Free Packaging Tools: Box Sizing, Mylar, QR and Barcodes
Size the box, compare materials, plan the bag and generate your labels. Every tool runs in your browser with no login or email.
Which tool answers your question?
Box Size and Dimensional Weight Calculator →
Box Volume and Cubic Feet Calculator →
Pallet Load Calculator →
Product-to-Box Fit Calculator →
Standard Box Sizes Chart →
Dimension Unit Converter →
Paper Weight Calculator →
Packaging Material Selector →
Mylar Bag Size Planner →
Bag Volume and Headspace Calculator →
Barcode Generator →
QR Code Generator →
Label Sheet Layout Calculator →
KEY TAKEAWAY
Free planning tools help turn your product dimensions, materials and quantities into a clearer packaging brief. Confirm production tolerances and carrier rules before approving your final specification.
Every tool, by the question it answers
Size and ship
Box Size and Dimensional Weight Calculator
Compare box volume and courier dimensional weight.
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Box Volume and Cubic Feet Calculator
Convert internal dimensions into litres and cubic feet.
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Pallet Load Calculator
Estimate boxes per layer and layers within your height limit.
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Product-to-Box Fit Calculator
Add clearance to your product dimensions.
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Standard Box Sizes Chart
Compare common starting dimensions for your project.
View starting sizes →
| Use | L × W × H (cm) |
|---|---|
| Small product | 15 × 10 × 5 |
| Gift mailer | 25 × 20 × 10 |
| Apparel mailer | 35 × 25 × 8 |
| Large collection | 40 × 30 × 15 |
Starting examples only. Measure your contents and allow for inserts and board thickness.
Dimension Unit Converter
Convert millimetres, centimetres and inches.
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Materials and weight
Paper Weight Calculator
Calculate sheet weight using area and GSM.
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Packaging Material Selector
Compare structures for shipping, presentation and flexible packs.
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Mylar bags
Mylar Bag Size Planner
Estimate lay-flat width and usable bag height around your contents.
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Bag Volume and Headspace Calculator
Compare package volume and occupied contents volume.
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Labels and codes
Barcode Generator
Generate and download CODE128, EAN13 or UPC barcodes.
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QR Code Generator
Create a downloadable QR code for a URL or text.
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Label Sheet Layout Calculator
Estimate labels per sheet with margins and gaps.
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Thirteen free tools, no login and no email
Use the calculators in your browser. Your inputs stay on this page until you choose to include a specification in a quote request. Start with product measurements, then compare structure, volume, weight and labels.
Sizing and weight
Measure length, width and height with your preferred units. Courier dimensional weight uses external package dimensions and the divisor specified by your carrier. Internal capacity and outside shipping dimensions are different measurements.
Mylar bag tools
A flexible bag needs room for the product depth, seal and opening. Use these calculations as a starting point, then confirm the actual bag structure with a physical fit sample. Headspace is a volume calculation, not a food preservation recommendation.
Codes and labelling
Generate QR codes and supported barcodes locally. Check the encoded content and test a printed sample with your intended scanner. Retail identifiers must be assigned to your own products; the generator does not register a GTIN.
When a calculator is not enough
Board thickness, inserts, tolerances, print coverage and finishing can affect the final structure. Send your calculated dimensions with the quantity and artwork requirements so we can review a production specification.
If you plan with an AI assistant
Use the calculated specification as a starting point for your brief. Confirm the measurements yourself and share the final requirements through our quotation form.
Quote this spec
Tell us what you are packaging and include your calculated dimensions.
Link to this tool
Share the free packaging tools with your team.
Questions buyers ask
Are these packaging tools free?
Yes. All calculations run in your browser without a login or email.
Will a calculator replace a physical fit test?
No. Confirm the finished structure, board thickness and tolerances with a sample or approved dieline.
Can I include the result in my quote?
Yes. Use the Copy specification button and paste the result into Project Details.
Do QR codes or barcodes need checking?
Test the downloaded code and a printed sample with your scanner before production.