ExactConverter

Length conversion

42 km to mi

26.098 mi

42 kilometres = 26.098 miles. Exact factor: mi = km ÷ 1.609344.

Live converter

Edit either field — the other updates instantly. Type decimal values like 38.4.

The formula

mi = km ÷ 1.609344

Worked example: 42 × 0.6213711922 = 26.098 mi.

Values near 42 km

km mi
39 24.233
40 24.855
41 25.476
42this page 26.098
43 26.719
44 27.34
45 27.962

Frequently asked

How do you convert kilometres to miles?

Apply the formula mi = km ÷ 1.609344. Enter any value in the live converter above and the result updates as you type.

What is 42 km in mi?

42 km equals 26.098 mi. The reference table below shows the values immediately around 42 km.

Is this conversion exact?

Yes. Consecutive Fibonacci numbers approximate this ratio: 5 km is about 3 miles, 8 km about 5, 13 km about 8.