WSJF stands for Weighted Shortest Job First, a prioritization model from the Scaled Agile Framework. It ranks work by cost of delay divided by job size, so the most valuable, smallest jobs rise to the top. The idea is to maximize the value delivered per unit of effort and time.

What is the WSJF formula?

WSJF equals cost of delay divided by job size. Cost of delay is the sum of three factors: user or business value, time criticality, and risk reduction or opportunity enablement. So WSJF equals (value + time criticality + risk reduction) divided by job size. The higher the score, the sooner the item should be done.

How do you score WSJF?

Score each of the three cost-of-delay factors and the job size on a relative scale, often a modified Fibonacci sequence or a simple 1 to 10. Scores are comparative, not absolute, so rank items against each other rather than trying to find a true value. Then let the formula sort the backlog by WSJF descending.

WSJF Prioritization Calculator

Rank a backlog the SAFe way. Score each item on user/business value, time criticality, and risk reduction over its job size, and the calculator computes Weighted Shortest Job First and sorts the highest-priority work to the top. Everything saves in your browser. No signup.

Rank	Item	Business Value	Time Criticality	Risk Reduction	Cost of Delay	Job Size	WSJF

WSJF = (Business Value + Time Criticality + Risk Reduction) ÷ Job Size. Score each factor 1 to 10. Higher WSJF means do it sooner.

How to use the WSJF calculator

Weighted Shortest Job First is the Scaled Agile Framework's answer to a crowded backlog. It ranks work by cost of delay divided by job size, which captures a simple truth: the best things to do first are the ones that deliver the most value for the least effort and that hurt the most to postpone. Score each item on the three cost-of-delay factors and on size, and the math does the sequencing.

Score relatively, not absolutely. The numbers only matter compared to each other, so rank items against the rest of the list rather than agonizing over whether something is a true 7 or 8. Business value is the upside to users or the business, time criticality is how fast that value decays if you wait, and risk reduction is how much the work de-risks or unlocks future work. Job size is your effort estimate. A small, high-value, time-sensitive item will float to the top, which is exactly where it belongs.

Common mistakes to avoid

Treating the scores as precise. WSJF is a relative ranking tool, not an exact valuation.
Inflating job size estimates for work you want to defer, or shrinking them for work you like.
Ignoring time criticality. A modest item that loses all its value next quarter can rightly beat a bigger one that can wait.
Never revisiting the list. Re-score as you learn, because both value and size estimates change.

For a different lens on the same problem, try the effort/impact prioritization matrix or the weighted decision matrix.

Built by Arsenii Samoilov, a Senior Technical Program Manager with 19+ years at Intuit, Atlassian, Adobe, Salesforce, Roku, and Apple. If your team needs help standing up program governance, get in touch.

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