Paper Core Weight Calculator – Free Online Tool (2025)

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Paper Core Weight Calculator
✅ Free Online Tool  •  Updated 2025
Instantly calculate the weight and cost of any paper core. Enter Length, Inner Diameter (ID), and Wall Thickness in millimeters for accurate results. Designed for professionals in packaging, textile, film, foil, and paper roll manufacturing.
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💰 Optional — Price Calculation
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📐 Calculation Formula
Weight (kg) = π × (ID + Thickness) × Length × Thickness × 730 ÷ 10⁹

Where:
 • ID        = Inner Diameter (mm)
 • Thickness = Wall Thickness (mm)
 • Length    = Core Length (mm)
 • 730       = Paperboard density (kg/m³)

Price per piece (₹) = Weight (kg) × Rate per kg (₹)
📋 About Paper Cores

A paper core (also called paper tube, fiber core, or cardboard core) is a hollow cylindrical tube manufactured by winding multiple layers of paperboard together.

🏭 Industries That Use Paper Cores
  • 📦 Paper & Packaging – Newsprint, kraft paper, tissue, wrapping paper
  • 🧵 Textile Industry – Yarn, thread, and fabric winding
  • 🎞️ Film & Foil – BOPP film, aluminum foil, stretch film, cling wrap
  • 🖨️ Printing Industry – Offset paper, coated stock, label reels
  • 🏗️ Construction – Carpet rolls, flooring material, insulation wrap
🔢 How to Use This Calculator
  • Step 1 – Enter Length in mm (e.g., 1000 mm)
  • Step 2 – Enter Inner Diameter (ID) in mm (e.g., 76 mm)
  • Step 3 – Enter Wall Thickness in mm (e.g., 3 mm)
  • Step 4 – (Optional) Enter Rate per kg (₹)
  • Step 5 – Click "Calculate" — instant results
📏 Common Paper Core Sizes
  • ID 25 mm (1 inch) – Label rolls, adhesive tape
  • ID 76 mm (3 inch) – Tissue rolls, paper towels
  • ID 152 mm (6 inch) – Industrial paper, film rolls
  • Wall Thickness 2–10 mm – Light to heavy-duty
✅ Key Benefits
  • ✔️ 100% Free – No registration required
  • ✔️ Instant Results – Accurate weight and price in one click
  • ✔️ Mobile Friendly – Works on all devices
  • ✔️ Accurate Formula – Industry-standard density 730 kg/m³
  • ✔️ Price Calculator Built-in – Cost per piece included
❓ Frequently Asked Questions
Q1. How do you calculate the weight of a paper core?
Weight (kg) = 3.14 × (ID + Thickness) × (Length × Thickness × 730) / 1,000,000,000. All in mm. 730 = standard paperboard density kg/m³.
Q2. What density is used for paper core calculation?
Standard density of wound paperboard is approximately 730 kg/m³.
Q3. What is the difference between a paper core and a paper tube?
Same product — also called cardboard cores, fiber cores, or mill cores depending on industry and region.
Q4. How is price per piece calculated?
Price = Weight (kg) × Rate per kg (₹). Enter rate in the optional field — calculator does it automatically.
Q5. Does this work on mobile?
Yes! Fully responsive — works on Android, iPhone, tablets, and desktops.

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