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id, title, tags, daily
id title tags daily
2026-02-04T09:00:00-0500 2026-02-04 09:00:00
status/draft
topic/ergonomics/organizational
2026-02-04

2026-02-04 09:00:00

%% Exact time of writing unknown. Between 2026-02-04_08-07-00 and 2026-02-04_13-42-00 %%

T-Shirt Sizing

"T-shirt sizing" or "T-shirt size estimation" is a method of project estimation characterized by the use of T-shirt sizes representing project scale buckets.

[!example] T-Shirt Sizing in Agile --- Project Management Pathways

  • XS (1-2 days): Simple UI changes or minor bug fixes

Example: "Update button color on checkout page"

  • S (2-3 days): Feature enhancements with minimal complexity

Example: "Add product sorting by price"

  • M (5-7 days): Features requiring moderate integration

Example: "Implement basic search filters"

  • L (8-10 days): Complex features affecting multiple components

Example: "Create shopping cart functionality"

  • XL (2+ weeks): Major features requiring breaking down

Example: "Implement payment gateway integration"

The buckets chosen should be wide enough that scale can be confidently estimated after minimal investigation.

This method, as an ordinal scale is criticized as error prone and unhelpful in how-to-measure-anything-in-project-management.