A standard 5-gallon bucket holds approximately 0.668 cubic feet of volume when using U.S. liquid gallons.

For most practical calculations, you can round this to:

1 five-gallon bucket ≈ 0.67 cubic feet

This conversion is useful when estimating how many buckets of soil, sand, gravel, concrete, water, mulch, or other materials are needed for a project.

The calculation comes from the relationship between U.S. gallons and cubic feet. One U.S. gallon is approximately 0.1337 cubic feet, so five gallons is approximately 0.668 cubic feet.

It’s important to remember that a bucket’s physical dimensions and its actual usable capacity can vary slightly by manufacturer. A bucket marketed as 5 gallons may not hold exactly 5 gallons when filled to the very top.

---

Quick Answer: How Many Cubic Feet Are in a 5-Gallon Bucket?

A 5-gallon bucket holds approximately 0.67 cubic feet.

More precisely:

5 U.S. gallons ≈ 0.668 cubic feet

So you can use the following rule of thumb:

5-gallon bucket = about ⅔ of a cubic foot

V=lwh

$V = \text{4} \times \text{3} \times \text{2} = \text{24}$V=4×3×2=24

$l$l

$l$l

$w$w

$w$w

$h$h

$h$hl = 4h = 2w = 3

Give feedback

This is a volume conversion, so it doesn’t matter whether the bucket contains water, soil, sand, or another material. The volume remains approximately 0.668 cubic feet; only the weight changes.

---

How Do You Convert 5 Gallons to Cubic Feet?

The easiest way is to use the standard U.S. volume conversion.

One U.S. gallon equals approximately:

0.133681 cubic feet

Therefore:

5 × 0.133681 ≈ 0.6684 cubic feet

So:

5 gallons ≈ 0.668 cubic feet

For everyday estimating, 0.67 cubic feet is usually sufficient.

---

How Many Cubic Inches Are in a 5-Gallon Bucket?

Another useful conversion is cubic inches.

One U.S. gallon contains:

231 cubic inches

Therefore:

5 × 231 = 1,155 cubic inches

So a 5-gallon volume is:

1,155 cubic inches

Since one cubic foot contains 1,728 cubic inches:

1,155 ÷ 1,728 ≈ 0.668 cubic feet

This produces the same result.

---

How Many 5-Gallon Buckets Are in 1 Cubic Foot?

If one 5-gallon bucket contains approximately 0.668 cubic feet, divide one cubic foot by 0.668.

1 ÷ 0.668 ≈ 1.5

Therefore:

About 1.5 five-gallon buckets equal 1 cubic foot.

In practical terms, you need approximately 1½ full 5-gallon buckets to make one cubic foot.

Because buckets aren’t always filled perfectly and their actual capacities differ, this should be treated as an estimate.

---

How Many 5-Gallon Buckets Are in 2 Cubic Feet?

Using approximately 0.668 cubic feet per bucket:

2 ÷ 0.668 ≈ 2.99

Therefore:

2 cubic feet ≈ 3 five-gallon buckets

This is a particularly convenient conversion because three 5-gallon buckets contain approximately:

3 × 0.668 = 2.004 cubic feet

So you can use 3 buckets ≈ 2 cubic feet as a quick rule of thumb.

---

How Many 5-Gallon Buckets Are in 10 Cubic Feet?

For 10 cubic feet:

10 ÷ 0.668 ≈ 14.96

Therefore:

10 cubic feet ≈ 15 five-gallon buckets

This can be useful when moving or measuring loose materials such as:

• Soil
• Compost
• Mulch
• Sand
• Gravel
• Potting mix

---

5-Gallon Bucket to Cubic Feet Conversion Chart

Number of 5-Gallon Buckets	Approximate Cubic Feet
1	0.67 cu ft
2	1.34 cu ft
3	2.00 cu ft
4	2.67 cu ft
5	3.34 cu ft
6	4.01 cu ft
7	4.68 cu ft
8	5.35 cu ft
9	6.02 cu ft
10	6.68 cu ft
15	10.03 cu ft
20	13.37 cu ft

These figures assume each bucket contains a full 5 U.S. gallons.

