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# Electric Wire - Calculating Cross-Section Areas

## Calculate single and bunched electric wire cross-section area and diameter.

### Cross-Section Area of Single Wire

The cross-section area of a round single wire can be calculated as

A = D2 π / 4

= 0.7854 D2

where

A = cross-section area (mm2, in2)

D = diameter (mm, in)

Diameter (mm)

### Cross-Section Area of Bunched Wire

The cross-section area of bunched wires can be calculated as

A = n d2 π / 4

= 0.7854 n d2

where

n = number of wires

d = single wire diameter (mm, in)

#### Cross-Section Area Calculator - Multiple Wires

Diameter of each wire (mm)

Number of wires

### Diameter of a Single Wire Cross-Section Area

The diameter of a single wire cross-section area can be calculated as

D = (A 4 / π)1/2

= (1.2732 A)1/2

## Related Topics

• Electrical - Electrical units, amps and electrical wiring, wire gauge and AWG, electrical formulas and motors.

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Temperature

oC
oF

Length

m
km
in
ft
yards
miles
naut miles

Area

m2
km2
in2
ft2
miles2
acres

Volume

m3
liters
in3
ft3
us gal

Weight

kgf
N
lbf

Velocity

m/s
km/h
ft/min
ft/s
mph
knots

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O

Flow

m3/s
m3/h
US gpm
cfm

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