ProPac Tools - Free Corrugated Box, Partition, Roll Weight, Plate Weight Calculator for Packaging Industry

ProPac Tools

Professional Corrugated Box & Packaging Calculator Suite

Box Calculator

Partition Calc New

Roll Calculator

Plate Weight

2-Ply Sheet

Global Preferences

Millimeters (mm) Centimeters (cm) Inches (inch) Kilograms (kg) Grams (g) Metric Tons (ton) Pounds (lb) Ounces (oz) Indian Rupee (INR - ₹) US Dollar (USD - $) Euro (EUR - €) British Pound (GBP - £) Australian Dollar (AUD - A$) Canadian Dollar (CAD - C$) Singapore Dollar (SGD - S$) UAE Dirham (AED - د.إ) Saudi Riyal (SAR - ر.س) Bangladeshi Taka (BDT - ৳) Japanese Yen (JPY - ¥) Chinese Yuan (CNY - ¥)

Dimensions Required

Outer Dimensions

Inner Dimensions

Length (mm)

Width (mm)

Height (mm)

Ply Configuration & GSM Required

Select Box Ply Select Ply 3 Ply 5 Ply 7 Ply

Select ply type first

Pricing & Quantity

Paper Rate per kg Optional

Plate Cost (Total ₹) Optional

Box Quantity Optional

📋 Corrugated Box Partition (Divider) — Complete Guide

What is a partition? Why is it needed? And which products require it? — Find the complete guide below.

A Corrugated Partition (also known as a Divider, Separator, or Cell Insert) is an interlocking cardboard structure placed inside a master shipping box. It divides the box's interior into separate small cells — much like an egg carton has a dedicated slot for every egg. Each product sits safely in its own cell without touching the next one, which prevents scratches, breakage, and damage during handling and transit.

🔩

How Does a Partition Work?

There are two types of strips — Long Strips (placed between rows) and Short Strips (placed between columns). They interlock with each other through half-slot notches, forming a cross-pattern grid. No glue or staples are needed — just a smart mechanical fit.

🛡️

Why Is a Partition Necessary?

Without a partition, products knock against each other during transit — glass breaks, labels get damaged, and cosmetic products get scratched. A partition acts like a protective cushion wall, shielding products from vibration, jerks, and drops.

📐

Why Is Partition Calculation Complex?

Box size, product size, board thickness, clearance margin, and layers all need to be calculated together. Even a single wrong measurement makes the partition too tight or causes the slots to misalign. This calculator automates all of that in just seconds.

What products require a partition? — A partition is an industry-standard packaging requirement for the products listed below:

🍾 Glass Bottles & Jars 💊 Pharma Vials & Ampoules 🧴 Cosmetic Bottles 🥂 Wine & Liquor Bottles 💡 Light Bulbs & CFL 🔩 Industrial Hardware 🖋️ Pens & Markers 🧪 Chemical Containers 🧂 Spice Jars 📦 Perfume Boxes 🔋 Battery Packs 🎨 Paint Tubes

Protection Type

Anti-collision, Anti-scratch, Anti-vibration

Assembly Method

Self-locking half-slot interlock — no glue needed

Board Standard

3-Ply 120 GSM Kraft (360 g/m² effective area weight)

Industry Usage

FMCG, Pharma, Glass, Cosmetics, Hardware, Export

⚙️ Calculation Settings

🌍 Weight Unit (select first) Kilogram (kg) Gram (g) Milligram (mg) Metric Ton / Tonne (t) Quintal (100 kg) Pound (lb) Ounce (oz) US Short Ton (2000 lb) UK Long Ton (2240 lb) US Hundredweight (cwt) Stone (st) Maund (Pakistan, 40 kg) Seer (Pakistan, 0.933 kg) Maund (Bangladesh, 37.32 kg) Seer (Bangladesh, 0.933 kg) Tola (11.66 g) Seer (India, 0.933 kg) Maund (India, 37.32 kg) Candy (326.59 kg) Jin / Catty (500 g, China) Tael / Liang (50 g, China) Picul (50 kg, China/SE Asia) Catty (Hong Kong, 604.79 g) Bag (50 kg — standard commodity bag) Bag (100 kg — wholesale grain bag) Grain (gr) Carat (ct) Arroba (Latin America, 14.69 kg) Pood (Russia/CIS, 16.38 kg)

Currency ₹ INR — Indian Rupee $ USD — US Dollar € EUR — Euro £ GBP — British Pound ¥ CNY — Chinese Yuan ৳ BDT — Bangladeshi Taka Rs PKR — Pakistani Rupee Rs LKR — Sri Lankan Rupee Rs NPR — Nepalese Rupee ؋ AFN — Afghan Afghani K MMK — Myanmar Kyat ฿ THB — Thai Baht ₫ VND — Vietnamese Dong Rp IDR — Indonesian Rupiah RM MYR — Malaysian Ringgit ₱ PHP — Philippine Peso S$ SGD — Singapore Dollar ₦ NGN — Nigerian Naira د.إ AED — UAE Dirham ﷼ SAR — Saudi Riyal E£ EGP — Egyptian Pound KSh KES — Kenyan Shilling ₵ GHS — Ghanaian Cedi R ZAR — South African Rand Br ETB — Ethiopian Birr TSh TZS — Tanzanian Shilling C$ CAD — Canadian Dollar MX$ MXN — Mexican Peso R$ BRL — Brazilian Real AR$ ARS — Argentine Peso ₽ RUB — Russian Ruble ₺ TRY — Turkish Lira CHF — Swiss Franc A$ AUD — Australian Dollar NZ$ NZD — New Zealand Dollar ¥ JPY — Japanese Yen ₩ KRW — South Korean Won HK$ HKD — Hong Kong Dollar Other (type manually)

