{
    "name": "First Attempt Delivery Rate Calculator",
    "url": "https://calculators.geekmidst.com/calculators/first-attempt-delivery-rate-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/first-attempt-delivery-rate-calculator.md",
    "category": "Logistics & transport",
    "description": "Calculate your first attempt delivery rate (FADR), the shipments that needed another try and what those re-attempts cost.",
    "summary": "First attempt delivery rate is shipments delivered on the first try divided by shipments that had a first attempt. Each failure costs a re-delivery, a return or a customer contact.",
    "also_called": [
        "FADR calculator",
        "Delivery success rate calculator"
    ],
    "applies_to": "Worldwide",
    "last_updated": "2026-10-29",
    "computation": "Results are computed in the visitor’s browser on the HTML page. This API describes the calculator; it does not compute results.",
    "inputs": [
        {
            "name": "attempted",
            "label": "Shipments with a first attempt",
            "type": "number",
            "default": "12000"
        },
        {
            "name": "first",
            "label": "Delivered on the first attempt",
            "type": "number",
            "default": "10920"
        },
        {
            "name": "redelivery_cost",
            "label": "Cost per failed first attempt",
            "type": "number",
            "default": "4.50",
            "optional": true
        },
        {
            "name": "currency",
            "label": "Currency",
            "type": "currency",
            "default": "USD"
        }
    ],
    "outputs": [
        {
            "key": "rate",
            "label": "First attempt delivery rate",
            "format": "percent"
        },
        {
            "key": "failed",
            "label": "Shipments needing another attempt",
            "format": "integer"
        },
        {
            "key": "failure_rate",
            "label": "First attempt failure rate",
            "format": "percent"
        },
        {
            "key": "redelivery_cost",
            "label": "Cost of failed first attempts",
            "format": "currency"
        }
    ],
    "formula": {
        "text": "FADR = Delivered first time ÷ Shipments with a first attempt × 100;  Failed = Attempted − Delivered first time;  Cost = Failed × Cost per failure",
        "variables": {
            "Shipments with a first attempt": "out-for-delivery shipments that reached a first attempt in the period (excludes ones never dispatched)"
        }
    },
    "worked_example": {
        "inputs": {
            "attempted": "12000",
            "first": "10920",
            "redelivery_cost": "4.50",
            "currency": "USD"
        },
        "steps": [
            "FADR = 10,920 ÷ 12,000 × 100 = 91%.",
            "Failed first attempts = 12,000 − 10,920 = 1,080.",
            "Cost = 1,080 × 4.50 = 4,860."
        ],
        "result": "A 91% first attempt rate means 1,080 shipments needed another try, costing about 4,860."
    },
    "interpretation": "Every point of FADR gained removes a re-attempt for 1% of volume. Track the reasons for failure (not home, wrong address, access) to target the fix: delivery windows, address validation or safe-place options.",
    "assumptions": [
        "Each failed shipment costs the same amount."
    ],
    "limitations": [
        "Definitions vary between carriers; keep the same denominator over time when comparing periods."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "Should customer-requested reschedules count as failures?",
            "answer": "Decide once and be consistent. Many operators exclude customer-requested changes made before the first attempt."
        },
        {
            "question": "Is FADR the same as on-time delivery?",
            "answer": "No. A parcel can be delivered on the first attempt but late, or on time on the second attempt."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Route ETA Estimate Calculator",
            "url": "https://calculators.geekmidst.com/calculators/route-eta-estimate-calculator"
        },
        {
            "name": "Parcel Sorting Throughput Calculator",
            "url": "https://calculators.geekmidst.com/calculators/parcel-sorting-throughput-calculator"
        },
        {
            "name": "Percentage Calculator",
            "url": "https://calculators.geekmidst.com/calculators/percentage-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}