MachineCalcs

Finder

Pipe Schedule Finder

Pick a nominal pipe size and schedule, or enter a target inside diameter. The finder returns actual OD, wall, bore, flow area and nominal steel weight so adjacent pipe calculators start with real dimensions instead of nominal size.

Optional: enter a required bore and the nearest schedule row with at least that ID will be selected.

Selected dimensions

Inside diameter

52.48 mm

2.0661 in

OD
60.3 mm / 2.375 in
Wall
3.91 mm / 0.15394 in
Flow area
2,163.1 mm^2
Steel weight
5.437 kg/m

Schedule rows

Sch 40 and Sch 80 steel pipe dimensions from the site reference table.

NPS 1/8 Sch 40

OD
10.3 mm
ID
6.84 mm

NPS 1/8 Sch 80

OD
10.3 mm
ID
5.48 mm

NPS 1/4 Sch 40

OD
13.7 mm
ID
9.22 mm

NPS 1/4 Sch 80

OD
13.7 mm
ID
7.66 mm

NPS 3/8 Sch 40

OD
17.1 mm
ID
12.48 mm

NPS 3/8 Sch 80

OD
17.1 mm
ID
10.7 mm

NPS 1/2 Sch 40

OD
21.3 mm
ID
15.76 mm

NPS 1/2 Sch 80

OD
21.3 mm
ID
13.84 mm

Use actual pipe dimensions

Nominal pipe size is a name, not the bore. Schedule changes the wall and inside diameter, so copy the actual OD and wall into the pipe pressure rating calculator, pipe volume calculator or pipe support span calculator.