Online Water Calculator to Convert MI (Miner's Inches, Using Varying State Standards) into GPM, CFS or AFA

The free calculator on this page will convert miners inches (MI) into the following volume/flow quantities:

CFS - cubic feet per second (Note - see the discussion on the various MI measurements used in different states; you will need to select the CFS option that applies to your state)
GPM - gallons per minute *
AFA - acre feet per annum *

* Note that the calculator uses the Arizona standard of 1 CFS = 40 MI in the GPM and AFA calculations. If your state uses other standards and you need to convert the miner's inches into GPM or AFA, use the calculator below to calculate CFS, then use the CFS calculator to convert the cubic feet per second into GPM or AFA.

Miners Inches Conversion Calculator

Formulas Used in the Calculator
1 MI = 11.22 gpm
1 MI = 0.020 CFS (or 1/50 CFS)
1 MI = 0.025 CFS (or 1/40 CFS)
1 MI = 0.026 CFS (or 1/38.4 CFS)
1 MI = 18.091 AFA

* See the Miner's Inch page

DISCLAIMER: Use at your own risk, and doublecheck the math with your own calculator. You should also check with your hydrologist or water lawyer to make sure that the formulas are correct for your state. The calculator will work with Internet Explorer, Firefox and Netscape 6.0 (and higher). Results are rounded off.

How to use the calculator. (1) Enter the number of gallons per minute you wish to convert in the top of the form. DO NOT USE COMMAS. (2) Select MI, CFM, CFS or AFA. (3) Click "Calculate. The converted expression will appear in the last box (conversion). If you selected CFS, the converted figure is an expression in CFS. To recalculate with a different expression (for example, AFA instead of CFS), be sure to select AFA, and click the calculate button again so that the math will reset. If you don't understand this, experiment using 1 gpm. The results will match the formula above.

Total number of Miner's Inches
Miner's Inch Conversions
Conversion

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◦ Cubic Feet Per Section (CFS) Conversions (to gps, gpm, gpd, gpa, AFA, MI, CFA)

◦ Gallons Per Minute Conversions to AFA, MI, CFS

◦ Miners Inches Conversions to GPM, CFS or AFA

◦ A Look at Miners Inches

◦ Quck Conversions - Conversion Table

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