Legacy TOEFL
TOEFL 60 → IELTS 5.5–6.0 range depending on the concordance framework
New TOEFL
TOEFL 4.0 → approximately IELTS 6.0
TOEFL 4.5 → approximately IELTS 6.5
TOEFL 5.0 → approximately IELTS 7.0
TOEFL 5.5 → approximately IELTS 7.5
TOEFL 6.0 → IELTS 8.0–9.0 range in the new published concordance framework