---

How Many Cubic Feet of Water Are in a 5-Gallon Bucket?

A 5-gallon bucket filled with water contains approximately:

0.668 cubic feet of water

The volume doesn’t change simply because the material is water.

However, the weight does change depending on what material you put in the bucket.

A U.S. gallon of water weighs approximately 8.34 pounds.

Therefore, 5 gallons of water weighs roughly:

5 × 8.34 = 41.7 pounds

So a full 5-gallon bucket of water weighs approximately 41.7 pounds, plus the weight of the bucket itself.

---

How Many Cubic Feet of Soil Are in a 5-Gallon Bucket?

If you fill a 5-gallon bucket with soil, its volume is still approximately:

0.67 cubic feet

The important difference is weight.

Dry soil, wet soil, potting soil, and compacted soil can have dramatically different weights even though they occupy the same approximate volume.

For gardening and landscaping estimates, the volume conversion remains useful:

1 bucket ≈ 0.67 cubic feet

---

How Many Cubic Feet of Sand Are in a 5-Gallon Bucket?

A full 5-gallon bucket contains approximately:

0.67 cubic feet of sand

However, the weight of the bucket will depend on the type and moisture content of the sand.

Fine, wet sand can be considerably heavier than dry, loose sand.

For volume calculations, use:

5 gallons ≈ 0.668 cubic feet

---

How Many Cubic Feet of Gravel Are in a 5-Gallon Bucket?

A 5-gallon bucket filled with gravel contains approximately:

0.67 cubic feet

The exact amount of gravel by weight depends on:

• Gravel size
• Rock type
• Moisture
• Packing
• Voids between rocks

This is why volume and weight should not be treated as interchangeable measurements.

---

How Many Cubic Feet of Concrete Are in a 5-Gallon Bucket?

A 5-gallon bucket has approximately:

0.67 cubic feet of volume

If you fill the bucket with mixed concrete, the volume is still approximately 0.67 cubic feet.

However, you should be careful when using buckets to measure concrete. Fresh concrete is heavy, and a full 5-gallon bucket can be difficult or unsafe to lift.

For larger concrete projects, concrete is usually measured in cubic yards or cubic feet rather than buckets.

---

How Many 5-Gallon Buckets Equal a Cubic Yard?

This is a common question for landscaping and concrete projects.

One cubic yard contains:

27 cubic feet

A 5-gallon bucket contains approximately:

0.668 cubic feet

Therefore:

27 ÷ 0.668 ≈ 40.4

So:

1 cubic yard ≈ 40.4 full 5-gallon buckets

In practical terms, you can think of a cubic yard as approximately 40–41 five-gallon buckets.

This assumes the buckets are filled to their full 5-gallon capacity.

---

How Many 5-Gallon Buckets Are in a Half Cubic Yard?

A half cubic yard contains:

27 ÷ 2 = 13.5 cubic feet

Now divide by the capacity of a 5-gallon bucket:

13.5 ÷ 0.668 ≈ 20.2

Therefore:

½ cubic yard ≈ 20 five-gallon buckets

This is useful for estimating smaller landscaping projects.

---

How Many 5-Gallon Buckets Are in a Cubic Foot?

As noted earlier:

1 cubic foot ≈ 1.5 five-gallon buckets

The reverse calculation is:

1 five-gallon bucket ≈ 0.67 cubic feet

So the relationship can be summarized as:

1 bucket ≈ 0.67 cubic feet

1 cubic foot ≈ 1.5 buckets

---

5-Gallon Bucket vs. Cubic Foot

Measurement	Approximate Volume
1 gallon	0.134 cu ft
2 gallons	0.267 cu ft
3 gallons	0.401 cu ft
4 gallons	0.535 cu ft
5 gallons	0.668 cu ft
10 gallons	1.337 cu ft
20 gallons	2.674 cu ft
27 gallons	3.609 cu ft

This table uses U.S. gallons.

