Trail Construction and Maintenance Notebook
Metric Conversions
| To Convert From This Unit | To This Unit | Multiply by |
|---|---|---|
| inch | millimeter | 25.4* |
| inch | centimeter | 2.54* |
| foot | meter | 0.3048* |
| yard | meter | 0.9144* |
| mile | kilometer | 1.6 |
| millimeter | inch | 0.039 |
| centimeter | inch | 0.394 |
| centimeter | foot | 0.0328 |
| meter | foot | 3.28 |
| meter | yard | 1.09 |
| kilometer | mile | 0.62 |
| acre | hectare (sq. hectometer) | 0.405 |
| square kilometer | square mile | 0.386* |
| hectare (sq. hectometer) | acre | 2.47 |
| ounce (avoirdupois) | gram | 28.35 |
| pound (avoirdupois) | kilogram | 0.45 |
| ton (2,000 pounds) | kilogram | 907.18 |
| ton (2,000 pounds) | megagram (metric ton) | 0.9 |
| gram | ounce (avoirdupois) | 0.035 |
| kilogram | pound (avoirdupois) | 2.2 |
| megagram (metric ton) | ton (2,000 pounds) | 1.102 |
| ounce (U.S. liquid) | milliliter | 30 |
| cup (inch-pound sys) | milliliter | 247 |
| cup (inch-pound sys) | liter | 0.24 |
| gallon (inch-pound sys) | liter | 3.8 |
| quart (inch-pound sys) | liter | 0.95 |
| pint (inch-pound sys) | liter | 0.47 |
| milliliter | ounce (U.S. liquid) | 0.034 |
| liter | gallon | 0.264 |
| liter | quart | 1.057 |
| degrees Fahrenheit | degrees Celsius | (°F - 32) x 1.8 |
| degrees Celsius | degrees Fahrenheit | (°C x 1.8) + 32 |
Metric Comparisons
- A millimeter, which is one-thousandth of a meter, is about the thickness of a dime.
- One inch is just a fraction (1/64 inch) longer than 25 mm (1 inch = 25.4 mm).
- 150 mm is the length of a dollar bill.
- One foot is about 3/16 inch longer than 300 mm (12 inches = 304.8 mm).
- A meter is a little longer than a yard, about a yard plus the length of a piece of chalk.
1 km (about 5/8 of a mile)
|<-------------------------------->|
1 mile
|<---------------------------------------------------------->|
Contract and Ordering Information
For additional information about trail construction and maintenance, contact
Brian Vachowski at MTDC:
E-mail: bvachowski@fs.fed.us
You can order a copy of this document using the order form on the FHWA's Recreational Trails Program web site at: http://www.fhwa.dot.gov/environment/rectrails/trailpub.htm
Fill out the order form and fax it to the distributor listed on the form. If you do not have internet access, you can send a fax request to 301-577-1421, e-mail your request to:
report.center@fhwa.dot.gov,
or request by mail from:
USDOT, Federal Highway Administration
Office of Human Environment
Rm. 3240 400 7th St. SW.
Washington, DC 20590
Produced by:
USDA Forest Service
Missoula Technology and Development Center
5785 Hwy. 10 West
Missoula, MT 59808-9361
Phone: 406-329-3978
Fax: 406-329-3719
E-mail: wo_mtdc_pubs@fs.fed.us
