Written by Jerry Ratzlaff on . Posted in Fluid Dynamics

Total head, abbreviated as $$h_t$$, is the sum of the discharge flange and the sum of the suction flange.

## Total Head formula

 $$\large{ h_t = \left( h_{dg} + h_{dv} \right) - \left( h_{sg} + h_{sv} \right) }$$

### Where:

 Units English Metric $$\large{ h_t }$$ = total head or height $$\large{ft}$$ $$\large{m}$$ $$\large{ h_{dv} }$$ = head velocity discharge $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$ $$\large{ h_{sv} }$$ = head velocity suction $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$ $$\large{ h_{dg} }$$ = gauge head discharge $$\large{ft}$$ $$\large{m}$$ $$\large{ h_{sg} }$$ = gauge head suction $$\large{ft}$$ $$\large{m}$$

## Related Total Head formula

 $$\large{ h_t = \frac{ 3960 \; WHP }{ Q } }$$ (water horsepower)

### Where:

$$\large{ h_t }$$ = total head

$$\large{ Q }$$ = flow rate discharge

$$\large{ WHP }$$ = water horsepower