The *Confining Pressure Calculator* in *Visualizing Stress*
(Figure 6) uses the equation for lithostatic stress defined in Equation
to calculate the stress at the base of the granite cube, or confining
pressure. Let us check the previous calculation using *The Confining
Pressure Calculator.* From the menu items select *Calculators*
and then *Confining Pressure*. In the textbox labeled* h*
enter *1500* and in the option box labeled *Units* enter *m*
for meters. Click *Calculate*. Note that *Visualizing Stress***
**provides the correct answer in the ten different units familiar
to structural geologists.