14 × 14 × 8 in box: dimensions, dim weight and strength
A 14 × 14 × 8 in box holds 1,568 in³ (0.91 ft³) inside. Made in C flute its outside is about 14.31 × 14.31 × 8.47 in, which dimensional weight bills USPS at 15 lb and FedEx at 12 lb.
Key numbers
| Inside (L × W × H) | 14 × 14 × 8 in |
|---|---|
| Inside volume | 1,568 in³ · 0.907 ft³ · 25.7 L |
| Inside, metric | 356 × 356 × 203 mm |
| Perimeter 2(L + W) | 56 in |
| Length + girth, C flute OD | 59.9 in |
Outside dimensions by flute
| Board | Caliper, in | Outside, in | Outside volume, ft³ |
|---|---|---|---|
| E flute | 0.063 | 14.13 × 14.13 × 8.19 | 0.945 |
| B flute | 0.125 | 14.25 × 14.25 × 8.38 | 0.984 |
| C flute | 0.156 | 14.31 × 14.31 × 8.47 | 1.004 |
| EB double wall | 0.188 | 14.38 × 14.38 × 8.56 | 1.024 |
| BC double wall | 0.281 | 14.56 × 14.56 × 8.84 | 1.085 |
OD ≈ ID + 2 calipers on length and width, + 3 on depth. An estimate: your box maker sets the scores. Convert other sizes.
Dimensional weight
| Carrier | Divisor | Measured, in (C) | DW, C flute | DW, BC double wall |
|---|---|---|---|---|
| USPS | 139 | 15 × 15 × 9 | 15 lb | 15 lb |
| FedEx | 139 | 14 × 14 × 8 | 12 lb | 15 lb |
DW = ⌈L × W × H ÷ divisor⌉ on outside dimensions, after each carrier's own rounding. USPS applies it only above 1,728 in³ (n/a means it bills actual weight). The carrier bills the greater of actual and dimensional weight. Divisors checked on carrier pages 2026-10-27; try your own weight.
Estimated compression strength
| Board | BCT, lbf | After 30 days storage |
|---|---|---|
| 32 ECT B flute | 497 | 298 |
| 32 ECT C flute | 556 | 333 |
| 44 ECT C flute | 764 | 458 |
| 48 ECT C flute | 833 | 500 |
| 48 ECT BC double wall | 1,118 | 671 |
| 61 ECT BC double wall | 1,421 | 853 |
| 71 ECT BC double wall | 1,654 | 992 |
Simplified McKee: BCT ≈ 5.87 × ECT × √(caliper × 56). The 30-day column applies Packgent's default 40% storage loss, an assumption. Estimates only; test with ASTM D642.
Pallet pattern on 48 × 40
| Board | Per layer | Layers | Boxes per pallet | Load height, in | Cube used |
|---|---|---|---|---|---|
| C flute | 6 | 6 | 36 | 56.3 | 60% |
| BC double wall | 6 | 6 | 36 | 58.6 | 65% |
Column stacked, no overhang, on a 48 × 40 in deck 5.5 in tall, loaded to 60 in overall. Those three are assumptions you can change in the pallet calculator. Pattern: 14.3125″ along the 48″ side.
Blank size in C flute
| Style | Blank, in | Board, ft² |
|---|---|---|
| 0201 RSC | 57.88 × 22.31 | 8.97 |
| 0200 HSC | 57.88 × 15.16 | 6.09 |
| 0203 FOL | 57.88 × 36.31 | 14.59 |
With one caliper allowance per score. Multiply board area by your board's combined weight (lb/MSF ÷ 1,000) for box weight, or use the box weight calculator.
Sources
- USPS Domestic Mail Manual 223 (Priority Mail prices and eligibility), section 1.4
- FedEx: What is dimensional weight?
- Flute calipers: Foster (1997), Wiley Encyclopedia of Packaging Technology
- McKee, Gander & Wachuta (1963), Paperboard Packaging 48(8)
Last reviewed . See all sources and how Packgent computes.
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