Calculate your daily consumption of Personal Protective Equipment (PPE) and estimate days of supply remaining.
Daily Burn Rate:–
Weekly Burn Rate:–
Monthly Burn Rate (30 Days):–
Estimated Days of Supply:–
Status:–
function calculateBurnRate() {
// Get input values
var staffCount = parseFloat(document.getElementById('ppe_staff_count').value);
var shiftsPerDay = parseFloat(document.getElementById('ppe_shifts_per_day').value);
var changesPerShift = parseFloat(document.getElementById('ppe_changes_per_shift').value);
var currentStock = parseFloat(document.getElementById('ppe_current_stock').value);
// Validation
if (isNaN(staffCount) || isNaN(shiftsPerDay) || isNaN(changesPerShift)) {
alert("Please enter valid numbers for staff, shifts, and usage per shift.");
return;
}
// Calculations
var dailyBurn = staffCount * shiftsPerDay * changesPerShift;
var weeklyBurn = dailyBurn * 7;
var monthlyBurn = dailyBurn * 30;
var daysRemaining = 0;
var statusMsg = "N/A";
var statusClass = "";
if (!isNaN(currentStock) && dailyBurn > 0) {
daysRemaining = currentStock / dailyBurn;
if (daysRemaining < 7) {
statusMsg = "CRITICAL: Restock Immediately";
statusClass = "warning";
} else if (daysRemaining < 14) {
statusMsg = "LOW: Order Soon";
statusClass = "warning";
} else {
statusMsg = "ADEQUATE: Good Supply";
statusClass = "safe";
}
} else if (dailyBurn === 0) {
daysRemaining = Infinity;
statusMsg = "No Consumption";
}
// Display Results
document.getElementById('results-area').style.display = 'block';
document.getElementById('res_daily_burn').innerText = Math.ceil(dailyBurn).toLocaleString() + " units/day";
document.getElementById('res_weekly_burn').innerText = Math.ceil(weeklyBurn).toLocaleString() + " units/week";
document.getElementById('res_monthly_burn').innerText = Math.ceil(monthlyBurn).toLocaleString() + " units/month";
var daysText = (dailyBurn === 0) ? "Infinite" : daysRemaining.toFixed(1) + " Days";
document.getElementById('res_days_remaining').innerText = daysText;
var statusEl = document.getElementById('res_status');
statusEl.innerText = statusMsg;
statusEl.className = "result-value " + statusClass;
}
Understanding PPE Burn Rate
In healthcare and industrial safety contexts, the PPE Burn Rate is a critical metric that indicates how quickly Personal Protective Equipment (such as N95 respirators, surgical masks, gloves, gowns, and face shields) is being depleted. Accurately calculating this rate is essential for supply chain management, ensuring the safety of frontline workers, and preventing critical shortages during periods of high demand.
How to Calculate PPE Burn Rate
The calculation of PPE burn rate can be approached through historical data or projected usage. This calculator uses a projection method based on staffing and protocol intensity:
Staff Count: The total number of personnel who are required to wear specific PPE during their duties.
Shifts Per Day: The number of distinct shifts operating within a 24-hour period (e.g., Day, Night, Swing).
Changes Per Shift: The frequency with which a single staff member replaces their PPE. This is often dictated by infection control protocols (e.g., changing gloves between every patient interaction or changing masks every 4 hours).
Effective inventory management relies on knowing not just how much stock you have, but how long it will last. By monitoring the burn rate, facility managers can:
Forecast Demand: Predict when stock will run out based on current usage patterns.
Optimize Procurement: Place orders with sufficient lead time to avoid stockouts.
Adjust Protocols: In times of severe shortage, administrators may implement conservation strategies (such as extended use or reuse protocols) to reduce the daily burn rate.
Factors Influencing Consumption
Several variables can drastically alter the burn rate of PPE:
Patient Volume: A surge in patient admissions typically leads to a linear or exponential increase in PPE usage.
Isolation Protocols: Patients requiring contact or airborne precautions necessitate higher frequency of PPE changes.
Staff Training: Proper donning and doffing training ensures PPE is used effectively without unnecessary waste.
Using the Days of Supply Estimate
The "Estimated Days of Supply" metric is perhaps the most actionable output of this calculator. It divides your current inventory by the calculated daily burn rate.
< 7 Days: Indicates a critical shortage. Emergency procurement or strict conservation measures are required immediately.
7-14 Days: Indicates a warning level. Orders should be placed immediately to account for shipping delays.
> 30 Days: Generally considered a safe operating margin, though this depends on the reliability of the supply chain.