This is a table on how to equate a t-shirt size to a rough estimate for a squad to complete some work. This is meant as a rough guide. So customize it for your situation.
| T-shirt Size | Rough Estimate Range for a squad (2–3 FTEs) |
|---|---|
| XS | < 1 Week |
| S | 1 to 2 weeks (< 1 Sprint) |
| M | 1 – 3 Sprints (< 1.5 Months) |
| L | 1.5 – 3 Months (< 1 Quarter) |
| XL | > 1 Quarter |