Spike's Calculators

Pipes have an inner and an outer surface area. Calculate the outer surface area by entering the outer diameter. If you need to know the inner surface area, use the inner diameter.

This calculator uses inches for diameter measurement and feet for the pipe(s) length.

- enter the diameter of the pipe in inches
- the length of the pipe(s) in feet
- decimal precision, the number of digits after the decimal point

The pipe's circumference and surface area are either inner or outer results depending on which diameter measurement, the inner or outer, you used!!

- the circumference of the pipe in inches
- the circumference of the pipe in millimetres
- the surface area of the pipe in square inches
- the surface area in square feet
- the surface area in square centimetres
- the surface area in square metres

S = D*π*L where S is the surface area in square units D the pipe's diameter π = 3.14159265 L the length of the pipe

one inch (in) = 25.4 millimetres (mm) one square inch (in²) = 0.00694444444444443 square feet (ft²) one square inch (in²)= 6.4516 square centimetres (cm²) one square inch (in²) = 0.00064516 square metres (m²)

- Bend Radius and Angle
- Curved Pipe Volume
- Internal Angle from the Bend Radius
- Pipe Bend Radius Calculated from an Angle
- Pipe Volume from Curve Length and Height
- Pipe Volume

- Pipe Inner and Outer Surface Area - Inches
- Pipe Inner and Outer Surface Area - Millimetres
- Pipe Surface Area - from a Circumference in Inches
- Pipe Surface Area - from a Circumference in Metres
- Pipe Surface Area - from a Circumference in Millimetres
- Pipe Surface Area from Diameter - Decimal Inch
- Pipe Surface Area - From Diameter in Inches + Fraction