JavaScript®
Electronic
Notebooks
Conversion Tables

Below is a group of conversion tables. These are pretty standard tables that you might find in any engineering reference book. The charts have been enhances so that, as you run your cursor across the conversion chart, the measurement under the cursor is highlighted in RED. The highlighted measurement is also written in to the cell at the top-right of the chart.

- Conversion table for converting Decimal Feet (e.g. 0.45') to Inches and Fractions of an Inch (e.g. 00.45' = 5-3/8" = 00.137m). The default resolution is 1/16". However the resolution can be changed by using the dropdown selector at the top-center of the chart. Resolutions are limited to 1/8", 1/16", and 1/32". The chart handles measurements from 0.00' to 0.99', in increments of 0.01'.

- Conversion table for converting a measurement in Inches-Fractions of an Inch (e.g. 4-3/8") to Decimal Feet and Meters (e.g. 4-3/8" = 00.365' = 00.1113m). The chart handles measurements from 0-0" to 11-7/8" in 1/8" increments.

- Conversion table for converting Fractions of an Inch ( 0 to 1 inch in 1/64" increments) to Decimal Inchs and milimeters (e.g. 25/64" = 00.3906" = 9.922 mm). The chart handles 0" to 1" in 1/64" increments.

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Conversion, Decimal Feet to Inches

Conversion, Decimal Feet to Inches Nearest
  Decimal Increments
 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09
0.0 x x x x x x x x x x
0.1 x x x x x x x x x x
0.2 x x x x x x x x x x
0.3 x x x x x x x x x x
0.4 x x x x x x x x x x
0.5 x x x x x x x x x x
0.6 x x x x x x x x x x
0.7 x x x x x x x x x x
0.8 x x x x x x x x x x
0.9 x x x x x x x x x x

Conversion, Inches and Fractions to Decimal Feet

Conversion, Inches - Fractions to Decimal Feet
  Fractional Increments
  0 1/8 1/4 3/8 1/2 5/8 3/4 7/8
0- x x x x x x x x
1- x x x x x x x x
2- x x x x x x x x
3- x x x x x x x x
4- x x x x x x x x
5- x x x x x x x x
6- x x x x x x x x
7- x x x x x x x x
8- x x x x x x x x
9- x x x x x x x x
10- x x x x x x x x
11- x x x x x x x x

Conversion, Fractions of an Inch with Metric Equivalants

Fractions of an Inch with Metric Equivalants
Fractions
of an inch		 Decimals
of an inch		 Millimeters Fractions
of an inch		 Decimals
of an inch		 Millimeters Fractions
of an inch		 Decimals
of an inch		 Millimeters Fractions
of an inch		 Decimals
of an inch		 Millimeters
1/64 x x 17/64 x x 33/64 x x 49/64 x x
1/32 x x 9/32 x x 17/32 x x 25/32 x x
3/64 x x 19/64 x x 35/64 x x 51/64 x x
1/16 x x 5/16 x x 9/16 x x 13/16 x x
5/64 x x 21/64 x x 37/64 x x 53/64 x x
3/32 x x 11/32 x x 19/32 x x 27/32 x x
7/64 x x 23/64 x x 39/64 x x 55/64 x x
1/8 x x 3/8 x x 5/8 x x 7/8 x x
9/64 x x 25/64 x x 41/64 x x 57/64 x x
5/32 x x 13/32 x x 21/32 x x 29/32 x x
11/64 x x 27/64 x x 43/64 x x 59/64 x x
3/16 x x 7/16 x x 11/16 x x 15/16 x x
13/64 x x 29/64 x x 45/64 x x 61/64 x x
7/32 x x 15/32 x x 31/32 x x 23/32 x x
15/64 x x 31/64 x x 47/64 x x 63/64 x x
1/4 x x 1/2 x x 3/4 x x 1 x x

Machine Screw Dimensions

  Tap Drill† Head
Screw Threads/Inch Clearance Drill* Diameter Round Flat Fillister Hex Nut Washer
No. Diam.   Coarse Fine   No. Diam.   No. Inches mm Max
OD		 Max
Height		 Max
OD		 Max
OD		 Max
Height		 Across
Flat		 Across
Corner		 Thick-
ness		 OD ID Thick-
ness
00.060 —80 520.064 560.0471.2 0.1130.053 0.119 0.0960.059 0.1560.1710.046 ———
10.073 6472 470.079 530.0601.5 0.1380.061 0.146 0.1180.070 0.1560.1710.046 ———
20.086 5664 420.094 500.0701.8 0.1620.070 0.172 0.1400.083 0.1870.2050.062 ¼0.0930.032
3 0.099 48 — 37 0.104 47 0.079 2.0 0.187 0.078 0.199 0.161/td> 0.095 0.187 0.205 0.062 ¼ 0.105 0.020
— 56 45 0.082 2.1
4 0.112 40 — 31 0.120 43 0.089 2.3 0.1620.070 0.172 0.1400.083 0.1870.2050.062 1/40.0930.032
— 48 42 0.094 2.4
5 0.125 40 — 38 0.136 38 0.102 2.6 0.1620.070 0.172 0.1400.083 0.1870.2050.062 1/40.0930.032
— 44 370.1042.6
6 0.138 32 — 27 0.144 36 0.107 2.7 0.1620.070 0.172 0.1400.083 0.1870.2050.062 1/40.0930.032
— 40 330.1132.9
8 0.164 32 — 18 0.170 29 0.136 3.5 0.1620.070 0.172 0.1400.083 0.1870.2050.062 1/40.0930.032
— 36 290.1363.5
10 0.190 24 — 9 0.196 25 0.150 3.8 0.1620.070 0.172 0.1400.083 0.1870.2050.062 1/40.0930.032
— 32 210.1594.0
12 0.216 24 — 2 0.221 16 0.177 4.5 0.1620.070 0.172 0.1400.083 0.1870.2050.062 1/40.0930.032
— 28 140.1824.6
1/4 0.250 20 — — 17/64 7 0.201 5.1 0.1620.070 0.172 0.1400.083 0.1870.2050.062 1/40.0930.032
— 28 30.2135.5

All dimensions in inches except where noted.
* - Clearance-drill sizes are practical values for use of the engineer or technician doing his own shop work.
† - Tap-drill sizes are for use in hand tapping material such as brass or soft steel. For copper, aluminum, Norway iron, cast iron, bakelite, or for very thin material, the drill should be a size or two larger in diameter than shown.