PreciseMeasurement.com

Conversion Calculator
A simple calculator to convert between various units.
www.thehaws.org/

Metric Conversion Tutorial
Step-by-step, interactive tutorial for converting metric units.
chemistry.boisestate.edu/

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.
convertplus.com/

Measurement Conversion
Convert volume (capacity), weight, length, area, temperature, pressure, torque, power and energy measures between U.S./Imperial and SI (Metric) units. Requires JavaScript.
hemsidor.torget.se/

Metric Conversion Tables to Imperial Measurements
Standard-to-metric conversion factor tables with definitions, derived units and prefixes.
www.simetric.co.uk/

Conversion Factors for Energy Equivalents
Physics laboratory of the National Institute of Standards and Technology (NIST) sponsors and maintains this reference resource of CODATA-recommended values of fundamental physical restraints.
physics.nist.gov/

Ron's Hard Conversion Tools
Online unit conversion calculators for volume, distance, weight, and temperature units. Also includes number conversion (decimal, hex, and binary) and a tool to convert characters to or from ASCII codes.
www.ronshardwebapps.com/

Conversion Table of Non-Metric measures into SI and CGS
Conversion of non-metric measures into SI (meter-kilogram-second) and CGS (centimeter-gram-second).
n93.cs.fiu.edu/

Unit Conversion and Day of the Week
Converts such things as inches to centimetres, gallon to cubic metres or even curie to becquerel
www.soton.ac.uk/

Online Conversion
Offers conversion tools for length, volume, temperature, astronomical, clothing sizes, computer bytes, cooking measurements, time zones, density, energy, finance, flow rates, force frequency, and some fun pages.
www.onlineconversion.com/