Length • NIST Exact

Kilometers Li

km → 里

1 km = 2 里NIST Exact

km → 里 Reference Table

km
0.01 km 0.02 里
0.1 km 0.2 里
0.5 km 1 里
1 km 2 里
2 km 4 里
5 km 10 里
10 km 20 里
20 km 40 里
50 km 100 里
100 km 200 里
500 km 1000 里
1000 km 2000 里

Values based on NIST SP 811 conversion factors

🌍 Real-World Examples

One kilometer in li

1 km = 2 里

5 km jogging distance

5 km = 10 里

Half a kilometer (one li)

0.5 km = 1 里

Why Convert Kilometers to Li?

Converting between kilometers (km) and li (里) is one of the most common length conversions. Whether for engineering, cooking, travel, or science, knowing how to quickly convert km to 里 saves time and prevents errors.

Length conversions between km and 里 are essential in international travel, construction, and sports. Airline carry-on luggage limits are typically defined in centimeters (55×40×20 cm), but US travelers think in inches. Architects and contractors regularly convert between metric and imperial measurements when working on international projects. In athletics, track distances may be in meters while road races use miles or kilometers.

How to Convert Kilometers to Li

To convert kilometers to li, use the following formula:

里 = km × 2

Example: 1 km = 2 里

For example, 5 km = 10 里, 10 km = 20 里, and 100 km = 200 里. Our calculator above performs this conversion instantly with full precision — no rounding errors.

Common Use Cases

  • One kilometer in li: 1 km = 2 里
  • 5 km jogging distance: 5 km = 10 里
  • Half a kilometer (one li): 0.5 km = 1 里

Common Mistakes to Avoid

  • Confusing similar units: Don't mix up meters (m) with miles (mi) — they differ by a factor of ~1600. Always check the unit symbol.
  • Rounding too early: When converting km to 里, carry at least 4 decimal places in intermediate calculations to avoid compounding errors.
  • Forgetting unit labels: Always write the unit symbol after the number. "5.5" is ambiguous — "5.5 里" is clear.

Pro Tips

  • Memorize the factor: 1 km = 2 里. For quick mental math, remember this base conversion.
  • Quick reference: 5 km = 10 里 · 10 km = 20 里 · 25 km = 50 里 · 50 km = 100 里 · 100 km = 200 里
  • Bookmark this page: Save this converter for instant access. It works offline once loaded — no internet needed.

Kilometers to Li Conversion Table

km
0.01 km0.02 里
0.1 km0.2 里
0.5 km1 里
1 km2 里
2 km4 里
5 km10 里
10 km20 里
20 km40 里
50 km100 里
100 km200 里
500 km1000 里
1000 km2000 里

All values in this table are mathematically exact per NIST SP 811.

Frequently Asked Questions

How many li are in 1 kilometer?

1 km equals 2 里. This is an exact conversion factor defined by NIST.

How do I convert kilometers to li?

Multiply the value in km by the conversion factor. For example, 10 km = 20 里. Use our calculator above for instant results.

Is the kilometers to li conversion exact?

Yes, this conversion is mathematically exact based on the international definition of these units (NIST SP 811).

Length More Conversions