If you are trying to figure out for yourself, I recommend a chart that I found on Stellar-One.com. I used my connection with my cousin Bernie to show how it works:
- Identify your common ancestor (Joannes Kwiatkowski).
- Identify the level that direct ancestor is on in relationship to yourself (my second great-grandfather).
- Identify the level that same ancestor is on in relationship to your cousin (Bernie’s great-grandfather).
- Follow both relationships across and downward until they converge (second cousin once removed).

Here’s the complete cousin finder: 