T-Shirt Sizing for Agile Teams

T-shirt sizing is a relative estimation method that trades numeric precision for speed. Teams use XS, S, M, L, and XL to bucket work by rough effort before converting to story points or sprint commitments.

T-shirt sizing vs Fibonacci

• T-shirt sizes — fast, intuitive, great for early backlog grooming or high-level roadmap sizing
• Fibonacci — better for sprint planning when the team needs comparable story point velocity over time

Using T-shirt decks in PlanITPoker

When creating a room, select the T-shirt deck to estimate with XS, S, M, L, XL plus question and coffee cards. You can switch approaches per session depending on whether you are refining the backlog or committing to a sprint.