Nursing Maths & Shift Toolkit

Nursing Maths Practice

• Nursing Maths Practice

  Practice percentage, ratio, unit conversion and fictional medication maths with worked solutions.

Shift and time tools

Use Time Duration Calculator to work out how long a single shift lasted, including an overnight shift. Enter the actual start and end date and time, and the calculation handles the change of day correctly. It can also account for an optional break, entered as whole hours and minutes, to give worked time alongside elapsed time.

Use Hours Calculator to add up several already-known shift durations into a total. Neither tool is payroll software, and neither gives payroll or entitlement advice.

• Time Duration Calculator

  Calculate the duration between two times.

• Hours Calculator

  Add up worked hours across multiple shifts or time periods.

Useful conversion tools

• Mass & Weight Converter

  Convert between metric and imperial mass and weight units.

• Volume Converter

  Convert between metric and imperial volume units.

• Temperature Converter

  Convert between Celsius, Fahrenheit and Kelvin.

• Adult BMI Calculator

  Calculate Body Mass Index (BMI) for adults from height and weight.

Useful maths tools

• Percentage Calculator

  Work out percentages, percentage of a number, and reverse percentages.

• Ratio Calculator

  Simplify ratios and scale them up or down.

Safe use

Practice only. Medication and infusion examples in Nursing Maths Practice are fictional. Do not enter or rely on Xiliro for a real prescription, patient-specific dose, or clinical decision. Follow your local medicines policy and seek appropriate supervision when required.

Sources

Nursing Maths Practice's professional framing and dose-writing conventions are checked against the following sources. Xiliro is not endorsed by, or affiliated with, any of them.

• Nursing and Midwifery Council: The Code. Sets out professional standards, competence and safety context: it asks nurses, midwives and nursing associates to work within the limits of their competence, preserve safety, reduce the risk of mistakes, and follow appropriate medicines guidance.
• Medicines and Healthcare products Regulatory Agency: Best practice in the labelling and packaging of medicines. Supports avoiding an unnecessary trailing zero after a decimal point, and writing "micrograms" in full rather than abbreviating it. This is MHRA guidance, not NMC guidance.
• Royal Cornwall Hospitals NHS Trust: The Medicines Policy, Chapter 2, Standards of Practice Prescribing (V6.0). Supports the leading-zero example for a decimal quantity below one. This is one NHS Trust's own prescribing policy, used here as a UK prescribing-safety reference. It is not presented as a national NHS-wide rule.

Nursing content reviewed: 17 September 2026.