Coil Wrapping Calculator
mmin
The distance between each "ridge" on the twisted wire. Use 0 for non-twisted wire (parallel strands).
For improved accuracy: Count 10 ridges, measure their total width, and divide by 10.
AWG
Ør
mmin
mmin ×
mmin
The width should normally be larger than thickness. Swap them
In a multi coil setup, all coils must be identical.
Two coils in parallel. Total resistance is halved. (1⁄2 R)
Two coils in serial. Total resistance is doubled. (2 R)
All three coils in parallel. Total resistance is divided by three. (1⁄3 R)
All three coils in serial. Total resistance is tripled. (3 R)
All four coils in parallel. Total resistance is quartered. (1⁄4 R)
All four coils in serial. Total resistance is quadrupled. (4 R)
Two coils in serial, connected in parallel to a second pair of serially connected coils. Or the other way around: Two coils in parallel, connected in serial to a second pair of parallelly connected coils. Total resistance is the same as for a single coil. (1 R)
Ra
Ω
Set the desired total coil resistance for your build.
R
l Ω
mm Ω
in
Changing material, AWG or wire diameter updates this value.
l Ω
mm Ω
in
lr
mmin
Changing
material,
setup,
target or
wire resistance
updates this value.
⌀c
mmin
ll
mmin
Total length of wires between coil and posts.
mmin
Space between each coil loop.
Heat flux
mW/mm²
V
W
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