Is there a site to do conversions of measurements

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SUMMARY

This discussion focuses on the need for a comprehensive resource that teaches measurement conversions, specifically between units like gallons to cubic inches and grams to liters. The user emphasizes the importance of understanding conversions as multiplications by the identity, 1, using ratios of equivalent values. A suggested resource is a website claiming to offer over 800 conversions, although it lacks instructional content. The conversation highlights the necessity of knowing density for conversions involving mass and volume, particularly for substances like water.

PREREQUISITES
  • Understanding of basic mathematical operations, specifically multiplication and division.
  • Familiarity with measurement units such as gallons, cubic inches, grams, and liters.
  • Knowledge of density and its role in conversions between mass and volume.
  • Ability to interpret ratios and fractions in the context of unit conversions.
NEXT STEPS
  • Research the concept of dimensional analysis for unit conversions.
  • Learn about density and its application in converting between mass and volume.
  • Explore online tools for measurement conversions, focusing on educational resources.
  • Study the mathematical principles behind ratios and equivalent fractions in conversions.
USEFUL FOR

Students, educators, and anyone involved in fields requiring measurement conversions, such as science, engineering, and mathematics.

zy
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Is there a site that teaches how to do conversions of measurments. More specificly I need one that teaches coversion between different measurements like gallons to cubic inches or square feet to millimeters or grams to meters LOL if there is such a thing lol
 
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I stongly believe that all conversions should be taught as multiplication of a given quantity by the identity, 1. There are countless ways to write 1 as the ratio of any two equals. For example to convert feet to inches

3 feet = 3 feet * \frac{12 inches}{1 foot} = 36 inches

This can be extended to changes of measuring systems

3 feet = 3 feet * \frac{12 inches}{1 foot} * \frac{2.54 cm}{1 inch} = 91.44 cm

All conversions can be done by multiplying by appropriate representations of 1. One should never have to think about when to divide and when to multiply. The units tell us which way to form the numerator and denominator of the fraction equal to 1.
 
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Cool I get how to go from say grams to kilograms Its just when it goes from one measurement like grams to say liters. They boggles the mind LOL.
 
Wow that's a nice site but it does not teach it. I would have to sneak that in and cheat on my math test LOL And I don't have time to memorize 800 conversions LOL
 
I hate tables like the one posted. I would avoid any table that has no equal signs I want to see

2.54 cm = 1 inch
1 mile = 5280 feet
1 liter = 1000 cm^3

etc etc etc
 
Grams to liters only makes sense if you know the density of a substance involved. Then you form a conversion fraction from a known ratio.

mass = density * volume

For water density = 1 gm/cm^3

mass of water = (1gm/cm^3)*volume of water
 
Ok thanks everyone. I will check back in several hours and see if anyone has any more tips. Thanks for the help. Off to bed I go! :)
 

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