Standard box sizes
volume & DIM weight chart

155 common box sizes in inches, with cubic feet, liters and what each one bills at with FedEx, UPS and USPS. Tap a size for its full breakdown: size-limit checks, pallet fit, Amazon FBA tier and how much one inch less would save.

Rules verified 22 Sep 2026Every figure on this page is calculated from the box’s dimensions and the carriers’ own published rules: USPS DMM 223 (Priority Mail: DIM weight, cubic, nonstandard fees) · USPS DMM 133 (Ground Advantage — Retail) · USPS DMM 283 (Ground Advantage — Commercial, cubic) · USPS DMM 101 (maximum size and weight) · UPS 2026 Rate and Service Guide (Daily Rates) · UPS 2026 Rate and Service Guide (Retail Rates) · FedEx Service Guide 2026 · DHL Express US Service & Rate Guide 2026 · Amazon Seller Central — Product size tiers · USPS — Priority Mail (Flat Rate box sizes). Carriers change these rules, usually each January and July — confirm against your own rate sheet or account.

Find the right box →Enter your item; get the sizes that bill the lowest weight Boxes per pallet →Layers, pattern and load height on any pallet USPS cubic tier →Priority Mail & Ground Advantage Cubic FBA size tier →Amazon US tiers with DIM weight Box template generator →FEFCO 0201 dieline as SVG or PDF Moving box sizes →U-Haul’s five standard boxes, measured and compared Speaker box volume →Net volume after driver and port displacement DIM rule changes →Every divisor and threshold, dated and sourced

