Work out a crude mortality rate per 1,000 and per 100,000 people from deaths and population size.
Result
How to use this tool
Count deaths in the period you are studying.
Use the mid-period population, not the end population.
The advanced section annualises multi-year rates.
Crude rates are not age-adjusted.
Formula & worked example
120 deaths in a population of 50,000 gives 120 / 50,000 x 1,000 = 2.40 deaths per 1,000 people, or 240 per 100,000.
Limitations — read this before you rely on it
Crude rate only, with no age adjustment or confidence interval. Comparisons across unlike populations need age-standardised rates. This tool is for education only and is not medical advice. Talk to a clinician about any result that worries you, and never change treatment because of a calculator result.
Frequently asked questions
Deaths divided by population over a period, with no adjustment for age or other factors.
Scaling makes small rates readable. Per 1,000 suits general populations and per 100,000 suits rarer causes.
A rate recalculated as if populations shared one age structure, allowing fairer comparisons.
Only cautiously. Age structure, registration completeness and cause definitions all differ.
The mid-period population, the standard denominator for a period rate.