# Drafting/Conversion Table of English Linear Measurements into Metric

The metric is now the official system of measurements for sizes and weights in the Philippines. At this writing, however, lumber, shoes, paper, and machine parts are still measured by the English system. Since it will take time to metricize all existing English measurements, the conversion table is provided below to help students adjust themselves to the transition.

The metric equivalent of the English linear measurements are printed in decimal figures and are mostly in fractions of a meter. To read these fractional measurements which are given in decimal figures, it is suggested that the following simple rule be followed:

All numbers at the left side of the decimal point are in meters; the first two numbers to the right of the decimal point are in centimeters; the third number to the right of that is in millimeters; and the rest of the numbers to the right of the third number are a fraction of a millimeter.

For example, 1.016 reads: one meter, one centimeter, and 6 millimeters. Similarly, 5.55525 is read as 5 meters, 55 centimeters, and 5 1/4 millimeters. The last two numbers, or 25, is 1/4 of a millimeter.

To find the equivalent of 3 1/8", for instance, just add the fractional metric equivalent of 1/8" to the metric equivalent of 3 inches. In this case, we have

1/8" = 0.0032 3" = 0.0762 0.0794 which reads: seven centimeters, nine millimeters, and 4/10, or 2/5, of a millimeter

## Table I Inches To Meter

editInch/Inches | Meter | Inches | Meter |
---|---|---|---|

1/32 | 0.0008 | 13 | 0.3202 |

1/16 | 0.0016 | 14 | 0.3556 |

1/8 | 0.0032 | 15 | 0.381 |

3/16 | 0.0047 | 16 | 0.4064 |

1/4 | 0.0063 | 17 | 0.4318 |

5/16 | 0.0079 | 18 | 0.4572 |

3/8 | 0.0095 | 19 | 0.4826 |

7/16 | 0.0112 | 20 | 0.508 |

1/2 | 0.0127 | 21 | 0.5334 |

9/16 | 0.0142 | 22 | 0.5588 |

5/8 | 0.0158 | 23 | 0.5842 |

11/16 | 0.0174 | 24(2'-0") | 0.6096 |

3/4 | 0.019 | 25 | 0.635 |

13/16 | 0.0205 | 26 | 0.6604 |

7/8 | 0.022 | 27 | 0.6858 |

15/16 | 0.0237 | 28 | 0.7112 |

1 | 0.0254 | 29 | 0.7366 |

2 | 0.0508 | 30 | 0.762 |

3 | 0.0762 | 31 | 0.7874 |

4 | 0.1016 | 32 | 0.8128 |

5 | 0.127 | 33 | 0.8382 |

6 | 0.1524 | 34 | 0.8636 |

7 | 0.1778 | 35 | 0.889 |

8 | 0.2032 | 36(3'-0") | 09144 |

9 | 0.2286 | 37 | 0.9398 |

10 | 0.254 | 38 | 0.9652 |

11 | 0.2794 | 39 | 0.9906 |

12(1'-0") | 0.3048 | 40 | 1.016 |

## Table II Feet To Meters

editFeet | Meters | Feet | Meters |
---|---|---|---|

1 | 0.3048 | 14 | 4.2672 |

2 | 0.6096 | 15 | 4.5720 |

3 | 0.9144 | 16 | 4.8768 |

4 | 1.2192 | 17 | 5.1816 |

5 | 1.5240 | 18 | 5.4864 |

6 | 1.8288 | 19 | 5.7912 |

7 | 2.1336 | 20 | 6.0960 |

8 | 2.4384 | 21 | 6.40 |

9 | 2.7432 | 22 | 6.71 |

10 | 3.0480 | 23 | 7.01 |

11 | 3.3528 | 24 | 7.32 |

13 | 3.9624 |

## Table III Inches To Millimeters

editInch/Inches | Millimeters | Inch/Inches | Millimeters |
---|---|---|---|

1/32 | 0.8 | 21/32 | 16.7 |

1/16 | 1.6 | 11/16 | 17.5 |

3/32 | 2.4 | 23/32 | 18.3 |

1/8 | 3.2 | 3/4 | 19.1 |

5/32 | 4.0 | 25/32 | 19.9 |

3/16 | 4.8 | 13/16 | 20.7 |

7/32 | 5.6 | 27/32 | 21.5 |

1/4 | 6.4 | 7/8 | 22.3 |

9/32 | 7.1 | 29/32 | 23.1 |

5/16 | 7.9 | 15/16 | 23.9 |

11/32 | 8.7 | 31/32 | 24.7 |

3/8 | 9.5 | 1 | 25.4 |

13/32 | 10.3 | 2 | 50.8 |

7/16 | 11.1 | 3 | 76.2 |

15/32 | 11.9 | 4 | 101.6 |

1/2 | 12.7 | 5 | 127.0 |

17/32 | 13.5 | 6 | 152.4 |

9/16 | 14.3 | 7 | 177.8 |

19/32 | 15.1 | 8 | 203.2 |

5/8 | 15.9 | 9 | 228.6 |

10 | 254.0 | ||

11 | 279.4 | ||

12 | 304.8 | ||

13 | 320.2 | ||

14 | 355.6 | ||

15 | 381 | ||

16 | 406.4 | ||

17 | 431.8 | ||

18 | 457.2 | ||

19 | 482.6 | ||

20 | 508 | ||

21 | 533.4 | ||

22 | 558.8 | ||

23 | 584.2 | ||

24 | 609.6 |

## Table IV Miscellaneous Lengths

editEnglish | Metric |
---|---|

1 mile | 1.609 kilometers |

1 yard(3 ft) | 0.9144 meter |

3.28 ft | 1 meter |

39.37 inches | 1 meter |

1 inch | 2.54 centimeters |