Conversion Tables

Formulas

CalculateFormula
CircumferenceDiameter X 3.1416
DiameterRadius X 2
Area of CircleDiameter X Diameter X 0.7854
Area of Square/RectangleLength X Width
Diagonal of SquareSide X 1.4142
Diagonal of RectangleSquare Root of sum of squares of W & L
Area of TriangleBase X 1/2 of Perpendicular Height
Radius of ArcLength / (Degrees X 0.01745)
Volume of CubeWidth X Height X Length
Volume of CylinderLength X Area of Base
Gallon Capacity of CylinderDiameter X Diameter X Length X 0.0034

Conversion Multipliers

FromToMultiply By
InchesMillimeters25.4
Square InchesSquare Feet0.00694
Square FeetSquare Inches144
Cubic InchesCubic Feet0.00058
Cubic FeetCubic Inches1728
Cubic InchesGallons0.00433
GallonsCubic Inches231
GallonsPounds of Water8.33
Inches of WaterPounds per Sq. ft5.2
Short TonsPounds2000

Decimal to MM

FractionDecimalMM
1/640.0160.396
1/320.0310.793
3/640.0471.190
1/160.0.631.587
5/640.0781.984
3/320.0942.381
7/640.1092.778
1/80.1253.175
9/640.1413.571
5/320.1563.968
11/640.1724.365
3/160.1884.762
13/640.2035.159
7/320.2195.556
15/640.2345.953
1/40.2506.350
17/640.2666.746
9/320.2817.143
19/640.2977.540
5/160.3137.937
21/640.3288.334
11/320.3448.731
23/640.3599.128
3/80.3759.525
25/640.3289.921
13/320.40610.318
27/640.42210.715
7/160.43811.112
29/640.45311.509
15/320.46911.906
31/640.48412.303
1/20.50012.700
33/640.51613.096
17/320.53113.493
35/640.54713.890
9/160.56314.287
37/640.57814.684
19/320.59415.081
39/640.60915.478
5/80.62515.875
41/640.64116.271
21/320.65616.668
43/640.67217.065
11/160.68817.462
45/640.70317.859
23/320.71018.256
47/640.73418.653
3/40.75019.050
49/640.76619.446
25/320.78119.843
51/640.79720.240
13/160.81320.637
53/640.82821.034
27/320.84421.431
55/640.85921.828
7/80.87522.225
57/640.89122.621
29/320.90623.018
59/640.92223.415
15/160.93823.812
61/640.95324.209
31/320.96924.606
63/640.98425.003
11.0025.400