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Free T-shirt sizing tool for a whole backlog

Size a whole backlog in minutes. Everyone drags cards into size columns at the same time, without talking. Cards that keep bouncing between sizes get flagged, and only those need a conversation. Free, with no sign-up.

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When to use it

• A large backlog that would take days with planning poker
• Early, rough sizing for a roadmap
• Refining many similar stories

What it does

• T-shirt, Fibonacci, modified Fibonacci, powers of 2 or a custom scale
• Everyone moves cards at the same time
• Cards that keep moving get flagged for discussion

How to use it

1. Add the stories. Bring in the backlog you want to size.
2. Sort in silence. Everyone drags cards into columns at the same time, with no talking.
3. Challenge. Move any card you disagree with. Flagged cards are the ones that keep moving.
4. Discuss only those. Talk through the flagged cards and leave the rest as they are.

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Frequently asked questions

How is this different from planning poker?

Planning poker looks at one story at a time. Silent sizing handles a whole backlog at once and saves discussion for the cards people disagree on.

Which scale is best?

T-shirt sizes suit early, rough work. Use Fibonacci if the result feeds a velocity-based plan.

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