{
    "name": "Sewing Line Efficiency Calculator",
    "url": "https://calculators.geekmidst.com/calculators/sewing-line-efficiency-calculator",
    "markdown": "https://calculators.geekmidst.com/calculators/sewing-line-efficiency-calculator.md",
    "category": "Textile & apparel",
    "description": "Measure sewing line efficiency as (output × SMV) ÷ (operators × working minutes), with the 100% target and pieces per hour.",
    "summary": "Line efficiency compares the standard minutes the line produced (pieces × SMV) with the minutes its people were available.",
    "also_called": [
        "Line efficiency calculator",
        "Garment line efficiency 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": "output",
            "label": "Pieces produced",
            "type": "number",
            "default": "600",
            "unit": "pcs"
        },
        {
            "name": "smv",
            "label": "Garment SMV",
            "type": "number",
            "default": "12",
            "unit": "min"
        },
        {
            "name": "operators",
            "label": "Operators and helpers",
            "type": "number",
            "default": "40"
        },
        {
            "name": "hours",
            "label": "Working hours",
            "type": "number",
            "default": "8",
            "unit": "h"
        }
    ],
    "outputs": [
        {
            "key": "efficiency",
            "label": "Line efficiency",
            "format": "percent"
        },
        {
            "key": "produced_minutes",
            "label": "Standard minutes produced",
            "format": "number"
        },
        {
            "key": "available_minutes",
            "label": "Minutes available",
            "format": "number"
        },
        {
            "key": "target_100",
            "label": "Output at 100% efficiency",
            "format": "integer"
        },
        {
            "key": "pieces_per_hour",
            "label": "Pieces per hour",
            "format": "number"
        }
    ],
    "formula": {
        "text": "Efficiency % = Output × SMV ÷ (Operators × Hours × 60) × 100;  Target at 100% = Operators × Hours × 60 ÷ SMV",
        "variables": {
            "SMV": "standard minute value of the whole garment",
            "Operators": "everyone on the line whose time is counted"
        }
    },
    "worked_example": {
        "inputs": {
            "output": "600",
            "smv": "12",
            "operators": "40",
            "hours": "8"
        },
        "steps": [
            "Produced = 600 × 12 = 7,200 standard minutes.",
            "Available = 40 × 8 × 60 = 19,200 minutes.",
            "Efficiency = 7,200 ÷ 19,200 = 37.5%; at 100% the line would make 19,200 ÷ 12 = 1,600 pieces."
        ],
        "result": "The line ran at 37.5% efficiency: 600 pieces against 1,600 possible at standard pace."
    },
    "interpretation": "Track it daily per line. Low efficiency points to balancing, absenteeism, waiting for work or quality rework; compare like-for-like by counting helpers the same way every day.",
    "assumptions": [
        "The SMV is correct for the style and includes allowances.",
        "Every operator and helper is present for the full working hours."
    ],
    "limitations": [
        "Use the operator efficiency calculator to separate off-standard time (machine breakdown, no work) from performance."
    ],
    "rules": null,
    "faqs": [
        {
            "question": "Should helpers be counted?",
            "answer": "Most factories count all direct workers on the line, including helpers; whichever you choose, keep it consistent."
        },
        {
            "question": "How do I set an hourly target?",
            "answer": "Target per hour = Operators × 60 ÷ SMV × planned efficiency. At 60% for this line: 40 × 60 ÷ 12 × 0.6 = 120 pieces."
        }
    ],
    "sources": [],
    "related": [
        {
            "name": "Standard Minute Value (SMV) Calculator",
            "url": "https://calculators.geekmidst.com/calculators/standard-minute-value-calculator"
        },
        {
            "name": "Garment Operator Efficiency Calculator",
            "url": "https://calculators.geekmidst.com/calculators/garment-operator-efficiency-calculator"
        },
        {
            "name": "Garment Costing Calculator",
            "url": "https://calculators.geekmidst.com/calculators/garment-costing-calculator"
        }
    ],
    "disclaimer": null,
    "publisher": "GM¹X CalcVerse"
}