Void Fill Cost Calculator

About the Void Fill Cost Calculator

The Void Fill Cost Calculator estimates the material and labor cost of filling empty space in shipping boxes. Void fill protects products during transit but adds cost to every order — typically $0.08–0.50 per order in materials plus 10–40 seconds of packing labor.

Different void fill materials have different cost profiles: air pillows are cheapest at $0.02–0.05 per cubic foot, kraft paper costs $0.05–0.10, packing peanuts cost $0.08–0.15, and custom foam inserts cost $0.15–$1.00+. The optimal choice depends on your void space volume, product fragility, and order volume.

This calculator helps you compare fill types and understand the total cost per order including both materials and the labor time to apply them. By right-sizing your boxes, you can reduce void space and lower these costs significantly.

When This Page Helps

Void fill costs add up fast at scale. This calculator reveals the true per-order cost of filling wasted box space, motivating box optimization and helping you choose the most cost-effective fill material.

How to Use the Inputs

1. Enter the void space in cubic inches (from packing efficiency calculator).
2. Select the void fill material type.
3. Enter the labor rate and estimated seconds to pack.
4. Enter your monthly order volume.
5. View per-order and monthly costs.
6. Compare different fill materials to find the most cost-effective option.

Example Calculation

Tips & Best Practices

• Air pillows are the most cost-effective for large void spaces.
• Kraft paper provides better cushioning than air pillows for heavy items.
• Packing peanuts are being phased out due to environmental concerns and mess.
• Custom foam inserts reduce labor time and improve unboxing experience for premium products.
• Reducing box size by 2 inches in each dimension typically eliminates 30–50% of void fill needs.
• Automated void fill machines can reduce labor from 30 seconds to 5 seconds per order at high volumes.

Void Fill Material Comparison

Air pillows: Cheapest material ($0.02–0.05/cu ft), lightweight, requires machine. Best for large voids. Kraft paper: Versatile ($0.05–0.10/cu ft), no machine needed, good cushioning. Best for heavy items. Packing peanuts: Moderate cost ($0.08–0.15/cu ft), messy, being phased out. Foam inserts: Premium ($0.15–1.00+/cu ft), best protection, highest unboxing quality.

Labor Cost Is Often Higher Than Material Cost

At $18/hour, every additional 10 seconds of packing time costs $0.05 per order. If you pack 2,000 orders per month and spend 30 seconds on void fill versus 10 seconds, the extra 20 seconds costs $200/month in labor alone. Automation and simpler fill methods (pre-cut paper packs, air pillow machines) can cut this significantly.

Hidden Costs of Void Fill

Beyond material and labor, void fill has hidden costs: storage space for fill materials, equipment maintenance, and environmental disposal fees. Air pillow film rolls are compact but the machine needs periodic maintenance. Packing peanuts require significant storage space. Factor these overhead costs into your true per-order calculation.

Frequently Asked Questions

• Which void fill material is cheapest?

  Air pillows are the cheapest per cubic foot ($0.02–0.05). They require a machine ($500–$3,000) but the film rolls are inexpensive. Kraft paper is similarly affordable and doesn't require a machine. Packing peanuts and foam inserts are the most expensive options.

• How much void fill do I need per order?

  The amount depends on box size versus product size. A well-fitted box needs minimal fill (just cushioning around the product). An oversized box can need 500–1,000+ cubic inches of fill. Use the packing efficiency calculator to measure your void space.

• Are there eco-friendly void fill options?

  Yes, recyclable kraft paper, corn starch packing peanuts, recycled cardboard shred, and paper honeycomb are all eco-friendly options. Many consumers prefer sustainable packaging, so eco-friendly fill can improve brand perception while also being cost-competitive.

• Should I use an automated void fill machine?

  Automated air pillow or paper dispensing machines make sense above 100–200 orders per day. They reduce packing time from 20–40 seconds to 5–10 seconds per order and produce consistent fill volumes. ROI is typically 3–6 months at volume.

• How do I reduce void fill costs?

  The most effective approach is right-sizing boxes to reduce void space. Beyond that, switch to lower-cost fill materials, automate fill dispensing, and consider poly mailers for products that don't need box protection. Each strategy can save 20–50% on fill costs.

• Does void fill affect shipping cost?

  Void fill materials add minimal weight (especially air pillows), so they rarely affect actual weight charges. However, the need for void fill usually indicates an oversized box, which increases dimensional weight charges — a much larger cost impact than the fill material itself.