Sq ft to Cubic feet Conversion Calculator – Convert Square Feet to Cubic Ft

The square feet to cubic feet calculator takes into account the height dimension along with the area measurement to compute the volume in cubic feet.

For instance, if you have a room with a floor area of 100 square feet and a ceiling height of 8 feet, the calculator would multiply these values to give you the total volume of 800 cubic feet.

Let’s say you’re planning to install an HVAC system in a room:

• Floor area = 150 sq ft
• Room height = 9 ft

You input these values to instantly get: Volume = 150 × 9 = 1,350 cubic feet

Sq ft to Cubic feet Calculator

sq ft Converted to	Cubic Feet (cu ft)
1	8
2	16
3	24
4	32
5	40
6	48
7	56
8	64
9	72
10	80
11	88
12	96
13	104
14	112
15	120
16	128
17	136
18	144
19	152
20	160
21	168
22	176
23	184
24	192
25	200
26	208
27	216
28	224
29	232
30	240
31	248
32	256
33	264
34	272
35	280
36	288
37	296
38	304
39	312
40	320
41	328
42	336
43	344
44	352
45	360
46	368
47	376
48	384
49	392
50	400
51	408
52	416
53	424
54	432
55	440
56	448
57	456
58	464
59	472
60	480
61	488
62	496
63	504
64	512
65	520
66	528
67	536
68	544
69	552
70	560
71	568
72	576
73	584
74	592
75	600
76	608
77	616
78	624
79	632
80	640
81	648
82	656
83	664
84	672
85	680
86	688
87	696
88	704
89	712
90	720
91	728
92	736
93	744
94	752
95	760
96	768
97	776
98	784
99	792
100	800
200	1600
300	2400
400	3200
500	4000
600	4800
700	5600
800	6400
900	7200
1000	8000
2000	16000
3000	24000
4000	32000
5000	40000
6000	48000
7000	56000
8000	64000
9000	72000
10000	80000

Sq Ft to Cubic Feet Conversion Formula

The formula multiplies the area in square feet by the height in feet:

Cubic Feet = Square Feet × Height

This formula is based on the mathematical principle that volume equals length times width times height. Since square feet already represents length times width, we only need to multiply by height to get the cubic measurement.

Consider a swimming pool design:

• Pool area = 200 sq ft
• Depth = 6 ft

Volume = 200 × 6 = 1,200 cubic feet of water capacity

How to Convert Square Feet to Cubic Feet?

Converting square feet to cubic feet involves a three-step process:

• Measure the area in square feet
• Measure the height or depth in feet
• Multiply these two measurements

For a concrete slab foundation:

• Area = 400 sq ft
• Thickness = 0.5 ft

Volume of concrete needed = 400 × 0.5 = 200 cubic feet

How many cubic feet in a square foot?

To find cubic feet from square feet, use this basic formula:

Cubic Feet = Square Feet × Height (in feet)

If you have 1 square foot of space:

• At 1 foot height = 1 cubic foot
• At 2 feet height = 2 cubic feet
• At 3 feet height = 3 cubic feet

Consider a storage unit with a 10×10 foot floor (100 square feet):

• With an 8-foot ceiling = 800 cubic feet
• With a 10-foot ceiling = 1,000 cubic feet
• With a 12-foot ceiling = 1,200 cubic feet

How Many Cubic Feet are in 100 Sq Ft?

The cubic feet in 100 square feet depends entirely on the height dimension. Here’s how it changes with different heights:

• At 1 foot height: 100 cubic feet
• At 8 feet height: 800 cubic feet
• At 10 feet height: 1,000 cubic feet

For a standard room:

• Floor area = 100 sq ft
• Ceiling height = 8 ft

Room volume = 100 × 8 = 800 cubic feet

References:

• National Institute of Standards and Technology (NIST): https://www.nist.gov/pml/weights-and-measures
• American Society of Civil Engineers (ASCE): https://www.asce.org/publications-and-news/
• National Council of Examiners for Engineering and Surveying: https://ncees.org/engineering/

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