Expert Guide for Your Next Painting Project

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If you’re planning a painting project, one of the first questions you’ll likely have is: What size paint will I need? In this post, I’ll give you a detailed answer to that question by breaking down standard paint can sizes and how they relate to your project. You’ll discover:

Common sizes of paint cans and the area they cover
A step-by-step guide to calculating paint requirements
Expert advice on choosing the perfect paint can size

And other!

By the end of this post, you’ll have all the knowledge you need to confidently choose the right size paint can.

By the way, before I get too far here, if you want to connect with other homeowners, DIYers, and builders and get more great ideas for your home to make your space the best, join my group free facebook private, Reshape Reality here.

Table of Contents

Common standard dimensions of paint cans

Not sure what size paint you need for your project? (Been there!) This guide covers the most common (and unusual) paint can sizes and will help you find the perfect size for your project.

Paint box size	Volume (Imperial)	Volume (metric)	Coverage (sqft)	Coverage (m²)	Recommended use
Retouch size	0.5-1 fl oz	15-30 ml	3-8 sqm	0.3-0.7 square meters	Small touches, detail work
Sample size	2-4 fl oz	59-118 ml	25-50 sqm	2-5 sqm	Small projects, color testing
Half a pint	8 fl oz	237 ml	50-60 square meters	4.6-5.6 square meters	Small, handcrafted furniture
Mug	16 fl oz	473 ml	60-80 sqm	5.6-7.4 square meters	Average furniture, small rooms
Quart	32 fl oz	946 ml	100-125 sqm	9-12 sqm	Small rooms, accent walls
Gallon	128 fl oz	3.78 l	350-400 sqm	32-37 sqm	Medium rooms, multiple accent walls
2 gallons	256 fl oz	7.57 L	700-800 sqm	65-74 sqm	Large rooms, multiple rooms
5 gallons	640 fl oz	18.93 L	1750-2000 sqm	162-186 sqm	Whole house, exterior projects

Quarter pint paint cans

Dimensions and volume: The quart cans hold 4 fluid ounces (0.12 liters) of paint and measure 2 ½ inches in diameter and 2 1/16 inches in height. (Small but mighty paint can!)

Ideal for: Perfect for small touch-ups, crafts or testing colors before committing to a larger size.

Half pint cans of paint

Your trusted company for touch-ups and small projects

Dimensions and volume: Half-pint paint cans hold about 8 fluid ounces (0.24 liters) of paint and typically measure about 2.88 inches in diameter and 3.5 inches in height. (The little brother of the paint cans!)

Amount of coverage: One layer can cover about 43.75 square meters! But keep in mind that factors like paint type and surface texture can influence coverage, so it’s always a smart move to check the label. (Stay informed!)

Ideal for touch-ups or small areas: Half pint paint cans are perfect for those small projects or touch ups around the house. From freshening up a small piece of furniture to adding a splash of color to a nook or corner, these little boxes pack a punch. And for bigger jobs, you’ve got quart, half-gallon, and gallon cans to save the day. (Big or small, we’ve got you covered!)

Pint-sized cans of paint

Dimensions and volume: The pint-sized cans hold 16 fluid ounces (0.47 liters) of paint and measure 3 7/16 inches in diameter and 3 15/16 inches in height. (Cups aren’t just for drinks!)

Ideal for: Ideal for small to medium projects or cutting jobs.

Quart size paint cans

The perfect partner for smaller paint projects

Size and volume: Quart-sized paint cans pack a punch in a compact package. Containing approximately 32 fluid ounces (0.95 liters) of paint, these cans typically measure approximately 4.25 inches in diameter and 5 inches in height. (Small but mighty!)

Coverage Amount: A single liter can cover approximately 87.5 square meters with a single coat. But remember that factors like paint type and surface texture can influence coverage, so always check the label. (Knowledge is power!)

Ideal for smaller projects or trim jobs: Quart-sized paint cans are perfect for those smaller tasks like touching up furniture, painting trim, or adding a splash of color to an accent wall. And if you need more paint, don’t worry—gallons and five-gallon buckets are ready to step up for bigger projects. (You got this!)

Half gallon paint cans

The sweet spot between small and large paint jobs

Dimensions and Volume: Half-gallon paint cans hold about 64 fluid ounces (1.9 liters) of paint and typically measure about 6.5 inches in diameter and 7.5 inches in height. (The middle child of paint cans!)

Amount of coverage: With one coat, you can cover about 175 square meters! But remember, factors like paint type and surface texture can affect coverage, so it’s always a good idea to check the label. (Knowledge is the key!)

