PPE Burn Rate Calculator

Work out ppe burn rate instantly with clear inputs, formula shown and shareable results.

About PPE Burn Rate Calculator

Divides consumption by days to give the burn rate, then divides current stock by that rate to give days of cover, the WHO PPE burn rate method.

Formula

Burn rate

Daily burn rate = units used / days; days of stock remaining = current stock / daily burn rate

Worked example

With the default values below, PPE Burn Rate Calculator returns Daily burn rate of 171.4. Change any input above and every figure here is recalculated in your browser.

Inputs used

Units used in the periodaccepts 1–10,000,000: 1,200
Days in the periodaccepts 1–365: 7
Current stockaccepts 0–10,000,000: 5,000

Results

Daily burn rate: 171.4 units/day
Days of stock remaining: 29.2 days
Weekly consumption: 1,200 units
Reorder status: More than two weeks of cover

Step by step

1Values used
2Burn rate
3Daily burn rate= 171.4 units/day
4Days of stock remaining= 29.2 days
5Weekly consumption= 1,200 units
6Reorder status= More than two weeks of cover

Assumptions and limits

The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or fees or charges into account.
Figures are rounded for display to 1 decimal place, 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 track burn rate rather than stock?

Stock alone says nothing about how long it will last; burn rate converts it into days of cover.

How much cover should be held?

Supply chains typically need four to eight weeks of cover during an outbreak, depending on lead times.