Cambridge Score Converter
Not sure what your score means on the Cambridge English Scale? This tool converts instantly between percentages and Cambridge Scale scores for any exam level. Select your level, enter a value, and get the result — including your grade.
Select your exam level
What is the Cambridge English Scale?
The Cambridge English Scale is the reporting system used for all Cambridge English General qualifications. It runs from 80 to 230 and maps your exam performance to a single comparable score, regardless of which exam you sit or which session you take it in. Each exam level occupies a specific band within this range: A2 Key sits between 80 and 150, B1 Preliminary between 100 and 170, B2 First between 120 and 190, C1 Advanced between 142 and 210, and C2 Proficiency between 162 and 230.
The scale was designed so that the same score means the same level of English across all exams and all sessions, even when one sitting is slightly harder than another. Cambridge achieves this through a statistical process called equating, applied to every exam sitting.
How does the score conversion work?
Cambridge does not convert percentages to scale scores using a fixed formula. Instead, raw marks are converted using equating tables specific to each exam session. The conversion tables used in this tool are based on official guidance published by Cambridge Assessment English and reflect the typical figures used across exam sittings.
Because of equating, there is not always a one-to-one correspondence between every integer percentage and a Cambridge Scale score. Some percentage values map to the same scale score, and in a small number of cases a specific percentage has no direct equivalent — shown here as Not achievable (A2) or Not reported (B1 and above). This is normal behaviour, not an error.
Grade boundaries at a glance
Each Cambridge English exam awards grades based on the following Cambridge Scale boundaries:
| Exam | Grade C – Pass | Grade B – Pass | Grade A – Pass | Level below (Fail) |
|---|---|---|---|---|
| A2 Key (KET) | 120 – 132 | 133 – 139 | 140 – 150 | 100 – 119 (A1) |
| B1 Preliminary (PET) | 140 – 152 | 153 – 159 | 160 – 170 | 120 – 139 (A2) |
| B2 First (FCE) | 160 – 172 | 173 – 179 | 180 – 190 | 140 – 159 (B1) |
| C1 Advanced (CAE) | 180 – 192 | 193 – 199 | 200 – 210 | 160 – 179 (B2) |
| C2 Proficiency (CPE) | 200 – 212 | 213 – 219 | 220 – 230 | 180 – 199 (C1) |
Want to calculate your full score?
This converter is designed for quick score-to-percentage lookups. If you want a detailed calculation from raw marks across each exam section — Reading, Writing, Listening, and Speaking — use one of the full interactive calculators: