Sump Pump Sizing Calculator

Estimate the pumping capacity your basement needs and compare sump pump options by GPH at your discharge height. Choose between pedestal, submersible, and battery backup combo systems to find the best fit.

Basement Area (sq ft)

Pit Diameter (in)

Pit Depth (in)

Vertical Discharge (ft)

Horizontal Discharge (ft)

Pricing (edit to match local rates)

1/3 HP Pedestal ($)

1/3 HP Submersible ($)

1/2 HP Submersible ($)

3/4 HP Submersible ($)

Battery Backup Combo ($)

Sump Pit Section

Pit Volume

26.4 gal

18" dia x 24" deep

GPH Needed

225 GPH

150 GPH inflow x 1.5 safety factor

Best Value

1/3 HP Pedestal

$150.00

Purchase Option	Quantity	Est. Cost
1/3 HP PedestalBest value	1,920 GPH @ 14 ft	$150.00
1/3 HP Submersible	1,800 GPH @ 14 ft	$200.00
1/2 HP Submersible	2,940 GPH @ 14 ft	$300.00
3/4 HP Submersible	3,960 GPH @ 14 ft	$450.00
Battery Backup Combo	2,640 GPH @ 14 ft	$650.00

Recommended: 1/3 HP Pedestal at $150.00Your basement needs a pump capable of 225 GPH at 14 ft of total head. The 1/3 HP Pedestal delivers 1,920 GPH at that head height, providing adequate capacity with margin for heavy rain events.

Pedestal Pump ConsiderationsPedestal pumps are louder than submersible models because the motor sits above the pit. They are easier to service but not recommended for finished basements where noise matters. Consider a submersible model if noise is a concern.

This is an estimate for planning purposes. Actual sump pump sizing depends on soil permeability, water table height, storm intensity, and foundation drainage design. Always consult a licensed plumber for final system selection.