- ป้อนMiles
- คลิกปุ่มคำนวณ
- อ่านผลลัพธ์ที่แสดงด้านล่างเครื่องคิดเลข
Kilometers to Miles Conversion
The conversion factor between kilometers and miles is: 1 kilometer = 0.621371 miles, or equivalently, 1 mile = 1.60934 kilometers.
Quick reference table:
- 5 km = 3.11 miles
- 10 km = 6.21 miles
- 21.1 km (half marathon) = 13.11 miles
- 42.2 km (marathon) = 26.22 miles
- 100 km = 62.14 miles
Quick Mental Math
For a rough conversion without a calculator, multiply km by 0.6 (or divide by 1.6). For slightly better accuracy, use the Fibonacci sequence trick: consecutive Fibonacci numbers approximate the km-to-miles conversion (e.g., 8 km ≈ 5 miles, 13 km ≈ 8 miles).
💡 คุณรู้ไหม?
- The mile was defined by the Romans as "mille passus" — 1,000 double-steps (paces), each roughly 1.48 meters, giving a Roman mile of ~1,480 m.
- The modern international mile was fixed at exactly 1.609344 km in 1959 by agreement between English-speaking nations.
- The marathon distance of 42.195 km (26 miles 385 yards) was standardized at the 1908 London Olympics — the extra 385 yards were added so the race could finish in front of the royal box.
อัปเดตล่าสุด: March 2026
Frequently Asked Questions
Why do some countries use miles and others kilometers?
Most countries adopted the metric system. Only the US, UK (partially), Liberia, and Myanmar still use miles for road distances. The UK uses miles on road signs but kilometers in many other contexts.
How do I convert miles to km?
Multiply miles by 1.60934. Example: 10 miles = 16.09 km.
Is a nautical mile the same as a regular mile?
No. A nautical mile is 1.852 km (1.151 regular miles). It is used in maritime and aviation navigation.