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Miles and Kilometers: Printable Charts & Worksheet

Free printable conversion charts, race distances and a word-problem worksheet with answer key. 1 mile = 1.609344 km exactly.

  Free to print and share in class. A link back is appreciated.

Chart 1 — Miles to kilometers (1–100)

MilesKilometers
1 mi1.61 km
2 mi3.22 km
3 mi4.83 km
4 mi6.44 km
5 mi8.05 km
6 mi9.66 km
7 mi11.27 km
8 mi12.87 km
9 mi14.48 km
10 mi16.09 km
11 mi17.7 km
12 mi19.31 km
13 mi20.92 km
14 mi22.53 km
15 mi24.14 km
16 mi25.75 km
17 mi27.36 km
18 mi28.97 km
19 mi30.58 km
20 mi32.19 km
21 mi33.8 km
22 mi35.41 km
23 mi37.01 km
24 mi38.62 km
25 mi40.23 km
30 mi48.28 km
40 mi64.37 km
50 mi80.47 km
60 mi96.56 km
70 mi112.65 km
80 mi128.75 km
90 mi144.84 km
100 mi160.93 km

Chart 2 — Kilometers to miles (1–100)

KilometersMiles
1 km0.62 mi
2 km1.24 mi
3 km1.86 mi
4 km2.49 mi
5 km3.11 mi
6 km3.73 mi
7 km4.35 mi
8 km4.97 mi
9 km5.59 mi
10 km6.21 mi
11 km6.84 mi
12 km7.46 mi
13 km8.08 mi
14 km8.7 mi
15 km9.32 mi
16 km9.94 mi
17 km10.56 mi
18 km11.18 mi
19 km11.81 mi
20 km12.43 mi
21 km13.05 mi
22 km13.67 mi
23 km14.29 mi
24 km14.91 mi
25 km15.53 mi
30 km18.64 mi
40 km24.85 mi
50 km31.07 mi
60 km37.28 mi
70 km43.5 mi
80 km49.71 mi
90 km55.92 mi
100 km62.14 mi

Chart 3 — Race distances

RaceKilometersMiles
5K5 km3.11 mi
10K10 km6.21 mi
Half marathon21.0975 km13.11 mi
Marathon42.195 km26.22 mi
50K ultra50 km31.07 mi
100-mile ultra160.93 km100 mi

How to teach it

  • The rule: km = miles × 1.609344; miles = km ÷ 1.609344.
  • Estimation: multiply miles by 1.6 (or add 60%); multiply km by 0.6.
  • Fibonacci pattern: 3 → 5, 5 → 8, 8 → 13, 13 → 21 (miles → km) — a fun hook for sequences.
  • Why exact? Since 1959 the yard is defined as 0.9144 m, and a mile is 1,760 yards.

Worksheet — word problems

  1. A road sign in England says London is 45 miles away. How many kilometers is that?
  2. Maya ran a 10K race. How many miles did she run?
  3. A car in Canada is driving at 100 km/h. What is that in mph?
  4. A marathon is 42.195 km. Is that more or less than 26 miles?
  5. Estimate 80 km in miles without a calculator.
  6. A bike trail is 12.5 miles long. How long is it in km?
  7. Which is longer: 5 miles or 8 km?
  8. A plane flies 3,000 miles. How many kilometers?

Answer key

  1. 45 × 1.609344 = 72.42 km
  2. 10 ÷ 1.609344 = 6.21 mi
  3. 100 ÷ 1.609344 = 62.14 mph
  4. 42.195 ÷ 1.609344 = 26.22 mi, so slightly more
  5. 80 × 0.6 ≈ 48 mi (exact 49.71 mi)
  6. 12.5 × 1.609344 = 20.12 km
  7. 5 mi = 8.05 km, so 5 miles is slightly longer
  8. 3,000 × 1.609344 = 4,828 km