OneMorePoint

Sign in

Fibonacci Sequence Generator for Agile Estimation

Free tool
Sequence
0
1
2
3
5
8
13
21
?
  • This is the modified deck most planning-poker tools ship by default: the repeated 1 is dropped and a 0 is added for trivially small work.
  • The gaps widen on purpose - teams can reliably tell a 1 from a 2, but not a 20 from a 21, so the scale stops pretending they can.

Vote a real round with this deck - private votes, simultaneous reveal.

Two sequences, one name

"Fibonacci" in agile estimation usually means a modified version of the mathematical sequence, not the pure original. The generator above can produce either: the agile deck (0, 1, 2, 3, 5, 8, 13, 21, ?) that most planning-poker tools ship by default, or the classic sequence (0, 1, 1, 2, 3, 5, 8, 13, 21...) with the repeated 1 left in.

Why agile decks drop the repeated 1

The mathematical sequence has two consecutive 1s. In a voting deck, two identical cards add nothing - nobody needs to choose between "1" and "1" - so the agile version collapses them into one and adds a 0 for work that's real but trivially small, like a one-line config fix.

Why the gaps widen on purpose

This is the actual reason Fibonacci beats a plain 1-through-10 scale for estimation: the gaps between numbers grow as the numbers grow. Near the bottom, a 1 and a 2 sit close together because people can genuinely tell small sizes apart. Near the top, 13 to 21 is an eight-point jump, because at that size nobody can reliably distinguish "this big" from "this much bigger." A linear scale pretends that distinction is always meaningful; Fibonacci doesn't. The full reasoning, including the psychology behind it, is in the Fibonacci story points guide.

Extending past 21

The generator will produce more terms if you ask for them, but for real backlog items, needing a number above 21 is usually a sign the story should be split rather than given a bigger card - more on sizing that kind of story.

Frequently asked questions

The agile deck drops the repeated 1 from the mathematical sequence and adds a 0 for trivially small work - it is what most planning-poker tools ship by default. Classic mode keeps the pure sequence, including the repeated 1.
Story Point CalculatorFree story point calculator: rate complexity, volume, and uncertainty to get a suggested card on the Fibonacci scale - plus honest guidance on when to spike or split instead.Sprint Capacity CalculatorFree sprint capacity calculator: team size, sprint length, days off, and focus factor in - real person-days of capacity out, with guidance for scaling velocity when availability drops.Story Points to Hours ConverterConvert story points to calendar time the only honest way - through your team’s velocity. Get a realistic duration range for a backlog or epic, and learn why per-story hour conversions fail.Printable Planning Poker CardsFree printable Scrum Poker / Planning Poker cards - Fibonacci, T-shirt sizes, or Powers of 2. Print or save as PDF, cut them out, and estimate with a physical deck.Estimation Technique ChooserAnswer a few questions about what you’re sizing and your team’s history to get a recommended agile estimation technique - Scrum Poker, T-shirt sizing, affinity estimation, and more.Planning Poker Cost CalculatorSee what paid planning poker tools actually cost at your team size, sourced from each vendor’s own pricing page - then compare it to $0 with OneMorePoint.Velocity CalculatorEnter your team’s last few sprints to get a rolling average velocity plus a realistic range - not just a single decimal number that hides the variance.Sprint Goal GeneratorTurn what your sprint is about into a real Sprint Goal - a single objective the sprint serves, not a list of tickets. Free, deterministic templates, no AI.PERT CalculatorEnter optimistic, most likely, and pessimistic estimates to get a weighted expected value and confidence range - the (O + 4M + P) / 6 formula, done for you.User Story GeneratorDraft a user story in the As a / I want / So that format, then check it against the INVEST criteria - free, deterministic, no AI.Acceptance Criteria GeneratorScaffold Given/When/Then acceptance criteria for a user story - free, deterministic Gherkin-style scenario builder, no AI.Burndown Chart GeneratorPaste in daily remaining points and see the ideal-vs-actual burndown instantly - free, no spreadsheet required.Burnup Chart GeneratorTrack scope and completed work as two separate lines - free burnup chart generator that shows mid-sprint scope changes a burndown chart hides.RICE CalculatorScore a feature or idea with the RICE framework - Reach, Impact, Confidence, Effort - free calculator, no sign-up.WSJF CalculatorCalculate Weighted Shortest Job First scores the SAFe way - Cost of Delay divided by Job Size - free calculator, no sign-up.Sprint Date CalculatorGenerate a full sprint schedule from a start date, sprint length, and number of sprints - free, no spreadsheet needed.Focus Factor CalculatorDerive your team's real focus factor from a few recent sprints of actual data, instead of guessing - free, feeds directly into the sprint capacity calculator.Meeting Cost CalculatorSee what a meeting actually costs in salary-hours, per meeting and annualized if it recurs - free calculator, fully loaded hourly cost.Definition of Ready BuilderBuild and print a Definition of Ready checklist for your team - toggle the defaults, add your own, free and printable.Definition of Done BuilderBuild and print a Definition of Done checklist for your team - toggle the defaults, add your own, free and printable.T-Shirt Size ConverterConvert t-shirt sizes to a rough story-point equivalent with an editable mapping - free, with an honest note on the false precision this introduces.Retro Format PickerAnswer 3 quick questions about your sprint to get a matched retrospective format - Start/Stop/Continue, Mad/Sad/Glad, Sailboat, and more.Scrum Timebox CalculatorGet every Scrum event's maximum timebox for your sprint length - Sprint Planning, Daily Scrum, Review, and Retrospective, per the Scrum Guide.Estimation Accuracy TrackerLog estimated vs. actual effort across stories to see your team's real calibration bias - saved locally in your browser, no account needed.Cone of UncertaintySee the realistic estimate range for your project phase - an interactive visualization of Boehm and McConnell's Cone of Uncertainty.Story Splitting HelperGet concrete prompts for splitting an oversized story - workflow steps, business rules, CRUD, data boundaries, interfaces, and happy path vs. edge cases.Team Availability MatrixFind the best meeting time across distributed team members' timezones - enter local working hours, see the UTC overlap heatmap instantly.Random Order GeneratorShuffle a list of names into a random order - free tool for standup order, retro round-robins, or demo presentation order.Sprint Name GeneratorGenerate a fun sprint name - space, mythology, or animal themed - free, instant, no sign-up.Kanban vs Scrum ChooserAnswer 4 questions about how your work arrives and your team structure to get a Scrum, Kanban, or Scrumban recommendation.Agile GlossaryA searchable, accurate glossary of Scrum, Kanban, and estimation terms - roles, events, artifacts, and the vocabulary that actually comes up.