changefailurerate.com

Change failure rate calculator: 30-day window

The DORA-default reporting window. Stable enough for cross-team comparison, fresh enough for monthly review.

OW
Oliver Wakefield-Smith
Founder, Digital Signet. Built siemcost / monitoringcost / itbudgetcalculator.
Updated 21 Jun 2026
Direct answer
30-day rolling is the DORA-default change failure rate reporting cadenceDORA Four Keys2024. It smooths single-deploy noise while staying fresh enough for monthly board cycles. Use it as your default unless you ship under ~5 deploys per week.
Window:
0%25%50%+
14.3%
37th percentile vs 2025 DORA distribution
14
Failed
111
Total deploys
across 30 day window
Annual engineering burn at this CFR
$186,960/yr
Customer-impact churn estimate: $447,720/yr at 35% customer-facing failure rate.

Where your team plots vs DORA cohort

CFR (y) by deploys per week (x). Elite teams sit bottom-right: high throughput, low failure.

0%10%20%30%40%010204060youdeploys per weekCFR %
elite cohort high medium low your team

Would a DORA vendor pay back at this CFR?

Assumes a 40% CFR reduction (the published Sleuth median, scaled). Quote-only vendors do not display a per-seat rate.

Sleuth
pricing source
Free tier (up to 10 developers, basic DORA metrics)
Vendor / mo
$4,500
Burn saved / mo
$6,232
Payback
0.7 mo
LinearB
pricing source
Essentials $29/user/month (annual, includes 1,000 credits)
Vendor / mo
$5,220
Burn saved / mo
$6,232
Payback
0.8 mo
Jellyfish
pricing source
Quote-only (typical deals $30K-$100K+ ARR)
Quote-only vendor. We do not infer per-seat rates for this site; contact sales for a published number.
Faros AI
pricing source
Faros CE: free self-hosted. Faros AI hosted: contact sales.
Quote-only vendor. We do not infer per-seat rates for this site; contact sales for a published number.
DX
pricing source
Quote-only (positioning to 500+ engineer orgs)
Quote-only vendor. We do not infer per-seat rates for this site; contact sales for a published number.
Swarmia
pricing source
$20/developer/month (published)
Vendor / mo
$3,600
Burn saved / mo
$6,232
Payback
0.6 mo
Pluralsight Flow (Appfire)
pricing source
Quote-only (Appfire-managed)
Quote-only vendor. We do not infer per-seat rates for this site; contact sales for a published number.
Haystack
pricing source
Quote-only (per developer)
Quote-only vendor. We do not infer per-seat rates for this site; contact sales for a published number.

Why 30 days

The DORA survey collects responses on a roughly quarterly cadence and asks teams to describe typical 30-day performance windows DORA 20242024. Reporting on the same window you benchmark against eliminates one comparison-bias source.

Exec-review thresholds

A common pattern: red-flag CFR > 22% (rough 78th percentile of the 2025 DORA cohort, equivalent to the old DORA "Low" band DORA 2023 Report2023), watch-list 15-22%, green < 15%. The mint elite band (< 2%) is realistic only for a small share of teams.

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