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Technical Drawing - Scales Conversion
Enlargement Scales
Convert all drawing measurements to millimetres firstly, then follow shortcut under ratio.
1 : 2
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
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1 : 5
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
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1 : 10
Remove last zero.
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
0.2m |
200 |
20 |
0.3m |
300 |
30 |
0.4m |
400 |
40 |
0.45m |
450 |
45 |
0.5m |
500 |
50 |
0.6m |
600 |
60 |
1m |
1000 |
100 |
1.5m |
1500 |
150 |
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1 : 20
Remove last zero and half.
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
0.2 |
200 |
10 |
0.3 |
300 |
15 |
0.5 |
500 |
25 |
0.6 |
600 |
30 |
1.8 |
1800 |
90 |
2.6 |
2600 |
130 |
3.2 |
3200 |
160 |
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1 : 50
Remove last 2 zeros and double number.
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
0.5m |
500 |
10 |
1m |
1000 |
20 |
1.8m |
1800 |
36 |
2m |
2000 |
40 |
2.5m |
2500 |
50 |
3m |
3000 |
60 |
3.2m |
3200 |
64 |
4m |
4000 |
80 |
5m |
5000 |
100 |
6m |
6000 |
120 |
1 : 100
Remove last 2 zeros.
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
1m |
1000 |
10 |
1.5m |
1500 |
15 |
2m |
2000 |
20 |
2.5m |
2500 |
25 |
3m |
3000 |
30 |
4m |
4000 |
40 |
4.5m |
4500 |
45 |
5m |
5000 |
50 |
6m |
6000 |
60 |
6.5m |
6500 |
65 |
7m |
7000 |
70 |
8m |
8000 |
80 |
10m |
10000 |
100 |
11m |
11000 |
110 |
12m |
12000 |
120 |
12.5m |
12500 |
125 |
13.5m |
13500 |
135 |
14m |
14000 |
140 |
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1 : 200
Remove last 2 zers and half number.
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
2m |
2000 |
10 |
3m |
3000 |
15 |
4m |
4000 |
20 |
5m |
5000 |
25 |
6m |
6000 |
30 |
8m |
8000 |
40 |
11m |
11000 |
55 |
14m |
14000 |
70 |
16m |
16000 |
80 |
20m |
20000 |
100 |
22m |
22000 |
110 |
26m |
26000 |
130 |
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1 : 500
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
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1 : 1000
Straight to milliletres from Distance on Drawing - OR - Remove last 3 zeros if you converted to millimetres.
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
10m |
10000 |
10 |
15m |
15000 |
15 |
20m |
20000 |
20 |
25m |
25000 |
25 |
35m |
35000 |
35 |
45m |
45000 |
45 |
50m |
50000 |
50 |
60m |
60000 |
60 |
65m |
65000 |
65 |
120m |
120000 |
120 |
130m |
130000 |
130 |
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Enlargement Scales
5 : 1
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
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20 : 1
Distance on Drawing |
Distance in Millimetres |
Drawing Measurement |
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