<p>Aim To examine the drug calculation skills of nursing students.</p> <p>Method A mathematics test and a structured questionnaire were used to determine level of skill and perceptions related to mathematics.</p> <p>Results The test revealed difficulties in multiplying fractions and interpreting information, and the questionnaire showed that drug calculation skills were related to education level, confidence and enjoyment of maths at school.</p> <p>Conclusion Nursing students should be given opportunities to improve their maths skills alongside developing their knowledge of drug calculations in clinical practice.</p>