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Metric Conversions

Millimeters Decimal Inches Approximate Inches on a Ruler Other equivalent measurements
0.25mm 0.010" - 30 gauge (Brown & Sharpe)
0.3mm 0.012" - -
0.32mm 0.013" - 28 gauge (Brown & Sharpe)
0.36mm 0.014" - -
0.41mm 0.016" - 26 gauge (Brown & Sharpe)
0.46mm 0.018" - -
0.51mm 0.020" - 24 gauge (Brown & Sharpe)
0.64mm 0.025" - 22 gauge (Brown & Sharpe)
0.76mm 0.030" - -
0.81mm 0.032" 1/32 Inch 20 gauge (Brown & Sharpe)
1mm 0.039" - 18 gauge (Brown & Sharpe)
1.29mm 0.051" - 16 gauge (Also about the thickness of a US dime)
1.63mm 0.064" 1/16" 14 gauge (Brown & Sharpe)
2mm 0.079" - 12 gauge (Also about the thickness of a US nickel)
2.59mm 0.102" - 10 gauge (Brown & Sharpe)
3mm 0.118" A touch less than 1/8 inch -
4mm 0.157" - -
5mm 0.197" 3/16 Inch -
6mm 0.236" A little less than 1/4 Inch -
7mm 0.276" A little bit more than 1/4 Inch About the diameter of a pencil
8mm 0.315" 5/16 Inch -
9mm 0.354" A little less than 3/8 Inch -
10mm 0.394" A little bit more than 3/8 Inch -
11mm 0.433" 7/16 Inch -
12mm 0.472" A little less than 1/2 Inch About the width of a standard staple
13mm 0.512" A little bit more than 1/2 Inch -
14mm 0.551" 9/16 Inch -
15mm 0.591" A little less than 5/8 Inch -
16mm 0.630" 5/8 Inch -
17mm 0.669" A little less than 11/16 Inch -
18mm 0.709" A little less than 3/4 Inch About the diameter of a US dime
19mm 0.748" A little bit more than 3/4 Inch About the diameter of a US penny
20mm 0.787" A little less than 13/16 Inch -
21mm 0.827" A little bit more than 13/16 Inch About the diameter of a US nickel
22mm 0.866" A little less than 7/8 Inch -
23mm 0.906" A little bit more than 7/8 Inch -
24mm 0.945" 15/16 Inch About the diameter of a US quarter
25mm 0.984" 1 Inch -





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