Drawing Scales

Drawings are Not Fitting on SheetsFor sheets where the schedule or drawing does not fit - use multiple sheets with a number at the end, ie. A004-1, A004-2, etc.
For drawings that do not fit on one sheet, place a Key Drawing on the first sheet, then use multiple sheets with a number at the end to complete the series, ie:
A204 - Key Plan, Level 02 (1/8" Scale)
A204-1 - Floor Plan, Level 02 - Part 1 (1/4" Scale)
A204-2 - Floor Plan, Level 02 - Part 2 (1/4" Scale)
A204-3 - Floor Plan, Level 02 - Part 3 (1/4" Scale)
This nomenclature is often represented throughout the docs with a #, so when you see A201-# that would indicate that you use this sheet numbering pattern for that series of drawings.
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Architectural Drawing Scales
Scale
Factor
Decimal
1'=1'-0"
1:1
1.0
6"=1'-0"
1:6
0.5
1-1/2"=1'-0"
1:8
0.125
1"=1'-0"
1:12
0.08333
3/4"=1'-0"
1:16
0.06250
1/2"=1'-0"
1:24
0.41667
3/8"=1'-0"
1:32
0.031250
1/4"=1'-0"
1:48
0.020833
3/16"=1'-0"
1:64
0.015625
1/8"=1'-0"
1:96
0.010417
3/32"=1'-0"
1:128
0.007813
1/16"=1'-0"
1:192
0.005208
1/32"=1'-0"
1:384
0.002604
1/64"=1'-0"
1:768
0.001302
1/128"=1'-0"
1:1536
0.000651
Engineering Drawing Scales
Scale
Factor
Decimal
1"=10'
1:120
0.008333
1"=20'
1:240
0.004167
1"=30'
1:360
0.002778
1"=40'
1:480
0.002083
1"=50'
1:600
0.001667
1"=60'
1:720
0.001389
1"=70'
1:840
0.001190
1"=80'
1:960
0.001042
1"=90'
1:1080
0.000926
1"=100'
1:1200
0.000833
1"=150'
1:1800
0.000555
1"=200'
1:2400
0.000416
1"=300'
1:3600
0.000277
1"=400'
1:4800
0.000208
1"=500'
1:6000
0.000166
Unit Conversion Chart (mm / pt / in / ft)
mm
pt
Inches (fraction)
Inches (decimal)
mm
pt
Inches (fraction)
Inches (decimal)
0.35
1
—
0.0139
9.88
28
—
0.3889
0.3969
1.12
1/64
0.0156
10
28.35
—
0.3937
0.7938
2.25
1/32
0.0313
11.29
32
—
0.4445
1.5875
4.5
1/16
0.0625
12.7
36
1/2
0.5000
2.3813
6.75
3/32
0.0938
15.8750
45
5/8
0.6250
3.18
9
1/8
0.1250
19.0500
54
3/4
0.7500
4.76
13.5
3/16
0.1875
22.23
63
7/8
0.8750
6.35
18
1/4
0.2500
25.4
72
1"
1.0000
9.5250
27
3/8
0.3750
mm
m
Inches
Feet
304.8
0.304
12
1'
609.6
0.609
24
2'
914.4
0.914
36
3'
1219.2
1.219
48
4'
1524
1.524
60
5'
1828.8
1.828
72
6'
Text Height Chart — Imperial
Drawing Scale
Factor
3/32" text
1/8" text
3/16" text
1/4" text
1/32"=1'-0"
384
36"
48"
72"
96"
1/16"=1'-0"
192
18"
24"
36"
48"
3/32"=1'-0"
128
12"
16"
24"
32"
1/8"=1'-0"
96
9"
12"
18"
24"
3/16"=1'-0"
64
6"
8"
12"
16"
1/4"=1'-0"
48
4-1/2"
6"
9"
12"
3/8"=1'-0"
32
3"
4"
6"
8"
1/2"=1'-0"
24
2-1/4"
3"
4-1/2"
6"
3/4"=1'-0"
16
1-1/2"
2"
3"
4"
1"=1'-0"
12
1-1/8"
1-1/2"
2-1/4"
3"
1-1/2"=1'-0"
8
3/4"
1"
1-1/2"
2"
3"=1'-0"
4
3/8"
1/2"
3/4"
1"
6"=1'-0"
2
3/16"
1/4"
3/8"
1/2"
Text Height Chart — Metric
Drawing Scale
Factor
2.0 mm
2.5 mm
3.0 mm
3.5 mm
6.0 mm
1:500
500
1000 mm
1250 mm
1500 mm
1750 mm
3000 mm
1:400
400
800 mm
1000 mm
1200 mm
1400 mm
2400 mm
1:300
300
600 mm
750 mm
900 mm
1050 mm
1800 mm
1:200
200
400 mm
500 mm
600 mm
700 mm
1200 mm
1:100
100
200 mm
250 mm
300 mm
350 mm
600 mm
1:60
60
120 mm
150 mm
180 mm
210 mm
360 mm
1:50
50
100 mm
125 mm
150 mm
175 mm
300 mm
1:40
40
80 mm
100 mm
120 mm
140 mm
240 mm
1:30
30
60 mm
75 mm
90 mm
105 mm
180 mm
1:20
20
40 mm
50 mm
60 mm
70 mm
120 mm
1:10
10
20 mm
25 mm
30 mm
35 mm
60 mm
1:5
5
10 mm
12.5 mm
15 mm
17.5 mm
30 mm
#drafting #scales #reference