Jar Test Results Analyser and Converter

When you perform your "Jar Test" the readings are "inches" not "percents". The Soil Triangle Chart (below) requires that you know the percentage of each type soil particle. To learn about performing the Jar Test click here:

This handy "Converter" will take your results in inches (and tenths) and provide not only the percentage of each particle, but the final SOIL COMPOSITION result (the same result as the chart!). You can then use this "Type of Soil" description to select your soil type in the Garden Calculator.

Enter height (ex: 7.5 inches) of

Enter height (ex: 7.0 inches) of
SILT and SAND:        

Enter height (ex: 5.5 inches) of
SAND (only):              

1/8 = .125
1/4 = .250
3/8 = .375
1/2 = .500
5/8 = .625
3/4 = .750
7/8 = .825

Click to calculate Particle Percentages

Reset input data to start over

Percent of Silt is:        
Percent of Clay is:       
Percent of Sand is:      

Type of soil is:

Moisture movement rate at Soil Saturation

Click to copy text to Clipboard.
Results on this page will clear,
but exist on clipboard for use
in Irrigation Matching Calculator.
Where you will find a "paste" button
for inserting this Jar Test data.