What Is Planning Poker? A Practical Guide to Agile Estimation

Planning Poker is a simple, consensus-based way for agile and scrum teams to estimate the effort of user stories. This guide explains what it is, why it works, how to run a session step by step, and which estimation scale to pick.

What is Planning Poker?

Planning Poker (also called Scrum Poker) is an estimation technique where each team member privately chooses a card representing how much effort a task will take. Everyone reveals their card at the same time. Because votes are hidden until the reveal, no one is anchored by the loudest voice in the room — you get honest, independent opinions. When estimates differ, the team discusses why and votes again until they reach consensus.

Why teams use it

• Removes anchoring bias — simultaneous reveal means juniors aren't swayed by seniors.
• Surfaces hidden complexity — a wide spread of votes is a signal to discuss before committing.
• Builds shared understanding — the discussion, not just the number, aligns the team.
• Fast and lightweight — a few rounds estimate a whole backlog.

How to run a Planning Poker session

1. Create a room and choose an estimation scale.
2. Invite the team by sharing the room link or code.
3. Add the user stories you want to estimate and set their order.
4. Read a story aloud and let everyone ask clarifying questions.
5. Vote privately — each person selects a card.
6. Reveal together and look at the spread.
7. Discuss outliers — the highest and lowest voters explain their reasoning.
8. Re-vote if needed, then lock in the agreed estimate and move on.

Estimation scales

• Fibonacci (1, 2, 3, 5, 8, 13, 21) — the most popular. The growing gaps reflect that big tasks are harder to estimate precisely.
• T-shirt sizes (XS–XL) — great for quick, high-level estimation before committing to numbers.
• Powers of two (1, 2, 4, 8, 16, 32) — another non-linear option some teams prefer.
• Custom — define whatever values fit your team.

What are story points?

Story points measure relative effort, not hours. A 5-point story is roughly five times the effort of a 1-point story — accounting for complexity, uncertainty and volume of work. Estimating in points keeps the team focused on relative size instead of arguing about exact durations, and lets velocity stabilise over time.

Try it free

SmartPlanning is a free online Planning Poker tool — real-time voting, hidden cards, instant reveal and consensus. No sign-up required.