Heat cable calculator
Calculate heat cable
Heat cable is an electrical wire that warms up like a heat mat. It is often used for heating reptile enclosures, and as electric under-floor heating in bathrooms. This calculator helps you work out an efficient way of wrapping a heat cable into a rectangular area, to create an even amount of heat across that area. Give it the dimensions of the area you want to fill, the details of your heat cable, and then change where the cable should start, the padding and the number of rows, to see how well your cable will be able to fit in that area. The results at the bottom will help adjust the configuration to fit the cable into the area
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Shrink-to-fit and keep visible
Corner too tight, increase outer padding, or alter the start position to one that does not need a corner
Corner too tight, increase outer padding, or alter the start position to one that does not need a corner
Corner too tight but the cable is not long enough to reach it, increase outer padding if you care
Corner too tight but the cable is not long enough to reach it, increase outer padding if you care
Corner too tight, increase area width
Corner too tight, increase area height
Corner too tight, increase area width
Corner too tight, increase area height
Corner too tight but the cable is not long enough to reach it, increase area width if you care
Corner too tight but the cable is not long enough to reach it, increase area height if you care
Corner too tight but the cable is not long enough to reach it, increase area width if you care
Corner too tight but the cable is not long enough to reach it, increase area height if you care
Corner too tight, decrease horizontal spacing
Corner too tight, decrease vertical spacing
Corner too tight, decrease horizontal spacing
Corner too tight, decrease vertical spacing
Corner too tight but the cable is not long enough to reach it, decrease horizontal spacing if you care
Corner too tight but the cable is not long enough to reach it, decrease vertical spacing if you care
Corner too tight but the cable is not long enough to reach it, decrease horizontal spacing if you care
Corner too tight but the cable is not long enough to reach it, decrease vertical spacing if you care
Cable is not long enough to reach this part, and could be $ longer
Heated part of the cable, $ long
Unheated part of the cable, $ long
Cable is $ too long to fit, so the extra wire has been drawn in a stupid place
Select your units
Work in
metric
imperial
Note that this does not convert directly between metric and imperial lengths, because it needs to work in whole numbers, so it works in mm for metric, and 32nd s of an inch for imperial. The actual conversion should be 1 mm to 1/25.4 inches, not 1 mm to 1/32 inches. Do not specify lengths in metric and expect to be able to switch to imperial and use the results there (or the other way around), it does not work that way, and you will get a 20-26% error in all measurements. If you want answers in metric, you must specify your measurements in metric. If you want answers in imperial, you must specify your measurements in imperial.
The area you want to fill
The cable
Arranging the cable
Results
X Reset all configuration settings to default.
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