Map Scales

A map scale tells you how a distance on a map relates to the real distance on the ground – commonly written as 1 cm : 5 km, meaning every centimetre on the map represents 5 real kilometres. Reading a map scale correctly is essential for anyone estimating travel distances, planning a hike, or simply understanding how “zoomed in” a map really is.

Finding the Real Distance

Real distance = map distance × scale.

A map has a scale of 1 cm : 20 km. Two towns are 6 cm apart on the map. How far apart are they in real life?

Real distance = 6 × 20 = 120 km.

Finding the Map Scale

Two cities 150 km apart are drawn 5 cm apart on a map. What does 1 cm represent?

Scale = 150 ÷ 5 = 30 km per cm.

Real-Life Application

Hiking and navigation: estimating how far a trail really is.
Road trip planning: judging driving distances from a road atlas.
Geography lessons: comparing the true size of countries shown on a map.

Key Takeaways

A map scale relates a distance on the map to the real distance on the ground.
Multiply the map distance by the scale to find the real distance, and divide to go the other way.
This is the same scaling principle used throughout this section, applied specifically to maps.

Practice: Map Scales

Find the Real Distance