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Lengths and Areas vs. Mapping Scales

Convert lengths areas between different mapping scales.

Convert between mapping scales and lengths - feet per inch, inch per mile, meter per centimeter - and areas - acres per square inch, square miles per square inch and square metre per square centimetre.

Lengths and Areas vs. Mapping Scales
Scale 1:XLengthArea
feet/inchinch/milem/cmcm/kmacres/sq. inchsq. miles/sq. inchm2/cm2
1 0.083 63398 0.01 100000 0.00000016 0.0000000002 0.0001
2 0.167 31699 0.02 50000 0.00000064 0.0000000010 0.0004
5 0.417 12680 0.05 20000 0.00000399 0.0000000062 0.0025
10 0.833 6340 0.10 10000 0.00001594 0.0000000249 0.010
20 1.67 3170 0.20 5000 0.000064 0.00000010 0.040
50 4.17 1268 0.50 2000 0.000399 0.00000062 0.250
75 6.25 845 0.75 1333 0.000897 0.00000140 0.563
100 8.33 634 1.0 1000 0.00159 0.0000025 1.00
150 12.5 423 1.5 667 0.00359 0.0000056 2.25
200 16.7 317 2.0 500 0.00638 0.0000100 4.00
250 20.8 254 2.5 400 0.00996 0.0000156 6.25
300 25.0 211 3.0 333 0.0143 0.000022 9.00
400 33.3 158 4.0 250 0.0255 0.000040 16
500 41.7 127 5.0 200 0.0399 0.000062 25
1000 83.3 63 10 100 0.159 0.000249 100

Download and print Mapping Scales Chart

Example - Mapping Scale 1:100

The scale of a drawing is 1:100.

The 1:X factor according the table is 1.0 m/cm. 1 cm in the drawing equals

(1 cm) (1.0 m/cm) = 1 m

in the real.

Example - Mapping Scale 1:10000

The scale of a map is 1:10000.

The 1:X factor according the chart is 0.1 km/cm. 1 cm in the map equals

(1 cm) (0.1 km/cm) = 0.1 km

in the real.

Example - 0.1 miles/inch vs. scale and m/cm

As illustrated in the figure below 0.1 miles/inch corresponds to scale ≈ 1: 6300 and ≈ 63 m/cm.

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