Find a size

Box (in)	in³	ft³	Liters	DIM ÷139 (lb)	UPS Retail ÷166	USPS (lb)	Flags
4 × 4 × 4	64	0.037	1.05	1	1	—	—
6 × 4 × 4	96	0.056	1.57	1	1	—	—
5 × 5 × 5	125	0.072	2.05	1	1	—	—
8 × 4 × 4	128	0.074	2.1	1	1	—	—
6 × 6 × 4	144	0.083	2.36	2	1	—	—
9 × 6 × 3	162	0.094	2.65	2	1	—	—
8 × 6 × 4	192	0.111	3.15	2	2	—	—
6 × 6 × 6	216	0.125	3.54	2	2	—	—
9 × 6 × 4	216	0.125	3.54	2	2	—	—
10 × 6 × 4	240	0.139	3.93	2	2	—	—
8 × 8 × 4	256	0.148	4.2	2	2	—	—
8 × 6 × 6	288	0.167	4.72	3	2	—	—
10 × 8 × 4	320	0.185	5.24	3	2	—	—
9 × 6 × 6	324	0.188	5.31	3	2	—	—
12 × 9 × 3	324	0.188	5.31	3	2	—	—
7 × 7 × 7	343	0.198	5.62	3	3	—	—
11 × 8 × 4	352	0.204	5.77	3	3	—	—
10 × 6 × 6	360	0.208	5.9	3	3	—	—
8 × 8 × 6	384	0.222	6.29	3	3	—	—
12 × 8 × 4	384	0.222	6.29	3	3	—	—
10 × 10 × 4	400	0.231	6.55	3	3	—	—
12 × 6 × 6	432	0.25	7.08	4	3	—	—
12 × 9 × 4	432	0.25	7.08	4	3	—	—
10 × 8 × 6	480	0.278	7.87	4	3	—	—
12 × 10 × 4	480	0.278	7.87	4	3	—	—
9 × 9 × 6	486	0.281	7.96	4	3	—	—
8 × 8 × 8	512	0.296	8.39	4	4	—	—
13 × 10 × 4	520	0.301	8.52	4	4	—	—
11 × 8 × 6	528	0.306	8.65	4	4	—	—
14 × 10 × 4	560	0.324	9.18	5	4	—	—
12 × 8 × 6	576	0.333	9.44	5	4	—	—
12 × 12 × 4	576	0.333	9.44	5	4	—	—
10 × 10 × 6	600	0.347	9.83	5	4	—	—
15 × 10 × 4	600	0.347	9.83	5	4	—	—
10 × 8 × 8	640	0.37	10.5	5	4	—	—
16 × 10 × 4	640	0.37	10.5	5	4	—	—
12 × 9 × 6	648	0.375	10.6	5	4	—	—
18 × 6 × 6	648	0.375	10.6	5	4	—	—
14 × 8 × 6	672	0.389	11	5	5	—	—
12 × 10 × 6	720	0.417	11.8	6	5	—	—
9 × 9 × 9	729	0.422	11.9	6	5	—	—
12 × 8 × 8	768	0.444	12.6	6	5	—	—
16 × 12 × 4	768	0.444	12.6	6	5	—	—
10 × 10 × 8	800	0.463	13.1	6	5	—	—
14 × 10 × 6	840	0.486	13.8	7	6	—	—
12 × 12 × 6	864	0.5	14.2	7	6	—	—
24 × 6 × 6	864	0.5	14.2	7	6	—	USPS fee
12 × 10 × 8	960	0.556	15.7	7	6	—	—
16 × 10 × 6	960	0.556	15.7	7	6	—	—
12 × 9 × 9	972	0.562	15.9	7	6	—	—
10 × 10 × 10	1,000	0.579	16.4	8	7	—	—
14 × 12 × 6	1,008	0.583	16.5	8	7	—	—
16 × 8 × 8	1,024	0.593	16.8	8	7	—	—
15 × 12 × 6	1,080	0.625	17.7	8	7	—	—
18 × 10 × 6	1,080	0.625	17.7	8	7	—	—
30 × 6 × 6	1,080	0.625	17.7	8	7	—	USPS fee
14 × 10 × 8	1,120	0.648	18.4	9	7	—	—
12 × 12 × 8	1,152	0.667	18.9	9	7	—	—
16 × 12 × 6	1,152	0.667	18.9	9	7	—	—
14 × 14 × 6	1,176	0.681	19.3	9	8	—	—
12 × 10 × 10	1,200	0.694	19.7	9	8	—	—
12 × 12 × 9	1,296	0.75	21.2	10	8	—	—
18 × 12 × 6	1,296	0.75	21.2	10	8	—	—
36 × 6 × 6	1,296	0.75	21.2	10	8	—	USPS fee
11 × 11 × 11	1,331	0.77	21.8	10	9	—	—
14 × 12 × 8	1,344	0.778	22	10	9	—	—
14 × 10 × 10	1,400	0.81	22.9	11	9	—	—
12 × 12 × 10	1,440	0.833	23.6	11	9	—	—
15 × 12 × 8	1,440	0.833	23.6	11	9	—	—
16 × 12 × 8	1,536	0.889	25.2	12	10	—	—
16 × 16 × 6	1,536	0.889	25.2	12	10	—	—
14 × 14 × 8	1,568	0.907	25.7	12	10	—	—
16 × 10 × 10	1,600	0.926	26.2	12	10	—	—
14 × 12 × 10	1,680	0.972	27.5	13	11	—	—
12 × 12 × 12	1,728	1	28.3	13	11	—	—
18 × 12 × 8	1,728	1	28.3	13	11	—	—
24 × 12 × 6	1,728	1	28.3	13	11	—	USPS fee
48 × 6 × 6	1,728	1	28.3	13	11	—	USPS fee
15 × 12 × 10	1,800	1.042	29.5	13	11	13	—
16 × 12 × 10	1,920	1.111	31.5	14	12	14	—
20 × 12 × 8	1,920	1.111	31.5	14	12	14	—
18 × 18 × 6	1,944	1.125	31.9	14	12	14	—
14 × 14 × 10	1,960	1.134	32.1	15	12	15	—
20 × 10 × 10	2,000	1.157	32.8	15	13	15	—
18 × 14 × 8	2,016	1.167	33	15	13	15	—
16 × 16 × 8	2,048	1.185	33.6	15	13	15	—
18 × 12 × 10	2,160	1.25	35.4	16	14	16	—
