Enter your figures
Use the values that match your situation and the units shown in the form.
Standard score (z-score) for this calculator. Subtract the mean from the observation, then divide by the standard deviation. Standard deviation must be positive and all values must use the same units; this is not a probability or percentile.
Use the values that match your situation and the units shown in the form.
Results include the main answer plus supporting figures where useful.
Tax, benefits and legal thresholds can change or depend on individual circumstances.