All calculators
54 free tools for sizing boxes, planning packing materials, checking box strength and working out shipping and freight. Everything runs in your browser.
- Box sizing and design
- Packing materials
- Box strength and weight
- Shipping and freight
- Unit converters
- Cost and planning
Box sizing and design
- Box size calculator
Inside and outside box size, dimensional weight, blank size and closest stock box from your product size.
- Standard box sizes chart
Common stock box sizes with a filter that shows which ones fit your product.
- Box dimensions converter
Convert a box size between inches, centimeters, millimeters and feet in one step, including fractional inches.
- Inside to outside dimensions calculator
Turn a box's inside dimensions into its outside size, based on the board it's made from.
- Outside to inside dimensions calculator
Measured the outside of a box? Find the usable space inside it.
- Box surface area calculator
Find a box's outer surface area and how much corrugated board it takes to make.
- RSC blank size calculator
Get the flat sheet size, panels and flap depth for a regular slotted corrugated box.
- Tuck end box blank size calculator
Estimate the flat blank of a reverse tuck end carton and how many fit on a press sheet.
- Mailer box size calculator
Size a roll-end tuck front mailer box around your product.
- Folding carton size calculator
Size a paperboard retail carton around your product, ready to send to a printer.
- Rigid box size calculator
Work out base tray and lid sizes for a two-piece rigid setup box.
- Multi-item box calculator
Find the smallest box that holds a number of identical items, and how to arrange them.
- Box-in-box calculator
Size the outer carton when you double box a fragile item.
- Mailing tube size calculator
Find the right mailing tube for rolled posters, prints and plans.
- Bottle shipping box calculator
Size a partitioned shipping box for bottles, jars and cans.
- Box divider calculator
Work out cell sizes and partition pieces for corrugated box dividers.
- Foam insert calculator
Check how much foam surrounds a product in a box, and plan a two-piece cutout insert.
- Poly mailer size calculator
Find the poly mailer size for clothing and other soft, flat items.
- Wooden crate size calculator
Estimate inside and outside dimensions for a wooden shipping crate.
- Dieline bleed and safe area calculator
Set up packaging artwork with the right bleed and safe area.
Packing materials
- Void fill calculator
Work out how much empty space needs filling in a box.
- Bubble wrap calculator
Estimate bubble wrap per item and how many items a roll covers.
- Packing tape calculator
Work out tape per box and how many rolls a batch of boxes needs.
- Stretch wrap calculator
Estimate how much stretch film each pallet uses and how many pallets a roll wraps.
- Empty box weight calculator
Estimate how much an empty corrugated box weighs.
- Corrugated board cost calculator
Convert a box order into MSF of board and estimate board cost per box.
- Blanks per sheet calculator
See how many blanks fit on a sheet and how much material is wasted.
- GSM to lb paper weight calculator
Convert paper weight between GSM and US text, cover, bond and index pounds.
- Paperboard caliper converter
Convert paperboard thickness between points, millimeters and microns.
Box strength and weight
- Box compression strength calculator
Estimate how much top load a corrugated box can take, using the McKee formula.
- Box stacking calculator
Find how many boxes can safely stack on top of one another.
- Packed box weight calculator
Add up everything in the box and see what you'll be billed for.
Shipping and freight
- DIM weight calculator
Dimensional and billable weight for UPS, FedEx, USPS and metric divisors.
- Length plus girth calculator
Calculate length plus girth and check a package against common carrier size limits.
- USPS cubic tier calculator
Find your package's USPS cubic pricing tier.
- Air freight chargeable weight calculator
Work out volumetric and chargeable weight for an air or express shipment.
- CBM calculator
Calculate cubic meters (CBM) for a shipment and how much of a container it fills.
- Shipment cubic feet calculator
Total cubic feet, weight and density for a shipment of identical boxes.
- Freight class calculator
Estimate LTL freight class from your shipment's density.
- Boxes per pallet calculator
Work out how many boxes fit on a pallet, per layer and in total.
- Pallet weight calculator
Add up the total weight of a loaded pallet.
- Container loading calculator
Estimate how many cartons fit in a shipping container.
- Pallets per truck calculator
Find how many pallets fit in a trailer or container.
Unit converters
- Box volume calculator
Volume in any unit, plus how many items fit inside a box.
- Shipping weight converter
Convert package weight between pounds, ounces, kilograms and grams.
- Fraction to decimal inches calculator
Convert tape-measure fractions to decimals and millimeters, and back.
- Cubic unit converter
Convert volume between cubic feet, inches, liters, cubic meters and more.
Cost and planning
- Box cost per unit calculator
Work out the true landed cost per box, including setup and freight.
- Packaging cost per order calculator
Find your true packaging cost per order, materials and labor included.
- Right-sizing savings calculator
Estimate what a better-fitting box could save on shipping each year.
- Box reorder point calculator
Work out when to reorder boxes and how many to order.
- Moving boxes calculator
Estimate how many moving boxes, by size, you'll need for your move.
- Gusset bag volume calculator
Estimate how much a side gusset bag holds.
- Envelope size calculator
Find the smallest standard envelope that fits your document or flat item.