Tritype explained: how the three-number Enneagram code works

Most Enneagram material gives you one number and stops. Tritype adds two more. The reasoning goes like this: everyone uses their gut, heart and head, so everyone must have a favorite way of handling each one. Pick the type you lean on most in each center, rank the three, and you have a tritype. This page goes further than a quick definition: it covers how the code is read, lists every possible set, and explains how people try to work theirs out.

The rules of a tritype code

Three numbers

Exactly one from the gut center (8, 9, 1), one from the heart center (2, 3, 4) and one from the head center (5, 6, 7)

First number

Your core type, the one tradition says drives you most

Second number

Your strongest type in a second center

Third number

Your strongest type in the remaining center, usually the least developed of the three

Not allowed

Two numbers from the same center, such as 6-7-2 or 2-4-9

Reading the notation

Tritypes are written in several ways that mean the same thing. 4-5-1, 451 and 4/5/1 all describe a core Four whose second-strongest pull is Five and whose third is One. Writers who prefer to show wings sometimes stack them in, as in 4w5-5w6-1w9, but that is an extra layer of guesswork on top of an already speculative code.

Order changes the meaning. 4-5-1 and 1-4-5 contain the same three numbers but describe people with different cores: the first is a Four who also leans on Five and One, the second a One who also leans on Four and Five. Do not mix a tritype up with a wing either. In 4w5 the 5 is a neighbor on the circle, while in 4-5-1 the 5 is the favorite head type, and it only matches the wing by coincidence.

Tritype order: does strength matter?

In the theory, yes. The first type is said to shape motivation most deeply, the second to come out readily when the core strategy is not working, and the third to show up less often and with less polish. Teachers who use tritype also describe a back-and-forth among the three: when one strategy hits a wall, a person switches to the next. A Six trying to feel safe might reach for Nine calm and then Three busyness, for example.

In practice, the ranking is the shakiest part of the code. Most people can say with some confidence which type is not them; fewer can say whether their second number edges out their third.

All 27 tritype sets

Choosing one type from each of three centers gives 3 times 3 times 3, or 27, combinations. The table lists every one, written in plain numerical order because ordering is a separate step. Find your likely gut and heart types on the left, then read across to the column for your likely head type.

Each set can then be put in six different orders, depending on which type comes first, second and third. A set of 3, 6 and 9, for instance, could be written 3-6-9, 3-9-6, 6-3-9, 6-9-3, 9-3-6 or 9-6-3. That brings the full count of ordered codes to 162.

Tritype names

The word tritype comes from Katherine Chernick Fauvre, who presents it as her trademarked term and has published her own archetype names for the 27 sets. We use the word only as the everyday label for the idea of one type per center. We do not reproduce her names or descriptions, and the sets in the table above are simply numbers.

How people try to work out their tritype

There is no measurement that pins a tritype down. People who explore it usually do so by reflection, and a careful approach looks something like this:

1. Settle your core type first, with as much care as you can. Everything else depends on it.
2. Read the three types in each of the other two centers and ask which strategy you fall back on when your core approach is not working.
3. Look for repeated evidence over months, not a single good fit. A Five who keeps noticing a Two-style urge to be useful at parties has a better clue than one who liked a description once.
4. Only then try to rank the second and third numbers, and accept that you may not be able to.
5. Write your best guess down, revisit it later, and see whether it holds.

Tritype tests and why EnneaFox does not report one

Many online tritype tests take your highest score in each center and line them up. That approach inherits every uncertainty in the scores. Your second and third numbers are, by design, types you scored lower on, and small differences there can flip the code from one day to the next.

The EnneaFox assessment does not report a tritype. The items were written to estimate a best-fit core type and your alignment with each of the nine types, not to rank your favorite type inside each center. When you finish, you see your center; the full report shows how closely your answers align with all nine types, which you can reflect on, but it does not turn them into a three-number code.

Research status