About T-Shirt Sizing Calculator

Map T-shirt sizes (XS, S, M, L, XL, XXL) to story points using customizable Fibonacci-based mappings. Track items and calculate sprint totals.

Frequently Asked Questions

What is T-shirt sizing in agile?

T-shirt sizing is an estimation technique where user stories are sized as XS, S, M, L, XL, or XXL instead of precise numbers. This approach reduces analysis paralysis and makes estimation faster by using relative sizing.

Why use Fibonacci numbers for story points?

Fibonacci sequence (1, 2, 3, 5, 8, 13...) is used because the gaps between numbers increase as values grow, reflecting the natural uncertainty in estimating larger tasks. It discourages false precision.

How do I choose the right T-shirt size?

Compare the story to previously completed work. If it is similar to a past "Medium" story, size it as M. Focus on relative complexity, not absolute time. When in doubt, size up.