Custom Currency Symbol

💰 Board Rate (price per kg)

Box Length (mm)

Box Width (mm)

Box Height (mm)

Product Shape Round / Cylindrical (Bottles, Jars) Rectangular (Boxes, Packets) Square Profiles

Product Length (mm)

Product Width (mm)

Product Diameter (mm)

Product Side Profile (mm)

Product Height (mm)

Thickness / Flute (mm)

Total Quantity (pcs)

Number of Layers

Clearance Margin (mm)

Board Type 3-Ply (Standard 120 GSM) Custom Parameters

Board Density (g/cm³)

Optimize layout orientations automatically

Show top product shape previews

📊 Calculated Output Summary

Recommended Master Inner Dimensions

— x — x — mm

Total Volume: — Liters

Box Capacity

—

Rows

—

Columns

—

Long Strips

—

Short Strips

—

Total Strips

—

Long Size

—

Short Size

—

Space Utility

—

Single Divider Strip Weight

— kg

Total Matrix Grid Net Weight: — kg

Single Divider Strip Cost

— ₹

Total Matrix Grid Cost: —

Slot Kerf Width:—

Strip Height Target:—

Trim Layout Pattern Waste:—

🎨 Live Die-Cut Layout Graphic

Target Box: Calculating...

Product Tint: Stamp Tag:

Matrix Processing...

Long Strips Profile: —

Short Strips Profile: —

Flat Linear Surface Area: —

📘 Technical Reference — Partition Design Principles

Corrugated multi-cell partitions are a critical industrial packaging component. Key engineering concepts are detailed below:

1. Structural Stiffness Factor

Interlocking dividers form solid support columns from the floor sheet up to the outer top flaps. This helps share the load during heavy warehouse pallet stacking and reduces the risk of side wall bulging.

2. Half-Slot Interlock Notches

Slots are precisely matched to the board's flute caliper thickness. This alignment ensures a smooth, self-locking fit on fast assembly lines without any glue or staples.

3. 3-Ply 120 GSM Weight Formula

In standard 3-Ply dividers, an inner fluted layer sits between two liner sheets. Net mass is calculated using 120 GSM Kraft elements on a 360 g/m² formula base — giving an accurate kg readout.

4. Multi-Layer Stacking Strategy

Dividing the target quantity into stacked multi-layer cells keeps the outer master shipper balanced and compact — saving freight space while still providing full protection.

2-Ply Corrugated Roll Calculator

Single-face corrugated roll — 1 Liner + 1 Flute medium.

L & W → Weight

Weight → Length

Area → Weight

Roll Dimensions

Roll Length (m)

Roll Width (mm)

Known Weight → Find Length

Roll Weight (kg)

Roll Width (mm)

Area → Weight

Sheet Length (mm)

Sheet Width (mm)

No. of Sheets

Paper Specifications

Liner GSM

Flute Medium GSM

Flute Type A Flute B Flute C Flute E Flute F Flute

Rate per kg Optional

Corrugated Plate / Sheet Weight Calculator New

Calculate weight of a corrugated sheet/plate by entering dimensions, ply, and GSM of each layer.

Sheet / Plate Dimensions

Length (mm)

Width (mm)

Ply Configuration & GSM

Select Ply Type Select Ply 2 Ply (Single Face) 3 Ply 5 Ply 7 Ply

Select ply type first

Quantity & Pricing Optional

Quantity (sheets)

Rate per kg

2-Ply Sheet Weight Calculator

Calculate weight of single-face corrugated sheet (1 Liner + 1 Flute).

Sheet Dimensions

Length (mm)

Width (mm)

Paper Specifications & Flute

Liner GSM

Flute Medium GSM

Flute Type A Flute B Flute C Flute E Flute F Flute

Quantity & Rate Optional

No. of Sheets

Rate per kg

About ProPac Packaging Calculator Suite

The ProPac Corrugated Box & Packaging Calculator Suite is a comprehensive, all-in-one web application designed specifically for professionals in the corrugated packaging, paper, and logistics industries. Built with a clean, responsive, and user-friendly interface, it allows manufacturers, estimators, and buyers to calculate precise physical specifications, weights, and costs for various packaging materials.

Core Modules & Features

• Box Calculator: Estimate exact paper requirement, weight, and pricing of a formed corrugated box with dynamic OD/ID dimensions, combined flute selections (e.g. B+C flute), and plate amortizations.
• Partition Calculator: Advanced die-cut layout optimizer and structural weight estimator for multi-cell interlocking divider strips inside master boxes.
• Roll Calculator: A versatile 3-way toggle to solve manufacturing variables (Dimensions to Weight, Weight to Length, Area to Weight) for single-face corrugated rolls.
• Plate / Sheet Weight: Calculate flat corrugated board specifications (2-ply to 7-ply) before slotting, including multi-flute combinations and a 3% glue weight factor.
• 2-Ply Sheet: A rapid calculator for flat, single-face (1 liner + 1 flute) cut sheets based on length, width, and GSM parameters.

Technical Highlights

Features built-in Global Currency & Unit Support, transparent Formula Boxes for mathematical reference, robust error handling, and an extensive resource library linking to over 30 specialized industry calculators. An invaluable daily utility for packaging professionals!

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