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Wire wizard building from the ground up

Coil setup the shape of the finished coil


Temperature control results

Enter temperature points in °C, in ascending order and separated by commas. A temperature point of 20 °C should be included. Use
°C= °F

The wire you have built has a resistance factor of at this temperature.

To match it on a mod set to , adjust the temperature to ~°C or ~°F.

How it works

This calculator replaces the old TCR calculator.

Get started

Single wire build

You start with one slot. If you're only going to use one wire, that's all you need. Select the material, gauge and other values, and you're good to go.

Temperature control tip: If you're not mixing materials, and all you want is a CSV file for the DNA 200, the only thing you have to choose is the material. The other parameters, like the number of wraps or the gauge, do not affect the temperature curve, unless you use two ore more different materials in the same build.

Multiple wire build

The first dropdown menu in the slot is "Wire". Change it to "Parallel". Now you have two wires in parallel. If you want three or more wires in parallel, click the + button below the second slot.

If you choose "Clapton" you'll get two sub slots. No more, no less. However, there's nothing wrong with choosing "Parallel" or even "Clapton" again in one or both of these slots.


The blue box on the left tells you about your resulting wire. If you want to see the details about any part of your wire, check the box "Show results for all components".


If you want to download the TCR profile as a CSV file to your DNA 200, click the DNA200 tab. This function is only available if all your selected materials have an associated TFR/TCR profile. Materials that lack a TFR/TCR profile are marked with an asterisk in the dropdown menu. Please note that the download function does not work in Microsoft Internet Explorer. The solution is to use any other browser, or manually create a new csv file on your computer and copy the text from the text box.

Warning: The more complex your wire build, the less accurate the results are probably going to be. Especially if your build involves many levels (goes far to the right on the screen, a wire that is part of a wire that is part of a wire, etc.). Errors tend to accumulate.

Video tutorials

Example to really get you started

Let's say you want to build a fancy coil: A clapton that has three thick, parallel wires in the core, and is wrapped with two thin, parallel wires.

  • Choose "Clapton" in the first slot. You get two new slots to the right of the clapton. One for the core, and another one for the wrap.
  • Under "Core" choose "Parallel", and click the plus button. You now have three parallel wires in the core.
  • Under "Wrap", choose "Parallel". You now have two parallel wires in the wrap.
  • Choose the materials for each of your five wires.
  • Choose some thick gauges for the core, and some thinner ones for the wrap.

Why should I use it?

First of all: If you just want a calculator that is simple to use, and you don't make mixed wires, the old coil wrapping calculator is probably a better choice for you. It is a much more polished piece of software, and designed to be (almost) as simple as possible to use, while still giving accurate results and a handful of more advanced options.

I designed this calculator with two distinct groups of vapers in mind:

  • Those who use temperature control, and want to combine different materials with different temperature coefficients of resistance.
  • Those who wrap fancy coils, and want to better understand the flow of the current and heat in the various parts of the coil.

Even if you don't belong to either group, I hope you find this calculator helpful, that it helps you better understand what goes on in the coil, and that it ultimately enables you to build better coils.

Tips & tricks

  • If you want to input the wire length manually, set the "Number of wraps" to 0, and enter your desired wire length in the "Leg length" box.
  • For dual/triple/quad coils, choose "Parallel" in the first slot, and treat each sub-slot as a separate coil. Check the box "Show results for all components" to see the stats for each coil. This even allows you to build different coils to use in parallel in the same atomizer, if you're so inclined. As long as you match the heat flux and heat capacity of the coils, and a decent vape should be possible – at least in theory.
  • If you want to use a mixed or otherwise non-Ni200 coil on a Ni200 only mod, you can click the "Ni 200 equiv." tab next to the chart on the upper right. The temperatures displayed here will tell you what temperature setting to adjust your mod to, in order to get the temperatures printed in the table header. If you want to know the equivalent of a specific temperature not already in the table, you can click the topmost tab labeled "TFR, to set the temperature point(s) of your choice.

Future features in no particular order

Stuff I may or may not add to the calculator at some point in the future.

  • Add twisted wires
  • Add staggered claptons.
  • Special calculation for claptons around parallel, similar to claptons around ribbon.
  • Add inputs for the coil itself; Inner diameter and wrap count, to calculate total length, and subsequently everything else, from that.
  • One slot type for "Parallel, flat" and another one for "Parallel, bundle"?
  • Improve layout - make everything easier on the eye.
  • Suggest temp setting(s) for Ni200 only mods.