01 · SUS SCORE & BENCHMARK
One number, fully benchmarked.
Score · Grade · Percentile · Acceptability · Pass rate · Cronbach's α.
Skari computes the validated 0–100 SUS score from the 10 standard items, places it on the Sauro-Lewis percentile scale, assigns a letter grade (A–F) and Bangor acceptability label, reports the pass rate (% respondents ≥68), and checks reliability with Cronbach's α.
SUS Score & Benchmark
n=30SUS SCORE
77.9
Grade B · Good
PERCENTILE
78.6%
vs norm (68)
PASS RATE
76.7%
respondents ≥68
ACCEPTABILITY
Acceptable
Bangor scale
RELIABILITY
0.92
Cronbach's α · good
Benchmark Position
Sub-scales
Lewis & Sauro
Usability
77.9
Grade B
Learnability
77.9
Grade B
"Usability" is the weaker dimension at 77.9. Simplifying core flows and reducing friction may help.
Score Distribution
Median 80, SD 14.9. Tight spread — a consistent experience across users.
02 · SUB-SCALES & SCORE DISTRIBUTION
Usability vs Learnability.
Lewis & Sauro sub-scales — where the weakness lies.
The Lewis & Sauro two-factor model splits the SUS into Usability (items 1–8, even-odd) and Learnability (items 4 and 10). Comparing the two scores points to the bottleneck — whether users struggle with ease-of-use or with learning. The Score Distribution chart shows how individual SUS scores spread against the 68 benchmark.
03 · ITEM-LEVEL BREAKDOWN
See which items drag the score down.
Each item scored 0–100. Lowest = biggest opportunity.
Skari scores each of the 10 SUS items on a 0–100 scale (reverse-coded items corrected automatically). The item-level chart ranks them from weakest to strongest so you know exactly which aspect of the experience to improve first. The weakest item is flagged and interpreted.
Item-level Breakdown
0–100 per item · lowest = priority
Weakest item: "I found the system unnecessarily complex." (68.3) — highest priority for improvement.
Segment Analysis
Age range55+ segment scores near the 68 pass line — may benefit from simplified navigation.
04 · SEGMENT ANALYSIS
Does usability differ by user group?
Compare SUS scores across any survey dimension.
Select any categorical question to split respondents into segments — by age, device, experience level, or role. Skari computes a separate SUS score and grade for each group, making it easy to spot which segment has the worst experience and needs the most attention.
IN THE REPORT
Everything the SUS report delivers.
10 items in — score, grade, sub-scales, and diagnosis out.
SUS score
Validated 0–100 score from the 10 standard items.
Letter grade
A–F grade with Bangor acceptability label.
Percentile vs norm
Sauro-Lewis percentile against the 68 benchmark.
Pass rate
Share of respondents scoring at or above 68.
Sub-scales
Usability vs Learnability two-factor split.
Score distribution
How individual scores spread against the norm.
Item-level breakdown
Each item scored 0–100 to find the weakest.
Reliability check
Cronbach’s α to confirm internal consistency.
Segment comparison
SUS score and grade by any survey dimension.
Auto interpretation
Plain-language reading of the result and priorities.
ALSO IN SURVEY ANALYSIS
Explore more survey tools.
Each method answers a different question — same interface, different lens.
Measure usability the standard way.
10 items in · SUS score, grade, percentile, sub-scales, item breakdown, and segment analysis out.