Infant Mortality Rate Calculator

Work out infant mortality rate instantly with clear inputs, formula shown and shareable results.

About Infant Mortality Rate Calculator

Divides deaths under one year by live births in the same period and expresses the result per 1,000 live births.

Formula

Infant mortality rate

IMR = deaths under 1 year / live births x 1000

Worked example

With the default values below, Infant Mortality Rate Calculator returns Infant mortality rate of 12.000. Change any input above and every figure here is recalculated in your browser.

Inputs used

Deaths under one yearaccepts 0–1,000,000: 240
Live birthsaccepts 1–100,000,000: 20,000

Results

Infant mortality rate: 12.000 per 1000 live births
Infants surviving per 1,000 births: 988.000
Average infant deaths per day: 0.658
Rate expressed as a percentage: 1.2000%

Step by step

1Values used
2Infant mortality rate
3Infant mortality rate= 12.000 per 1000 live births
4Infants surviving per 1,000 births= 988.000
5Average infant deaths per day= 0.658
6Rate expressed as a percentage= 1.2000

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 4 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why per 1,000 live births?

It is the international convention, and the denominator is births rather than the infant population so it can be compared across systems.

Is the denominator strictly correct?

Not exactly, because some deaths belong to the previous birth cohort; cohort life tables correct for this.