Conversion Tables

At  TJS Steel Supplies it doesn’t matter if you need non-standard sizes or you have an unusual request. With our expertise and range of stock, we can meet all your requirements.

Standard Wire Gauge to Inches and Millimetres..

1 Swg = 0.300” / 7.620mm 16 Swg = 0.064” / 1.626mm
2 Swg = 0.276” / 7.010mm 17 Swg = 0.056” / 1.422mm
3 Swg = 0.252” / 6.401mm 18 Swg = 0.048” / 1.219mm
4 Swg = 0.232” / 5.893mm 19 Swg = 0.040” / 1.016mm
5 Swg = 0.212” / 5.385mm 20 Swg = 0.036” / 0.914mm
6 Swg = 0.192” / 4.877mm 21 Swg = 0.032” / 0.813mm
7 Swg = 0.176” / 4.470mm 22 Swg = 0.028” / 0.711mm
8 Swg = 0.160” / 4.064mm 23 Swg = 0.024” / 0.610mm
9 Swg = 0.144” / 3.658mm 24 Swg = 0.022” / 0.559mm
10 Swg = 0.128” / 3.251mm 25 Swg = 0.020” / 0.508mm
11 Swg = 0.116” / 2.946mm 26 Swg = 0.018” / 0.457mm
12 Swg = 0.104” / 2.642mm 27 Swg = 0.0164” / 0.417mm
13 Swg = 0.092” / 2.337mm 28 Swg = 0.0148” / 0.376mm
14 Swg = 0.080” / 2.032mm 29 Swg = 0.0136” / 0.345mm
15 Swg = 0.072” / 1.829mm< 30 Swg = 0.0124” / 0.315mm

 

Conversions – Inches to Metric (mm)

Inches Metric(mm) Inches Metric(mm)
1/16 1.587 5 5/8 142.874
1/8 3.175 5 3/4 146.049
3/16 4.762 5 7/8 149.223
1/4 6.350 6 152.398
5/16 7.937 6 1/8 155.573
3/8 9.525 6 1/4 158.748
7/16 11.112 6 3/8 161.923
1/2 12.700 6 1/2 165.098
9/16 14.287 6 5/8 168.273
5/8 15.875 6 3/4 171.448
11/16 17.462 6 7/8 174.623
3/4 19.050 7 177.798
13/16 20.637 7 1/8 180.973
7/8 22.225 7 1/4 184.148
15/16 23.812 7 3/8 187.323
1 25.400 7 1/2 190.498
1 1/8 28.574 7 5/8 193.673
1 1/4 31.750 7 3/4 196.848
1 3/8 34.925 7 7/8 200.023
1 1/2 38.100 8 203.198
1 5/8 41.275 8 1/8 206.373
1 3/4 44.450 8 1/4 209.548
1 7/8 47.625 8 3/8 212.723
2 50.799 8 1/2 215.898
2 1/8 53.974 8 5/8 219.073
2 1/4 57.149 8 3/4 222.248
2 3/8 60.324 8 7/8 225.423
2 1/2 63.499 9 228.598
2 5/8 66.674 9 1/8 231.773
2 3/4 69.849 9 1/4 234.948
2 7/8 73.024 9 3/8 238.123
3 76.199 9 1/2 241.298
3 1/8 79.374 9 5/8 244.473
3 1/4 82.549 9 3/4 247.647
3 3/8 85.724 9 7/8 250.822
3 1/2 88.899 10 253.997
3 5/8 92.074 10 1/8 257.172
3 3/4 95.249 10 1/4 260.347
3 7/8 98.424 10 3/8 263.522
4 101.599 10 1/2 266.697
4 1/8 104.774 10 5/8 269.872
4 1/4 107.949 10 3/4 273.074
4 3/8 111.124 10 7/8 276.222
4 1/2 114.300 11 279.397
4 5/8 117.474 11 1/8 282.572
4 3/4 120.649 11 1/4 285.747
4 7/8 123.824 11 3/8 288.922
5 126.999 11 1/2 292.097
5 1/8 130.174 11 5/8 295.272
5 1/4 133.524 11 3/4 298.447
5 3/8 136.797 11 7/8 301.622
5 1/2 139.699 12 304.797

 

Length Formulae

Weight Formulae

To convert Multiply by To convert Multiply by
Inches to centimetres 2.54 Ounces to grams 28.3495
Centimetres to inches 0.3937 Grams to ounces 0.03527
Feet to metres 0.3048 Pounds to grams 453.59
Metres to feet 3.2808 Grams to pounds 0.002204
Yards to metres 0.9144 Pounds to kilograms 0.45359
Metres to yards 1.0936 Kilograms to pounds 2.2046
Miles to kilometres 1.6093 Tons (Long) to kilograms 1016.0469
Kilometres to miles 0.6213 Kilograms to tons (Long) 0.000984

 

N.B. 1 Metric Tons (Tonnes) is equivalent to: 1000 Kilograms or 2204.6 Pounds.

 

Area Formulae

Volume Formulae

To convert Multiply by To convert Multiply by
Sq inches to sq centimetres 6.4516 Cu inches to Cu centimetres 16.387
Sq centimetres to sq inches 0.155 Cu centimetres to Cu inches 0.06102
Sq feet to sq metres 0.0929 Cu feet to Cu metres 0.02831
Sq metres to sq feet 10.7639 Cu metres to Cu feet 35.3147
Sq yards to sq metres 0.8361 Cu yards to Cu metres 0.76455
Sq metres to sq yards 1.1959 Cu metres to Cu yards 1.30795
Sq metres to sq kilometres 2.5899

Capacity Formulae

Sq kilometres to sq miles  0.3861 To convert Multiply by
Acres to hectares 0.4046 Gallons to litres 4.546
Hectares to acres 2.471 Litres to gallons 0.2199

 

The formula to work out the weight in Kg’s of a mild steel sheet or plate:

Example: 2500 x 1250 x 5mmFormula: 2.5 x 1.25 x 5 x 7.856 (g/cm3) = 122.75 Kg’s

For guide purposes only,a formula that takes into consideration the plus tolerances used when producing mild steel sheet or plate:

Example: 2500 x 1250 x 5mmFormula: 2.5 x 1.25 x 8 x 5 = 125 Kg’s

 

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