- Convert-me.Com - Interactive calculators for many common and exotic measurement systems, including metric, Ancient Greek, Roman, and old Russian.
- CyberSleuth: Units of Measurements Worksheets - Twenty-three printable worksheets for elementary school-aged children. Focuses primarily on conversion of units of length.
- Measurement Worksheets - Features printable worksheets. Includes English and Metric System pages.
- Metric Conversion - Java metric conversion calculator for length, weight, pressure, and volume.
- A Dictionary of Units - A summary of most of the units of measurement to be found in use around the world today (and a few of historical interest), together with the appropriate conversion factors needed to change them into a standard unit.
- How Many? - A dictionary of units of measurement: explanations of the metric system, System Internationale (SI), English customary system, and other modern measuring systems. Plus extensive links to other measurement-related Internet resources.
- Metric 4 US - A site promoting the metric system which argues why metric is better and English is worse. Provides an English-metric online calculator.
- Metric Conversion Tables - Conversion factors and online calculators for metric and imperial units.
- The Modern Metric System - Dictionary of metric units explaining the principles and history of the system.
- Temperature Converter Fahrenheit Celsius (Centigrade) - A temperature converter for Celsius and Fahrenheit.
- Unit Conversions - Online conversions from physics units to other physics units. Includes a comprehensive set of units with definitions.
- Metric Conversion Tutorial - Step-by-step, interactive tutorial for converting metric units.
- FAQ: How do I read a ruler? - Instructions on how to use metric and English rulers.
- Funbrain.com - Measurement game - Game which has several levels of difficulty for both English and metric rulers.
- How To Read A Ruler - Article describes all of those little lines and markings.
- Jack's Math - Provides several methods for determining length, width and height.
- Measuring Angle and Distance with your Thumb - How to use body parts to estimate measurements.
- Origins of Measurements - Compares units of ancient times with modern ones.
- The Ruler Game - Timed game will test how quick you can read a ruler.
- Metric Measures - Offers equivalents for common measurements, plus how metric units are used in sports and the kitchen.
- Apples4theteacher.com - Measure the teddy bears game.
- Conversion Calculator - A simple calculator to convert between various units.
- GCSE Maths: Measurement - Includes length, area and volume and the use of prefixes in units. With worked examples and animations.
- Online Units Conversion - Gives equal values for areas, volumes, circle measurements, computer storage, currencies, distance and length, energy, fuel consumption, power, pressure, speed, temperature, time, torque, and weights.
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