Apparel Manufacturing Calculators & Tools
Save hours on costing, planning, and sourcing. Use our free calculators to convert fabric units, estimate consumption, build quick cost sheets, and plan packaging & shipping—built for brands, buyers, and garment factories.
Quick Jump: Fabric Converters · Costing & Pricing · Size & Fit · Packaging & Shipping · Production & QC
Fabric & Unit Converters
GSM ↔ oz/yd² Converter
Convert fabric weight between GSM and oz/yd² for sourcing, spec sheets, and tech packs. Type in either field—results update instantly.
Quick Fabric Weight Reference (GSM)
| Use case | Typical GSM | Notes |
|---|---|---|
| Lightweight tees | 120–160 | Soft handfeel, warmer climates |
| Standard tees | 160–220 | Most common retail range |
| Polo piqué | 180–260 | Depends on knit structure |
| French terry | 240–320 | Good for sweatshirts |
| Fleece hoodies | 280–400 | Heavier = warmer, higher cost |
| Woven shirts / chinos | 120–280 | Varies by fiber & weave density |
Formula: oz/yd² = GSM ÷ 33.9057 · GSM = oz/yd² × 33.9057
Meter ↔ Yard Converter
Convert fabric length between meters and yards for purchase orders, quoting, and production planning. Type in either field—results update instantly.
Formula: yd = m × 1.093613 · m = yd × 0.9144
CM ↔ Inch Converter
Convert measurements between centimeters and inches for garment specs, pattern notes, fabric width, and carton dimensions. Type in either field—results update instantly.
Formula: in = cm ÷ 2.54 · cm = in × 2.54
Denier ↔ Tex ↔ Dtex Converter
Convert yarn linear density units used in textile specifications. Enter a value in any field—others update instantly.
Formulas (click to expand)
- Tex = Denier ÷ 9
- Denier = Tex × 9
- Dtex = Tex × 10
- Tex = Dtex ÷ 10
- Dtex = Denier × (10/9)
- Denier = Dtex × (9/10)
Costing & Pricing
Margin vs Markup Calculator
Enter unit cost and selling price to calculate profit, margin %, and markup %. Built for apparel costing and wholesale pricing.
What’s the difference? (quick reminder)
- Profit = Price − Cost
- Margin % = Profit ÷ Price × 100
- Markup % = Profit ÷ Cost × 100
Quick Cost Sheet Calculator (Simple)
Fast apparel costing for quoting. Enter your fabric price and estimated consumption, then add trims, CMT, packaging, waste, overhead, and target profit to get a quick unit cost and target price.
How the calculator works (simple model)
- Material cost = Fabric (price × consumption) + trims + packaging
- Base cost = Material cost + CMT
- Waste adds a % on base cost
- Overhead adds a % on (base + waste)
- Target price = Unit cost × (1 + profit %)
Price Break Calculator (Tiered Pricing)
Create tiered pricing for different quantities. Add a fixed fee (e.g., sampling / pattern / development) and see how it spreads across unit price at each tier.
| Tier | Quantity | Base Unit Price | Fixed Fee / piece | Final Unit Price | Total Value | Savings vs Prev |
|---|---|---|---|---|---|---|
| Enter tier values to see results. | ||||||
Notes (how to use)
- Base unit price should exclude one-time fees (sampling/pattern). Add those in “Fixed Fee”.
- If you choose “Unit price (spread per tier)”, the fixed fee is divided by tier quantity and added into unit price.
- If you choose “Total only”, unit price stays the same; fixed fee is added as a separate line item in total.
Waste & Overrun Calculator
Estimate how many extra pieces (overrun) and how much extra fabric/material you should plan for based on waste rate. Useful for bulk production to reduce shortage risk.
What’s the difference between the two methods?
- Add % on top: Production = Order × (1 + waste%). Simple, but may under-deliver if waste is realized.
- Ensure deliverable qty: Production = Order ÷ (1 − waste%). Better when you must deliver exact quantity.
Size & Fit
International Size Converter (US / EU / UK / Asia)
Select a category, then choose an input region and size to see conversions. Apparel sizes vary by brand—use the measurement range shown as the most reliable reference.
Size Chart Generator (Template Builder)
Build a clean size chart template for apparel pages. Choose a category, size range, and units. You can edit values, then copy as HTML (for WordPress/Elementor) or TSV (for Google Sheets/Excel).
Template assumptions (important)
- Values are garment measurements (flat measurements), not body measurements.
- Switching units converts existing values: 1 in = 2.54 cm.
- Brands grade differently. Always confirm with your tech pack / sample.
Packaging & Shipping
Carton CBM & Dimensional Weight Calculator
Calculate carton volume (CBM) and dimensional weight for shipping. Enter carton dimensions and carton count. Optionally enter actual gross weight to compare against billable weight.
How dimensional weight is calculated
- CBM/carton = (L × W × H) in meters
- Dim weight (kg) (cm) = (L × W × H) ÷ divisor
- Common divisors: 6000 (air), 5000 (express). Carriers vary.
- Billable weight is usually max(actual gross, dimensional).
- For sea/LCL, pricing may be by CBM (and sometimes “1 CBM ≈ 167 kg” as a rule of thumb).
Container Loading Estimator (20GP / 40GP / 40HQ)
Estimate how many cartons fit in standard containers. This is a fast rule-based estimate (rectangular packing with optional rotation). Real loading depends on pallets, safety space, carton strength, and stowage practices.
| Container | Internal (L×W×H) | Per layer | Layers | Max cartons | Volume used | Status vs target |
|---|---|---|---|---|---|---|
| Enter carton dimensions to see results. | ||||||
Notes (assumptions & typical container dimensions)
- Uses common internal dimensions (approx): 20GP 5.90×2.35×2.39 m, 40GP 12.03×2.35×2.39 m, 40HQ 12.03×2.35×2.69 m.
- “Allow rotation” tests both (L×W) and (W×L) and chooses the better fit.
- “Reserve space” reduces usable volume for air bags, bracing, or uneven packing.
Production & QC
AQL Sampling Calculator (Basic)
Estimate sample size and Accept/Reject numbers for a production lot using a common AQL sampling plan (Normal inspection, General inspection level). For brand-specific requirements, always follow the buyer’s QC spec.
| What this means | Interpretation |
|---|---|
| Accept (Ac) | If total defects of the selected type ≤ —, the lot passes. |
| Reject (Re) | If total defects ≥ —, the lot fails (reject / rework / 100% check). |
| Scope | This calculator is a basic implementation for quick planning: Normal inspection · General levels · Single sampling |
Important notes (avoid disputes)
- Buyers may use different settings: tightened/reduced inspection, or special levels (S-1~S-4).
- Some clients use different AQL for Critical/Major/Minor (e.g., 0 / 2.5 / 4.0). This tool calculates one AQL at a time.
- Always confirm the exact standard (e.g., ANSI/ASQ Z1.4 or ISO 2859-1) and plan requested by the customer.
Lead Time Estimator (Sampling + Bulk Production)
Estimate end-to-end apparel lead time with a practical timeline split into milestones. This gives a planning range (best-case vs buffered). Always confirm with your factory schedule and material availability.
| Phase | Best-case (work days) | Buffered (work days) | Why it matters |
|---|---|---|---|
| Enter inputs to generate a breakdown. | |||
How this estimator works
- Uses working days (Mon–Fri) for production steps, then converts to calendar dates using the start date.
- Best-case assumes smooth approvals; buffered adds realistic slack for revisions, delays, and scheduling.
- Material steps dominate lead time when you use custom fabric/trims (dye/print/knit/custom labels).
