How long will that take? Use this calculator to provide better answers to that question for your technical and programming tasks. You should not estimate a task without a good understanding of the specification, acceptance criteria, user story, and wireframes, and remember an estimate is not a commitment.

Uses PERT calculation for most likely estimate. Formula is (Optimistic + (4 x Most Likely) + Pessimistic) / 6

MOST LIKELY

Uses the mean for a 'three point estimate'. Formula is (Optimistic + Most Likely + Pessimistic) / 3

AVERAGE

A low standard deviation means that most of the numbers are close to the average,
while a high standard deviation means that the numbers are more spread out. Formula is (Pessimistic - Optimistic) / 6

Standard Deviation: 1.43

A low variance means that most of the numbers are close to the average,
while a high variance means that the numbers are more spread out. Formula is ((Pessimistic - Optimistic) / 6) ^ 2

Variance: 1.55

Your average estimate (5 days) is more than a full 10 day sprint. Try to break the task down into sub-tasks. Ideally, a feature should take no more than 1 sprint, and a task no more than 3 days.

High Estimate

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68% confidence between

Within one standard deviation from the mean.

1 and 2

days

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95% confidence between

Within two standard deviations from the mean.

1 and 2

days

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