Project Timeline & Delay Cost Calculator

ANA›Life Services Authority›National Calculator Authority›Project Timeline & Delay Cost Calculator

.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }

Project Timeline & Delay Cost Calculator

Estimate the total financial impact of construction or project delays, including daily overhead, penalty clauses, and lost opportunity costs.

Daily Project Overhead Cost ($)

All fixed daily costs: equipment rental, site supervision, utilities, insurance, etc.

Number of Delay Days

Total calendar days the project is delayed beyond the scheduled completion date.

Liquidated Damages / Penalty Rate ($ per day)

Contractual penalty charged per day of delay. Enter 0 if not applicable.

Daily Labor Cost ($)

Total daily wages and benefits for all workers kept on-site during the delay.

Total Contract Value ($)

The full value of the project contract. Used to calculate opportunity cost.

Opportunity Cost Rate (% per year)

Annual return rate you could have earned deploying capital elsewhere (typical: 6–12%).

Material Cost Escalation per Delay Day ($)

Estimated daily increase in material costs due to price inflation during the delay period.

Calculate Delay Cost

function proCalc() { var resultDiv = document.getElementById('pro-result');

var dailyOverhead = parseFloat(document.getElementById('pro-daily-overhead').value); var delayDays = parseFloat(document.getElementById('pro-delay-days').value); var penaltyRate = parseFloat(document.getElementById('pro-penalty-rate').value); var laborCost = parseFloat(document.getElementById('pro-labor-cost').value); var contractValue = parseFloat(document.getElementById('pro-contract-value').value); var opportunityRate = parseFloat(document.getElementById('pro-opportunity-rate').value); var materialEscalation = parseFloat(document.getElementById('pro-material-escalation').value);

// Validation var errors = []; if (isNaN(dailyOverhead) || dailyOverhead 100) errors.push("Opportunity cost rate must be between 0 and 100."); if (isNaN(materialEscalation) || materialEscalation 0) { resultDiv.innerHTML = 'Please fix the following:' + errors.map(function(e){ return ''; }).join('') + ''; return; }

if (delayDays === 0) { resultDiv.innerHTML = 'No delay days entered. Enter a delay duration to calculate costs.'; return; }

// ── Core Calculations ──────────────────────────────────────────────────────

// 1. Direct Overhead Cost = Daily Overhead × Delay Days var directOverheadCost = dailyOverhead * delayDays;

// 2. Total Labor Cost During Delay = Daily Labor Cost × Delay Days var totalLaborCost = laborCost * delayDays;

// 3. Total Penalty / Liquidated Damages = Penalty Rate × Delay Days var totalPenalty = penaltyRate * delayDays;

// 4. Opportunity Cost = Contract Value × (Annual Rate / 365) × Delay Days // Represents the time-value of money tied up in the delayed project var dailyOpportunityRate = (opportunityRate / 100) / 365; var opportunityCost = contractValue * dailyOpportunityRate * delayDays;

// 5. Total Material Escalation = Material Escalation per Day × Delay Days var totalMaterialEscalation = materialEscalation * delayDays;

// 6. Total Delay Cost = Sum of all components var totalDelayCost = directOverheadCost + totalLaborCost + totalPenalty + opportunityCost + totalMaterialEscalation;

// 7. Delay Cost as % of Contract Value var delayCostPct = contractValue > 0 ? (totalDelayCost / contractValue) * 100 : 0;

// 8. Average Daily Delay Cost var avgDailyCost = totalDelayCost / delayDays;

// ── Severity Rating ──────────────────────────────────────────────────────── var severity, severityClass; if (delayCostPct ' + 'Delay Duration' + delayDays.toLocaleString() + ' days' + 'Direct Overhead Cost' + fmt(directOverheadCost) + '' + 'Labor Cost During Delay' + fmt(totalLaborCost) + '' + 'Liquidated Damages / Penalties' + fmt(totalPenalty) + '' + 'Opportunity Cost (Capital Tied Up)' + fmt(opportunityCost) + '' + 'Material Cost Escalation' + fmt(totalMaterialEscalation) + '' + 'Total Delay Cost' + fmt(totalDelayCost) + '' + 'Average Daily Delay Cost' + fmt(avgDailyCost) + '' + (contractValue > 0 ? 'Delay Cost as % of Contract' + fmtPct(delayCostPct) + '' : '') + '' + 'Severity: ' + severity + '

' + (delayCostPct >= 5 && contractValue > 0 ? '⚠️ Delay costs exceed 5% of contract value. Consider acceleration measures or renegotiating the schedule.

'
'') + 'All figures are estimates. Consult your contract documents and legal counsel for binding cost determinations.

'; }

#### Formulas Used

1. Direct Overhead Cost = Daily Overhead Cost × Delay Days

2. Labor Cost During Delay = Daily Labor Cost × Delay Days

3. Liquidated Damages = Penalty Rate ($/day) × Delay Days

4. Opportunity Cost = Contract Value × (Annual Opportunity Rate ÷ 365) × Delay Days Reflects the time-value of capital tied up in a stalled project.

5. Material Escalation Cost = Material Escalation Rate ($/day) × Delay Days

6. Total Delay Cost = Overhead Cost + Labor Cost + Penalties + Opportunity Cost + Material Escalation

7. Delay Cost as % of Contract = (Total Delay Cost ÷ Contract Value) × 100

#### Assumptions & References

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References

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