---

Why Does a 5-Gallon Bucket Not Look Like 0.67 Cubic Feet?

A cubic foot is a three-dimensional measurement.

One cubic foot is a cube measuring:

1 foot × 1 foot × 1 foot

A 5-gallon bucket is usually cylindrical or slightly tapered, so its shape looks very different from a cubic-foot box.

The volumes can nevertheless be equivalent.

A 5-gallon bucket contains approximately 1,155 cubic inches, while one cubic foot contains 1,728 cubic inches.

Therefore, a 5-gallon bucket occupies about:

1,155 ÷ 1,728 ≈ 67%

of one cubic foot.

---

Does a 5-Gallon Bucket Actually Hold Exactly 5 Gallons?

Not necessarily.

The term “5-gallon bucket” generally describes its nominal capacity. Actual dimensions and usable capacity can vary.

Factors include:

• Manufacturer
• Bucket shape
• Taper
• Rim design
• Fill line
• Interior dimensions
• Whether the bucket is filled to the very top

Some buckets marketed as 5-gallon containers may have slightly more or less usable capacity.

For precise applications, check the manufacturer’s specifications or measure the container.

---

How to Calculate the Volume of a Bucket From Its Dimensions

If you know the dimensions of a cylindrical bucket, you can calculate its approximate volume using the cylinder-volume formula.

V=πr2h

$V=\pi r^2h=\pi(\text{3.0})^2(\text{8.0})=\text{226.19}$V=πr2h=π(3.0)2(8.0)=226.19

$r$r

$r$r

$h$h

$h$h r = 3.0h = 8.0

Give feedback

For a perfect cylinder, you use the radius and height.

However, most 5-gallon buckets are tapered, meaning the top is wider than the bottom. As a result, the simple cylinder calculation may not perfectly match the actual bucket capacity.

For everyday material estimates, the nominal 5-gallon capacity is usually the easier measurement to use.

---

How Many 5-Gallon Buckets Do You Need?

To determine the number of buckets required for a project, first determine the total volume in cubic feet.

Then use:

Number of Buckets = Total Cubic Feet ÷ 0.668

For example, suppose you need to move 5 cubic feet of soil.

5 ÷ 0.668 ≈ 7.49

You would need approximately:

8 full 5-gallon buckets

This calculation assumes each bucket is filled to its full 5-gallon capacity.

---

Example: Moving 10 Cubic Feet of Mulch

Suppose you need to move 10 cubic feet of mulch.

Calculate:

10 ÷ 0.668 ≈ 14.97

Round up:

15 buckets

So approximately 15 full 5-gallon buckets are required to move 10 cubic feet of mulch.

In real-world use, you may need more trips if the buckets aren’t filled completely.

---

Example: How Many Buckets for 1 Cubic Yard of Soil?

One cubic yard contains 27 cubic feet.

A 5-gallon bucket contains approximately 0.668 cubic feet.

Therefore:

27 ÷ 0.668 ≈ 40.4

You need approximately:

41 buckets

if you’re counting whole buckets and want enough capacity to move the entire cubic yard.

---

5-Gallon Bucket Capacity in Other Units

A 5-gallon bucket contains approximately:

• 5 U.S. gallons
• 20 U.S. quarts
• 40 U.S. pints
• 640 U.S. fluid ounces
• 1,155 cubic inches
• 0.668 cubic feet
• 18.93 liters

The exact metric conversion is approximately 18.927 liters for 5 U.S. gallons.

---

U.S. Gallons vs. Imperial Gallons

Be careful when using the term “gallon.”

A U.S. gallon and an Imperial gallon are different sizes.

U.S. gallon

Approximately 0.1337 cubic feet

Imperial gallon

Approximately 0.1605 cubic feet

Therefore, a 5-U.S.-gallon bucket and 5-Imperial-gallon container do not have the same volume.

