Map scale — Geography, 7–10
A map makes a large place small, so its scale tells us how map distances match real distances.
Small picture, real distance
A map scale is a promise about size: a short length on paper stands for a longer length on Earth. For example, if 1 centimetre represents 1 kilometre, then 4 centimetres on the map represent 4 kilometres in the real place.
Why do maps need it?
Without a scale, a map could show that one road looks twice as long as another but could not tell us their actual lengths. Travellers, builders and emergency workers need to estimate real distances, even though the whole area has been shrunk to fit on a page or screen.
Measuring a route
A walking map says 1 centimetre equals 500 metres. You measure 6 centimetres from the park to the station: 6 × 500 = 3,000 metres. Since 1,000 metres make 1 kilometre, the route is 3 kilometres; this is an estimate because real roads may bend.
The scale mistake
People often read 1 centimetre as 1 kilometre without checking the map’s scale, because that is a familiar example. Another mistake is to forget the units: 500 metres is not 500 kilometres. Read the scale first, multiply the map length, and then change units only if needed.
Planning a real trip
You can use scale to decide whether a walk is a few minutes or a much longer outing. It also helps compare routes on a park map, estimate how far a cycle ride goes, or understand why a country map cannot show every small street clearly: larger areas need more shrinking.
Keep exploring
Other languages
Loading MyLeoNes™…