Safety and Information

Always make sure you test your coils before putting power to it!

This calculator will never replace a multimeter; please make sure you have an accurate method to test your build before you fire it up

Interpreting the Results

Number of wraps

This is the calulated number of wraps required. The calculator will round the number to the nearest full and half wrap numbers

Resistance of Each Coil/Build Deck

The first output displays the resistance of each coil. If a single coil build, then this should be equal to the build deck number.

If you have multiple coils, this number represents the resistance of each, where the build deck will be the final multiple coil calculated resistance

Total Wire Length

This represents the calculated length of your wire in the mod after it has been wrapped, and installed/ends clipped off.

Leg Power Loss

Power wasted on heating the legs can make your experience seem harsh or taste metallic. Keep your leg length as short as possible; wire guage and number of wraps also are included with this calculation. Try to keep your waste below 10%

Heat Capacity

This number contributes to the 'ramp up' time of your coil. Higher numbers will require higher power, or power on ramps to heat up to its optimal temperature.

Errors and Estimations

The coil calculator uses 'simple' formulas to best represent a digital model of geometry and electrical properties of an atomizer coil. As a result, there are many variables that can result in real life differences once you have completed the coil.

We try our best at representing the model based on 'known' constants of the wire, but manufactur deviations of size and density can play a part in your final resulting resistance(Ohms)

Mandrel size also plays on the error factor; an oversize of the mandrel of .1mm will make the overall length roughly .314mm longer for each wrap. A 10 wrap coil will multiply this to 3.14mm overall length differance

With coils having touching loops, some current will flow between loops. Wires such as Kanthal create an insulating oxidation layer, but no insulator is perfect, and a small amount will leak through, changing its resistance

Ejuice does not conduct electricity very well, but does conduct a little. Carbon buildup from burnt ejuice does conduct electicity and can change the performance of the coil over time.