Various Unit Conversions
- Sep 26, 2021
- 2 min read
Updated: Jul 13, 2025
This post is starting off very, very small. I'll add to it periodically. What I really have in mind here is an easy place I can go to when I need this type of information. What I recommend is that you download a FREE, small, handy program called Convert 123, from a company called Pipeflow. I have installed this simple program on every computer I use. It provides a wide range of unit conversions, as shown in the screenshot below. I have no affiliation with this company other than the fact that I've been a user of their excellent, cost-effective, software programs for many years. In addition to Convert 123, I use Pipe Flow Expert, Pipe Flow Wizard, and Pipe Flow Advisor.
The link for Pipeflow's free unit conversion software can be found here:
1 milliliter (mL) of purified water weighs 1 gram (g)
1 pound (lb) = 453.592370 g
1 fluid ounce (fl. oz.) = 29.573530 mL
1 mL = 0.0338 fl. oz.
2 pints = 1 quart
4 quarts = 1 gallon
1 gallon (gal) = 128 fl. oz. = 3,785.411784 mL = 3.785412 liters (L)
1 L = 0.264172 gal
7.4805 gallons = 1 cubic foot
231 cubic inches = 1 gallon
In the petroleum industry the most common liquid unit of measure is the barrel (bbl).
1 barrel (bbl) = 42 gallons
Mbbl = 1,000 gallons
MMbbl = 1,000,000 gallons
1,728 cubic inches = 1 cubic foot
27 cubic feet = 1 cubic yard
Documents Available for Download
In doing research I often come across documents that do a good job of tabulating and/or summarizing useful data and information. You can download PDF versions here.
This is a 66-page document providing information on the metric and imperial measurement systems. Numerous examples of math/conversion problems with solutions are provided. This is a very clear and concise document - well done!
Short, 4-page document called Units of Concentration that discusses moles and normality.
Just a 1-page document with units of measurement used in the medical field with many of which are applicable to those of us working with water and wastewater.
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Great resources! Thank you!