Cambridge to IELTS スコア換算 2026

A Cambridge B2 First score of 160 or above corresponds approximately to IELTS 5.5-6.0. This is the minimum passing grade for FCE and demonstrates upper-intermediate English ability at CEFR B2. Many candidates who pass B2 First at this level find they can achieve IELTS 6.0 with targeted preparation, as the skills tested overlap significantly.

For immigration purposes, IELTS 6.0 is the minimum for many skilled migration pathways in Australia and Canada. If you hold a B2 First certificate at 160-175, you should expect to need some IELTS-specific preparation — particularly for the Writing and Speaking formats, which differ substantially from the Cambridge exam structure.

A Cambridge C1 Advanced score of 180 or above corresponds approximately to IELTS 6.5-7.0. Scoring 180+ on C1 Advanced places you at the Grade C threshold, confirming CEFR C1 competence. This is one of the most frequently searched conversions because IELTS 6.5-7.0 is the standard requirement for competitive postgraduate programmes and many professional registration bodies.

If you scored C1 Advanced at 185+, your English proficiency aligns with IELTS 7.0, which qualifies as 'proficient' English for Australian immigration and meets the entry requirements for most MBA and master's programmes worldwide. The key difference is that your Cambridge certificate never expires, while an IELTS score is valid for only two years.

A Cambridge C2 Proficiency score of 200 or above corresponds approximately to IELTS 8.0. Achieving 200+ on C2 Proficiency demonstrates near-native English ability at CEFR C1-C2 level. This score exceeds the requirements for virtually all university programmes and meets the highest immigration English thresholds.

C2 Proficiency at 230+ maps to IELTS 9.0, the highest possible band. Very few candidates reach this level on either test. If you hold a CPE certificate at 200+ and need an IELTS score, be aware that IELTS 8.0+ requires exceptional performance across all four sections, and the timed pressure of IELTS (2 hours 45 minutes in a single sitting) differs from the multi-day Cambridge exam format.

A Cambridge score of 176 sits right at the boundary between B2 and C1 on the Cambridge English Scale. This corresponds approximately to IELTS 6.5. Candidates at this level have demonstrated strong B2+ competence and are approaching C1, which is why the IELTS mapping places them at the upper end of the 6.5 range.

This is a critical threshold because IELTS 6.5 is the minimum for many university programmes and several immigration categories. If your Cambridge score is 176-184, you are in the IELTS 6.5 equivalent range. Pushing to 185+ would move you into the IELTS 7.0 equivalent, which opens significantly more opportunities for postgraduate study and professional registration.

Validity period: Cambridge certificates never expire — once you pass, your qualification is recognised for life. IELTS scores expire two years after the test date. This is the most significant practical difference between the two. If you need proof of English for a specific application within a two-year window, IELTS works. If you want a permanent qualification, Cambridge is the better investment.

Exam structure: Cambridge exams are level-specific: you choose B2 First, C1 Advanced, or C2 Proficiency based on your estimated ability. If you underperform, you may receive a certificate at a lower level or fail entirely. IELTS is a single test that assigns a band score based on your performance — there is no pass or fail, and the same test covers the full ability range from 4.0 to 9.0.

UK recognition: Cambridge qualifications have strong recognition in the UK and across Europe, particularly for education and employment. IELTS has broader global acceptance for immigration purposes and is the dominant English test for visa applications in Australia, Canada, New Zealand, and the UK (via UKVI). For US university admissions, both are widely accepted, though IELTS has slightly broader coverage.

形式： Cambridge試験はReading & Use of English、Writing、Listening、Speakingの4パートで構成され、Use of English（語彙・文法の知識）が含まれる点がIELTSと異なります。IELTSにはUse of Englishセクションがなく、代わりにWriting Task 1（グラフ記述）があります。

移民申請（オーストラリア、カナダ、英国、ニュージーランドなど）ではIELTSが事実上の必須です。Cambridge試験は移民申請に使用できません。ビザや永住権の申請にはIELTS（またはPTEなどの指定代替テスト）が必要です。

急いでスコアが必要な場合もIELTSが適しています。IELTSのコンピュータ版なら3〜5日で結果が届き、Cambridge試験の2〜4週間と比較して大幅に速いです。出願締め切りが迫っている場合はIELTSが有利です。

IELTS also offers greater flexibility for candidates who are unsure of their level. Because IELTS assigns a band score across the full range, you do not need to choose an exam level in advance. With Cambridge, choosing the wrong level (e.g., sitting C1 Advanced when you are at a B2 level) risks failing the exam entirely.

永久に有効な英語資格が必要な場合、Cambridge試験が最適です。IELTSの2年制限が不利な状況——たとえば将来の就職活動や、数年後の大学院出願など——ではCambridgeの永久資格が大きな利点です。

ヨーロッパで就職活動をする場合もCambridge試験が有利です。ヨーロッパの多くの雇用主は「B2以上の英語力」をCambridge証明書で確認しており、IELTSスコアよりも馴染みがある場合があります。Use of English（語彙・文法）に自信がある場合もCambridgeが向いています。

Cambridge is also a better fit if you want to demonstrate general English level rather than meeting a specific score requirement. The certificate grades (A, B, C) provide a clear indication of your ability level that employers understand without needing to interpret a numerical band score. For job applications within Europe, a Cambridge certificate is often preferred over an IELTS score.

B2 First合格者（IELTS 5.5〜6.0相当）の場合、IELTSではTask 1のグラフ記述とSpeakingの形式に慣れる必要があります。CambridgeのUse of Englishで培った語彙・文法力はIELTSでも大いに活かせます。

C1 Advanced合格者（IELTS 7.0〜7.5相当）の場合、IELTSの問題形式への慣れが主な課題です。特にTrue/False/Not Given、マッチング形式はCambridgeにないタイプです。Writingではアカデミックエッセイの構成力が重要です。

C2 Proficiency合格者（IELTS 8.0以上相当）の場合、英語力は十分です。IELTSの問題形式に慣れるための1〜2週間の練習が推奨されます。時間配分の感覚を身につけることが最も重要です。

For Reading and Listening, the skill requirements are very similar, but IELTS uses question types like True/False/Not Given, matching headings, and sentence completion that may be unfamiliar if you have only prepared for Cambridge exams. Spend time learning these IELTS-specific question formats rather than drilling general comprehension skills you already have.