Topographic map guide
1:10,000 vs 1:25,000 vs 1:50,000 Map Scales
The key difference between 1:10,000, 1:25,000 and 1:50,000 is how much ground fits on the same sheet and how large map features appear physically. A smaller denominator means a larger map scale.
Direct comparison
| Scale | 1 cm | 4 cm | 10 cm |
|---|---|---|---|
| 1:10,000 | 100 m | 400 m | 1 km |
| 1:25,000 | 250 m | 1 km | 2.5 km |
| 1:50,000 | 500 m | 2 km | 5 km |
1:10,000
This is the largest of the three scales. It covers the smallest area on the same sheet, while roads, contours, grid lines and symbols occupy more physical space.
Printing a source at a larger scale does not create detail that does not exist in the underlying map data. Source resolution and cartographic generalisation remain separate issues.
1:25,000
At 1:25,000, one centimetre equals 250 metres and one kilometre occupies 4 cm on paper. It provides wider coverage than 1:10,000 while keeping many terrain features comfortably readable.
1:50,000
At 1:50,000, one centimetre equals 500 metres and one kilometre occupies 2 cm. The same sheet can cover substantially more ground, but small features are physically more compact.
What happens to a 5 km distance?
| Scale | 5 km on the map |
|---|---|
| 1:10,000 | 50 cm |
| 1:25,000 | 20 cm |
| 1:50,000 | 10 cm |
How UTM grid spacing looks
A 1 km ground interval appears as 10 cm at 1:10,000, 4 cm at 1:25,000 and 2 cm at 1:50,000. Dense grid lines can therefore become visually crowded at smaller scales.
If you are deciding which scale to use, see How to Choose a Map Scale.
Create your own map: choose an area, scale, paper size and coordinate grid in TopograpMaps.
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