Ideal for smaller projects or trim jobs: Half-gallon paint cans are your choice for projects that require a little more paint than a quart, but not quite as much as a full gallon. Consider making smaller room changes, retouching or painting trim and doors. And for even bigger jobs, there are gallon and five-gallon buckets available to tackle like a pro.

Single gallon paint cans

The ideal choice for both professionals and DIYers

Size and Volume: Gallon paint cans are the industry standard, holding approximately 128 fluid ounces (3.78 liters) of paint. You will find that these boxes are approximately 6.5 inches in diameter and approximately 7.5 inches in height.

Coverage Amount: A single gallon of paint typically covers about 350 square feet, but keep in mind that factors such as paint type and surface texture can affect coverage.

Ideal for larger projects: Gallon paint cans are perfect for large jobs such as painting entire rooms or exteriors. Planning a smaller project? Smaller sizes like liters, pints, and fluid ounces are also available! (Isn’t it great to have options?)

Five liter cans of paint

Dimensions and Volume: Five-quart cans hold 190 fluid ounces (4.73 liters) of paint, measuring 6 ⅝ inches in diameter and 9 ½ inches in height. (Bigger projects? No problem!)

Ideal for: Perfect for larger projects or when a one-gallon can isn’t enough. (Go big or go home!)

Two gallon paint cans

A convenient choice for larger painting projects

Size and volume: Two-gallon paint cans offer double the volume of standard gallon cans, holding approximately 256 fluid ounces (7.57 liters) of paint. These boxes are usually around 9 inches in diameter and 9 inches in height.

Amount of coverage: A two-gallon can of paint will generally cover about 700 square feet, although factors such as paint type, color, and surface texture can affect coverage exact.

Ideal for Substantial Projects: Two-gallon paint cans are suitable for larger paint jobs, such as covering several rooms or tackling an expansive exterior project. They provide more paint without having to purchase multiple gallon cans, making them a practical choice for larger jobs. If your project is smaller in scale, remember that there are other sizes available, such as gallons, liters, pints, and fluid ounces, to suit your specific needs.

Five gallon paint buckets

The ultimate solution for large painting projects

Size and volume: Five-gallon paint buckets typically hold about 640 fluid ounces (18.9 liters) of paint, with a diameter of about 12 inches and a height of 14.5 inches. (Now that’s a lot of paint!)

Coverage Amount: A single bucket can cover an amazing 1,750 square feet in one coat! Of course, factors like paint type and surface texture can affect coverage, so always check the label. (Better safe than sorry, right?)

Ideal for larger projects: Five-gallon paint buckets are perfect for sizable undertakings, such as whole-house painting or multi-room renovations. And remember, smaller sizes like gallons, quarts, and pints are available for those less ambitious endeavors. (There’s a paint size for every project!)

Other dimensions of paint cans: Discovering the unsung heroes of paint cans

Think you’ve seen it all when it comes to paint cans? Think it over! Discover the unsung heroes of paint parts and how they can be perfectly suited for your unique project.

Intermediate sizes

Size and volume: The family of paint cans is diverse, with sizes in between, such as 2 liter (67.6 fluid ounce) cans or 32 ounce cans. These «in-between» sizes usually have sizes that vary by manufacturer, so it’s best to check the label for details. (It’s all about those unique measurements!)

Amount of coverage: As with any can of paint, coverage depends on factors such as the type and surface of the paint. You can generally expect these in-between sizes to cover more square footage than a quart, but less than a gallon. (The sweet spot between big and small!)

Less common: Although not as common as their pint or gallon counterparts, intermediate sizes of paint cans can be found at certain hardware and paint stores. Keep an eye out for these hidden gems that might be perfect for your project! (To find the elusive paint can unicorn!)

Cans of spray paint

Standard sizes and volume: When it comes to spray paint cans, the standard size usually holds about 12 fluid ounces (0.35 liters). But fear not, smaller and larger options are available so you can find the perfect fit for your project (Spray with confidence!)

Amount of Coverage: Spray paint cans offer a different type of coverage compared to traditional paint cans. A 12-ounce can typically covers about 10-15 square feet, depending on factors such as paint type, color, and surface texture. (Maximum versatility!)

Ideal for: Cans of spray paint are perfect for a wide range of projects, from DIY crafts and small touch-ups to painting furniture, home decor or even auto parts. Always be sure to follow the manufacturer’s instructions for best results. (Safety first, DIYers!)

