25 working tools
Textile and garment calculators
Each calculator validates its inputs, shows the formula and every step of the working, and states its assumptions. Copy the result, export it to CSV or print it.
25 of 25 calculators
Fabric & consumption
- Fabric & consumptionFabric GSM CalculatorCalculate fabric weight in grams per square meter from a cut sample, or estimate it from woven or knitted construction.
GSM = W / A × 10,000 - Fabric & consumptionKnit Fabric Consumption CalculatorEstimate knit fabric consumption in grams per garment and kilograms per dozen from pattern panel sizes, GSM and cutting wastage.
Grams per piece = Σ(L × W × qty) / 10,000 × GSM × (1 + wastage / 100) - Fabric & consumptionWoven Fabric Consumption CalculatorCalculate woven fabric consumption per garment and per dozen from a marker, or estimate it from pattern area, cuttable width and marker efficiency.
Consumption = marker length / garments in marker × (1 + allowance / 100) - Fabric & consumptionT-Shirt Fabric Consumption CalculatorEstimate basic T-shirt fabric consumption in kg per dozen from body length, sleeve length, chest, GSM and wastage using the standard knit formula.
kg/dozen = (body length + sleeve length + allowance) × (½ chest + allowance) × 2 × GSM × 12 / 10,000,000 - Fabric & consumptionHoodie Fabric Consumption CalculatorEstimate hoodie consumption for the main fleece or French terry fabric (body, sleeves, hood, pocket) and the rib fabric (cuffs and waistband) separately.
Main fabric grams = (body area + hood area + pocket area) × GSM / 10,000 × (1 + wastage / 100) - Fabric & consumptionShrinkage Percentage CalculatorCalculate dimensional change after washing in length and width from marked benchmark distances, and the pattern compensation needed.
Dimensional change % = (after - before) / before × 100
Industrial engineering
- Industrial engineeringGarment SMV CalculatorBuild a garment SMV from time study data: observed time, performance rating and allowance for each operation, with basic time and SMV per operation.
Operation SMV = observed seconds / 60 × rating / 100 × (1 + allowance / 100) - Industrial engineeringLine Efficiency CalculatorCalculate sewing line efficiency from output, garment SMV, manpower and working minutes, with earned minutes and available minutes.
Efficiency % = (output × SMV) / (manpower × working minutes) × 100 - Industrial engineeringMachine Requirement CalculatorCalculate how many machines of each type a sewing line needs from the operation breakdown, daily target, working minutes and efficiency.
Machines for an operation = daily target × operation SMV / (working minutes × efficiency) - Industrial engineeringManpower Requirement CalculatorCalculate the number of operators needed to meet a daily target from garment SMV, working minutes, efficiency and absenteeism.
Operators = target × SMV / (working minutes × efficiency) / (1 - absenteeism) - Industrial engineeringTakt Time CalculatorCalculate takt time, the pace at which one unit must be completed to meet customer demand, from available time and demand.
Takt time = available production time / customer demand - Industrial engineeringPitch Time CalculatorCalculate pitch time for sewing line balancing (garment SMV per operator) or lean pitch (takt time × pack-out quantity).
Pitch time = garment SMV / number of operators - Industrial engineeringOEE CalculatorCalculate Overall Equipment Effectiveness from planned time, downtime, ideal cycle time, total count and good count.
OEE = Availability × Performance × Quality
Production
- ProductionProduction Target CalculatorSet daily and hourly sewing line targets from manpower, working hours, garment SMV and planned efficiency.
Target = manpower × working minutes × efficiency / SMV - ProductionGarment Production Capacity CalculatorCalculate sewing capacity in minutes and pieces for a period from lines, operators, hours, working days, efficiency, absenteeism and SMV.
Capacity minutes = lines × operators × (1 - absenteeism) × hours × 60 × days × efficiency - ProductionMarker Efficiency CalculatorCalculate marker efficiency and fabric waste from the total pattern area in the marker, marker length and marker width.
Marker efficiency % = pattern area / (marker length × marker width) × 100 - ProductionThread Consumption CalculatorCalculate sewing thread per garment and cones per order from seam lengths and measured thread-to-seam ratios for each stitch type.
Thread per piece (m) = Σ(seam length × ratio) / 100 × (1 + wastage / 100)
Quality
- QualityDHU Calculator (Defects per Hundred Units)Calculate DHU from defects found and units inspected, and compare it with the percentage of defective units.
DHU = total defects / units inspected × 100 - QualityRFT Calculator (Right First Time)Calculate Right First Time percentage from units checked and units that passed without any rework.
RFT % = units passed first time / units checked × 100 - QualityAQL Sample Size HelperFind the sample size code letter, sample size and accept/reject numbers for single sampling, normal inspection, general inspection levels I, II and III.
Accept the lot if defectives found ≤ Ac; reject if ≥ Re
Costing
- CostingCM Cost CalculatorCalculate cost of making (CM) per piece and per dozen from SMV, cost per minute and efficiency, or derive cost per minute from monthly factory cost.
CM per piece = SMV × cost per minute / efficiency - CostingGarment Costing Calculator (FOB)Build a garment cost sheet from fabric, trims, CM, other processes, commercial cost and profit to reach an FOB price per piece and per dozen.
FOB = (fabric + trims + CM + other) × (1 + commercial %) × (1 + profit %)
Conversion
- ConversionGSM to oz/yd² ConverterConvert fabric weight from grams per square meter (GSM) to ounces per square yard (oz/yd²) with the exact factor.
oz/yd² = GSM / 33.906 - Conversionoz/yd² to GSM ConverterConvert fabric weight from ounces per square yard (common for denim and US specifications) to grams per square meter.
GSM = oz/yd² × 33.906 - ConversionYarn Count ConverterConvert yarn count between Ne, Nm, Tex, dtex, Denier, worsted and linen systems, with folded yarn resultant count.
Tex = 590.54 / Ne = 1000 / Nm = Denier / 9 = dtex / 10