13 × 13 × 13	2,197	1.271	36	16	14	16	—
16 × 14 × 10	2,240	1.296	36.7	17	14	17	—
16 × 12 × 12	2,304	1.333	37.8	17	14	17	—
18 × 16 × 8	2,304	1.333	37.8	17	14	17	—
24 × 12 × 8	2,304	1.333	37.8	17	14	17	USPS fee
20 × 12 × 10	2,400	1.389	39.3	18	15	18	—
24 × 10 × 10	2,400	1.389	39.3	18	15	18	USPS fee
18 × 14 × 10	2,520	1.458	41.3	19	16	19	—
16 × 16 × 10	2,560	1.481	42	19	16	19	—
18 × 12 × 12	2,592	1.5	42.5	19	16	19	—
18 × 18 × 8	2,592	1.5	42.5	19	16	19	—
24 × 14 × 8	2,688	1.556	44	20	17	20	USPS fee
14 × 14 × 14	2,744	1.588	45	20	17	20	—
20 × 14 × 10	2,800	1.62	45.9	21	17	21	—
18 × 16 × 10	2,880	1.667	47.2	21	18	21	—
20 × 12 × 12	2,880	1.667	47.2	21	18	21	—
24 × 12 × 10	2,880	1.667	47.2	21	18	21	USPS fee
18 × 14 × 12	3,024	1.75	49.6	22	19	22	—
16 × 16 × 12	3,072	1.778	50.3	23	19	23	—
22 × 14 × 10	3,080	1.782	50.5	23	19	23	—
20 × 16 × 10	3,200	1.852	52.4	24	20	24	—
18 × 18 × 10	3,240	1.875	53.1	24	20	24	—
20 × 14 × 12	3,360	1.944	55.1	25	21	25	—
15 × 15 × 15	3,375	1.953	55.3	25	21	25	—
18 × 16 × 12	3,456	2	56.6	25	21	25	—
24 × 12 × 12	3,456	2	56.6	25	21	25	USPS fee
16 × 16 × 14	3,584	2.074	58.7	26	22	26	USPS fee
20 × 16 × 12	3,840	2.222	62.9	28	24	28	USPS fee
24 × 16 × 10	3,840	2.222	62.9	28	24	28	USPS fee
18 × 18 × 12	3,888	2.25	63.7	28	24	28	USPS fee
20 × 20 × 10	4,000	2.315	65.5	29	25	29	USPS fee
24 × 14 × 12	4,032	2.333	66.1	30	25	30	USPS fee
16 × 16 × 16	4,096	2.37	67.1	30	25	30	USPS fee
22 × 16 × 12	4,224	2.444	69.2	31	26	31	USPS fee
30 × 12 × 12	4,320	2.5	70.8	32	27	32	USPS fee
24 × 16 × 12	4,608	2.667	75.5	34	28	34	USPS fee
22 × 18 × 12	4,752	2.75	77.9	35	29	35	USPS fee
20 × 20 × 12	4,800	2.778	78.7	35	29	35	USPS fee
24 × 20 × 10	4,800	2.778	78.7	35	29	35	USPS fee
17 × 17 × 17	4,913	2.843	80.5	36	30	36	USPS fee
20 × 16 × 16	5,120	2.963	83.9	37	31	37	USPS fee
18 × 18 × 16	5,184	3	85	38	32	38	USPS fee
24 × 18 × 12	5,184	3	85	38	32	38	USPS fee
36 × 12 × 12	5,184	3	85	38	32	38	USPS fee
20 × 20 × 14	5,600	3.241	91.8	41	34	41	USPS fee
24 × 20 × 12	5,760	3.333	94.4	42	35	42	USPS fee
18 × 18 × 18	5,832	3.375	95.6	42	36	42	USPS fee
24 × 16 × 16	6,144	3.556	100.7	45	38	45	USPS fee
20 × 20 × 16	6,400	3.704	104.9	47	39	47	USPS fee
24 × 24 × 12	6,912	4	113.3	50	42	50	USPS fee
48 × 12 × 12	6,912	4	113.3	50	42	50	USPS fee
24 × 20 × 16	7,680	4.444	125.9	56	47	56	USPS fee
18 × 18 × 24	7,776	4.5	127.4	56	47	56	USPS fee
24 × 18 × 18	7,776	4.5	127.4	56	47	56	USPS fee
20 × 20 × 20	8,000	4.63	131.1	58	49	58	USPS fee
28 × 20 × 16	8,960	5.185	146.8	65	54	65	USPS fee
24 × 24 × 16	9,216	5.333	151	67	56	67	USPS fee
24 × 20 × 20	9,600	5.556	157.3	70	58	70	USPS fee
24 × 24 × 18	10,368	6	169.9	75	63	70	Add’l Handling USPS fee
22 × 22 × 22	10,648	6.162	174.5	77	65	70	Add’l Handling USPS fee
24 × 24 × 20	11,520	6.667	188.8	83	70	70	Add’l Handling USPS fee
30 × 20 × 20	12,000	6.944	196.6	87	73	70	Add’l Handling USPS fee
24 × 24 × 24	13,824	8	226.5	100	84	70	Add’l Handling USPS fee
26 × 26 × 26	17,576	10.17	288	127	106	70	Large Pkg USPS fee
36 × 24 × 24	20,736	12	339.8	150	125	70	Large Pkg USPS fee
28 × 28 × 28	21,952	12.7	359.7	158	133	70	Large Pkg USPS fee
30 × 30 × 30	27,000	15.62	442.5	195	163	70	Large Pkg USPS fee
36 × 36 × 36	46,656	27	764.6	336	282	70	Over max USPS fee

