# Units of Measurement

What do inches, pints, centimeters, degrees, kilobytes and seconds all have in common? They are units of measurement. Learning when to use which unit, and how to convert from one to another is this week's topic.

• ## Convert Me5 stars

Convert Me has "interactive calculators for many measurement systems both commonly used like metric and U.S. Avoirdupois and quite exotic like Ancient Greek and Roman." These calculators allow you to specify significant figures (which determines how much rounding is done), a feature not found on other sites. To use, first select the type of unit such as Weight and Mass, or Distance and Length. Enter the measurement you want to convert from (such as 1.5 pounds) and click Convert. You'll get the conversion in all available units, such as .68 kilograms, 18 Chinese taels and 53 old Russian lots.

• ## CyberSleuth Kids: Units of Measurement Worksheets3 stars

These twenty-three printable worksheets for elementary ages provide practice for converting units of length (mostly) and units of weight (just a few.) The worksheets are not labeled, so you will need to click on each image to see what it covers. Topics include millimeters to centimeters, inches to feet, feet to yards, ounces to pounds, and vice versa. To print the pages without headers and footers, remove them in your browser's Page Setup dialog.

• ## EdHelper: Measurement Worksheets5 stars

Despite the title, this EdHelper page is not just worksheets, but a collection of puzzles, word stories, charts and lesson plans, all related to units of measurement. English length, weight, capacity, time and temperature are covered on this table of contents. Metric units are covered on a separate page (look for the Also Visit link. ) Some of the worksheet links only provide a single printable worksheet, while others allow you to generate an unlimited number of handouts and answer keys. Although paying members get even more worksheets, there is enough free content to earn a five-star rating.

• ## Online Conversion5 stars

Online Conversion is the most comprehensive of today's calculator sites, covering over 5,000 units and 50,000 conversions. Some of the unique units include computer measurements (bit, byte, kilobyte, and so on), cooking (drop, dash and pinch), and acceleration (celo and decigal.) To use, select the units you want converted from and to (such as knot to mach) from the drop-down lists. Results are rounded to seven decimal places. In the Fun Stuff category, you'll find Roman Numeral conversion, a Pig Latin translator, typing speed test and much more.

• By . Originally written on Dec 10, 2003. Last Modified on May 15, 2012.

• #### Honorable Mentions

The following links are either new discoveries or sites that didn't make it into my newspaper column because of space constraints. Enjoy!

• ### Units of Measurement

•  Beanstalk: The Measure of a Giant (A Math Adventure) by Ann McCallum (Paperback) - Usually ships in 24 hours Price: \$4.00
 Master Maths: Area, 3D Geometry, Vectors, Measures (Smart eBook) by G Ludinski (Kindle Edition)
 Measure Theory and Probability Theory (Springer Texts in Statistics) by Krishna B. Athreya, Soumendra N. Lahiri (Hardcover) - Usually ships in 24 hours Price: \$75.76