Core Concepts & Time Units

Traditional software estimation forces developers into false precision. Asking an engineer "Is this ticket a 3 or a 5?" encourages guessing, hides technical risks, and leads to chronic sprint overruns. Dual Point Estimation replaces single-point guesses with honest confidence intervals.

The Two-Point Principle

Rather than capturing a single target or an illusory "Most Likely" middle point, Dual Point Estimation captures two definitive bounds:

  • Low Estimate (Floor): The optimistic duration if requirements are clear, dependencies are resolved, and implementation goes smoothly without unexpected hurdles.
  • High Estimate (Ceiling): The realistic worst-case duration if known technical complexities, edge cases, legacy schema issues, or testing roadblocks emerge.

Why No "Middle" or "Expected" Value?

When teams provide three points (Optimistic, Most Likely, Pessimistic), stakeholders and engineers almost universally anchor to the "Most Likely" value and treat it as a hard commitment. The pessimistic bound is discarded, and the team is left exposed to foreseeable risk. Exposing only the Low and High boundaries forces sensible conversations before sprint commitment: either the High estimate is acceptable, or an investigation is required to narrow the gap.

Supported Time Units

Dual Point Estimation is completely time-based. It does not use abstract story points, allowing estimates to be compared directly against Jira's logged work and calendar schedules.

You can enter estimates using natural shorthand strings combining numbers and unit indicators:

UnitShorthandDuration in SecondsWorking Conversion
Weeksw, wk, week, weeks144,000 s5 working days (40 hours)
Daysd, day, days28,800 s8 working hours
Hoursh, hr, hour, hours3,600 s60 minutes
Minutesm, min, minute, minutes60 s60 seconds
Secondss, sec, second, seconds1 s1 second

Example Shorthand Inputs

  • 2w 3d = 2 weeks and 3 days (13 working days total)
  • 1d 4h = 1 day and 4 hours (12 hours total)
  • 4h 30m = 4 hours and 30 minutes
  • 1.5d = 1.5 working days (12 hours)

Unit Requirement

All estimates must include a recognized time unit. Entering a bare number without a unit (e.g. 5) will cause an error asking for the time unit.

Formatting

When rendered in the user interface, values are rounded to the two most significant units for clean readability (for example, 90,000 seconds is displayed as 3d 1h).

Still have questions? Contact our friendly support team, we are here to help!