DIM weights rounded up to the next lb. “÷139” is FedEx, UPS Daily Rates and DHL Express from the US. USPS applies dimensional weight only over 1 ft³. Flags are for size only: “Add’l Handling” = UPS/FedEx Additional Handling (40 lb minimum), “Large Pkg” = UPS Large Package / FedEx Oversize (90 lb minimum), “USPS fee” = USPS nonstandard length or 2 ft³ fee. Not sure how length + girth is measured? See girth in shipping.

Rules verified 22 Sep 2026 · sources: FedEx Service Guide 2026 · UPS 2026 Rate and Service Guide (Daily Rates) · UPS 2026 Rate and Service Guide (Retail Rates) · USPS DMM 223 (Priority Mail: DIM weight, cubic, nonstandard fees) · USPS DMM 101 (maximum size and weight) · DHL Express US Service & Rate Guide 2026

USPS

USPS Priority Mail Flat Rate boxes

Inside dimensions as published by USPS. Flat Rate is priced per box, up to 70 lb, with no dimensional weight — so what matters is whether your item fits. Each box page above says which Flat Rate box, if any, an item of that size fits in.

Box	Inside (L × W × H)	in³	ft³	Liters
USPS Small Flat Rate Box	8 5/8 × 5 3/8 × 1 5/8 in	75.3	0.044	1.23
USPS Medium Flat Rate Box 1	11 × 8 1/2 × 5 1/2 in	514.2	0.298	8.43
USPS Medium Flat Rate Box 2	13 5/8 × 11 7/8 × 3 3/8 in	546.1	0.316	8.95
USPS Large Flat Rate Box	12 × 11 3/4 × 5 1/2 in	775.5	0.449	12.71

Rules verified 22 Sep 2026 · sources: USPS — Priority Mail (Flat Rate box sizes)

FAQ

Box size questions

What are the most common shipping box sizes?

There’s no single official list. In US e-commerce the everyday sizes run from small cubes like 6 × 6 × 6 in to 12 × 12 × 12 in (1 cubic foot), mid-size cartons such as 16 × 12 × 8, 18 × 12 × 10 and 20 × 14 × 10 in, and moving-style boxes such as 18 × 18 × 16 and 18 × 18 × 24 in — the moving box sizes page lists what the rental brands actually sell. Every size in the chart has its own page with volume, dimensional weight and size-limit checks.

How do I find the cubic feet of a box?

Multiply length × width × height in inches and divide by 1,728. A 16 × 12 × 12 in box is 2,304 in³ ÷ 1,728 = 1.333 cubic feet.

Which box sizes trigger UPS or FedEx Additional Handling?

Any box with a side over 48 in, a second-longest side over 30 in, length + girth over 105 in, or more than 10,368 in³ (for example 24 × 24 × 20 in is 11,520 in³). Those carry a 40 lb minimum billable weight. The chart flags them.

When does USPS charge dimensional weight?

Only when the parcel is over 1 cubic foot (1,728 in³). A 12 × 12 × 12 in box is exactly 1,728 in³, so USPS prices it on actual weight; 12 × 12 × 13 in would be over the line. Above that, USPS divides by 139, rounds up, and caps at the 70 lb price.

Size not listed? Use the calculator or the DIM weight calculator.

Standard box sizesvolume & DIM weight chart

USPS Priority Mail Flat Rate boxes

Box size questions

Standard box sizes
volume & DIM weight chart