In the United States, a “5-gallon bucket” normally refers to 5 U.S. gallons.

---

Common Mistakes When Converting a 5-Gallon Bucket to Cubic Feet

Mistake 1: Assuming 5 Gallons Equals 5 Cubic Feet

Gallons and cubic feet are different volume units.

5 gallons ≠ 5 cubic feet.

Five gallons is only about 0.67 cubic feet.

Mistake 2: Confusing Cubic Feet With Square Feet

Cubic feet measure volume, while square feet measure area.

A bucket’s capacity should be measured in cubic feet, gallons, liters, or another volume unit.

Mistake 3: Ignoring the Difference Between U.S. and Imperial Gallons

Always determine which gallon measurement you’re using.

Mistake 4: Assuming Every Bucket Has Identical Capacity

Different manufacturers may produce buckets with slightly different actual dimensions.

Mistake 5: Confusing Volume With Weight

Five gallons of water and five gallons of soil have approximately the same volume but very different weights.

---

5-Gallon Bucket Conversion Cheat Sheet

For quick reference:

1 bucket

≈ 0.67 cubic feet

2 buckets

≈ 1.34 cubic feet

3 buckets

≈ 2.00 cubic feet

5 buckets

≈ 3.34 cubic feet

10 buckets

≈ 6.68 cubic feet

15 buckets

≈ 10.03 cubic feet

20 buckets

≈ 13.37 cubic feet

40 buckets

≈ 26.74 cubic feet

41 buckets

≈ 27.41 cubic feet

Therefore, approximately 40–41 five-gallon buckets equal one cubic yard.

---

FAQs

1. How many cubic feet are in a 5-gallon bucket?

A standard 5-gallon bucket contains approximately 0.668 cubic feet, commonly rounded to 0.67 cubic feet.

2. How many 5-gallon buckets are in a cubic foot?

One cubic foot is approximately 1.5 five-gallon buckets.

3. How many 5-gallon buckets are in a cubic yard?

One cubic yard contains 27 cubic feet, which is approximately 40.4 five-gallon buckets. For whole buckets, approximately 41 buckets provide enough nominal capacity.

4. How many cubic inches are in a 5-gallon bucket?

Five U.S. gallons equal approximately 1,155 cubic inches.

5. How many liters are in a 5-gallon bucket?

Five U.S. gallons equal approximately 18.93 liters.

6. Does a 5-gallon bucket hold the same volume of soil and water?

Yes. If both buckets are filled to the same capacity, they contain approximately the same volume—0.668 cubic feet. Their weights will be different.

7. How much concrete fits in a 5-gallon bucket?

By volume, a full 5-gallon bucket holds approximately 0.67 cubic feet of concrete. However, concrete is very heavy, so transporting a full bucket can be difficult and potentially unsafe.

---

Conclusion

So, how many cubic feet is a 5-gallon bucket?

The answer is:

A 5-gallon bucket holds approximately 0.668 cubic feet, or about 0.67 cubic feet.

The most useful conversions to remember are:

• 1 five-gallon bucket ≈ 0.67 cubic feet
• 1 cubic foot ≈ 1.5 five-gallon buckets
• 3 five-gallon buckets ≈ 2 cubic feet
• 1 cubic yard ≈ 40.4 five-gallon buckets
• 5 gallons = 1,155 cubic inches
• 5 U.S. gallons ≈ 18.93 liters

This conversion works for estimating the volume of water, soil, sand, gravel, mulch, concrete, and other materials. However, the weight of the material can vary considerably.

For everyday projects, the easiest rule to remember is one full 5-gallon bucket is roughly two-thirds of a cubic foot.

Discover More Articles

• How Many Feet Do Low Beam Headlights Illuminate?
• How Many Square Feet in a Double Garage?
• How Many Square Feet of Asphalt Are in a Ton?