Pipe Tools & Calculators
Kelly ResourcesMetric Conversion Tables
| PIPE SIZE METRIC CONVERSION TABLE | |||
|---|---|---|---|
| DIAMETER | |||
| NOMINAL SIZE | OD | ||
| mm | Inches | mm | Inches |
| 3 | 1/8 | 10.3 | .405 |
| 6 | 1/4 | 13.7 | .540 |
| 10 | 3/8 | 17.1 | .675 |
| 13 | 1/2 | 21.3 | .840 |
| 19 | 3/4 | 26.7 | 1.050 |
| 25 | 1 | 33.4 | 1.315 |
| 32 | 1 1/4 | 42.2 | 1.660 |
| 40 | 1 1/2 | 48.3 | 1.900 |
| 50 | 2 | 60.3 | 2.375 |
| 65 | 2 1/2 | 73.0 | 2.875 |
| 80 | 3 | 88.9 | 3.500 |
| 90 | 3 1/2 | 101.6 | 4.000 |
| 100 | 4 | 114.3 | 4.500 |
| 125 | 5 | 141.3 | 5.563 |
| 150 | 6 | 168.3 | 6.625 |
| 200 | 8 | 219.1 | 8.625 |
| 250 | 10 | 273.0 | 10.750 |
| 300 | 12 | 323.8 | 12.750 |
| 350 | 14 | 355.6 | 14.000 |
| 400 | 16 | 406.4 | 16.000 |
| 460 | 18 | 457.2 | 18.000 |
| 510 | 20 | 508.0 | 20.000 |
| 560 | 22 | 558.8 | 22.000 |
| 610 | 24 | 609.6 | 24.000 |
| 660 | 26 | 660.4 | 26.000 |
| Standard to Metric Conversion Chart | ||||
|---|---|---|---|---|
| SYMBOL | WHEN YOU KNOW | MULTIPLY BY | TO FIND | SYMBOL |
| LENGTH | ||||
| in | inches | 25.4 | millimeters | mm |
| ft | feet | 0.305 | meters | m |
| yd | yards | 0.914 | meters | m |
| mi | miles | 1.61 | kilometers | km |
| AREA | ||||
| in2 | square inches | 645.2 | square millimeters | mm2 |
| ft2 | square feet | 0.093 | square meters | m2 |
| yd2 | square yard | 0.836 | square meters | m2 |
| ac | acres | 0.405 | hectares | ha |
| mi2 | square miles | 2.59 | square kilometers | km2 |
| VOLUME | ||||
| fl oz | fluid ounces | 29.57 | milliliters | mL |
| gal | gallons | 3.785 | liters | L |
| ft3 | cubic feet | 0.028 | cubic meters | m3 |
| yd3 | cubic yards | 0.765 | cubic meters | m3 |
| MASS | ||||
| oz | ounces | 28.35 | grams | g |
| lb | pounds | 0.454 | kilograms | kg |
| T | short tons (2000 lb) | 0.907 | megagrams (or “metric ton”) | Mg (or “t”) |
| TEMPERATURE | ||||
| oF | Fahrenheit | (F-32) x 5 / 9 or (F-32) / 1.8 |
Celsius | oC |
| ILLUMINATION | ||||
| fc | foot-candles | 10.76 | lux | lx |
| fl | foot-Lamberts | 3.426 | candela/m2 | cd/m2 |
| FORCE and PRESSURE or STRESS | ||||
| lbf | poundforce | 4.45 | newtons | N |
| lbf/in2 | poundforce per square inch | 6.89 | kilopascals | kPa |
| Metric to Standard Conversions | ||||
|---|---|---|---|---|
| SYMBOL | WHEN YOU KNOW | MULTIPLY BY | TO FIND | SYMBOL |
| LENGTH | ||||
| mm | millimeters | 0.039 | inches | in |
| m | meters | 3.28 | feet | ft |
| m | meters | 1.09 | yards | yd |
| km | kilometers | 0.621 | miles | mi |
| AREA | ||||
| mm2 | millimeters | 0.0016 | square inches | in2 |
| m2 | square meters | 10.764 | square feet | ft2 |
| m2 | square meters | 1.195 | square yards | yd2 |
| ha | hectares | 2.47 | acres | ac |
| km2 | square kilometers | 0.386 | square miles | mi2 |
| VOLUME | ||||
| mL | milliliters | 0.034 | fluid ounces | fl oz |
| L | liters | 0.264 | gallons | gal |
| m3 | cubic meters | 35.314 | cubic feet | ft3 |
| m3 | cubic meters | 1.307 | cubic yards | yd3 |
| MASS | ||||
| g | grams | 0.035 | ounces | oz |
| kg | kilograms | 2.202 | pounds | lb |
| Mg (or “t”) | megagrams (or “metric ton”) |
1.103 | short tons (2000 lb) | T |
| TEMPERATURE | ||||
| oC | Celsius | 1.8C + 32 | Fahrenheit | oF |
| ILLUMINATION | ||||
| lx | lux | 0.0929 | foot-candles | fc |
| cd/m2 | candela/m2 | 0.2919 | foot-Lamberts | fl |
| FORCE and PRESSURE or STRESS | ||||
| N | newtons | 0.225 | poundforce | lbf |
| kPa | kilopascals | 0.145 | poundforce per square inch | lbf/in2 |
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