How to choose the right size of paint box

When it comes to estimating the amount of paint for your project, knowing how many gallons of paint you need is essential. You want to make sure you have the right amount of paint to avoid running out halfway through the project or overspending on unused cans.

Calculating paint coverage per box size

Knowing how much surface area a gallon of paint covers is essential to estimating the amount of paint for your painting project. Here’s a general breakdown of the coverage you can expect from different paint can sizes:

A quarter pint of paint: Ideal for small touch-ups or for testing paint color
Half a liter of paint: Perfect for smaller projects such as painting a single piece of furniture
One liter of paint: Covers about 87.5 square meters with one coat, suitable for a small room or home office
Half a gallon of paint: Covers about 175 sq ft with one coat, great for an average sized room
Paint Gallon: Covers approximately 350 square feet with one coat, perfect for larger rooms or exterior paint jobs

These estimates are just a rule of thumb, as actual coverage may vary depending on the type of paint, surface texture, and whether you’re using a light or dark color.

Given the number of layers required

The number of coats of paint required for your project depends on several factors:

Paint type: Oil-based paints generally provide better coverage than water-based paints and may require fewer coats.
Paint color: Dark colors usually need several coats to achieve full opacity, especially when covering a lighter base color.
Surface texture: Rough or porous surfaces may absorb more paint, requiring additional coats for even coverage.

As the next step in your project, visit a paint store to contact experts/professional painters about the paint you plan to use. They can provide guidance on the best way to achieve the desired finish, taking into account the number of coats required for the type and color of paint chosen.

Calculation of the total surface to be painted

To accurately estimate the amount of paint needed, you’ll need to calculate the total surface area of the walls you plan to paint. Measure the height and width of each wall, subtracting any doors or windows, and multiply the measurements to determine the square footage. Don’t forget to include some feature walls or other unique features that might require less paint.

Once you have the total area, divide it by the coverage provided by the size of paint you plan to use. For example, if you’re painting a room with 500 square feet of wall space and using a gallon of paint that covers 350 square feet per coat, you’ll need about 1.43 quarts of paint for a single coat.

The formula for calculating the total surface to be painted is:

Total area = Number of walls x Height of walls x Width of walls

This formula takes into account the number of walls to be painted, the height of each wall, and the width of each wall. By multiplying these values together, you can determine the total area to be painted.

For example, if you have a room with four walls, each wall is 8 feet high and 10 feet wide, the total area to be painted would be:

Total area = 4 x 8 x 10 Total area = 320 square meters

This formula can be slightly modified to account for irregularly shaped walls or rooms with a different number of walls. Simply adjust the values for the number of walls, height and width accordingly to get an accurate calculation of the total area to be painted.

Now that you’re familiar with the different sizes of paint cans, it’s time to choose the right one for your project. Here are some tips to help you make the best decision:

Estimate your paint needs: Measure the area you plan to paint and calculate the square footage. This will help you determine how much paint you will need based on the coverage estimates provided on the label the paint box.
Consider the number of layers: Depending on the type of paint, color and surface, you may need several coats. Adjust the amount of paint accordingly.
Consider the tweaks: It’s always a good idea to have a little extra paint on hand for future touch-ups. Consider purchasing a smaller can (such as a quart or pint) in addition to the main amount of paint.

Don’t forget the primer: If you use a primer, don’t forget to consider its coverage as well. You may need more or less paint depending on the use of a primer.
Pick up: It’s better to have a little extra paint than not enough. If in doubt, round to the nearest paint can size.

Paint Like a Pro: Tips for Choosing the Right Size of Paint

Have you ever felt overwhelmed by the ocean of paint cans in the store? (We’ve all been there). Here’s a comprehensive guide to help you master the art of selecting the perfect paint size.

The art of choosing small containers of paint

Small cans of paint, big advantages.

Why?

Well, for starters, they’re perfect for small projects (think splashbacks and accent walls). Plus, less paint means less waste.

Plus, paint goes a long way in some situations.

Small containers of paint are also great for color testing (better safe than sorry, right?). You’ll thank yourself for trying this bold shade before committing (phew!).

Going Big: When bigger is better

Sometimes size matters (especially in the paint aisle).

When approaching a large project, it is wise to opt for larger paint containers (bulk is your friend). Remember, bigger cans of paint = more savings (and fewer trips to the store).

Don’t forget about color consistency (you don’t want patchy walls). Larger paint containers help ensure an even shade (hello, smooth finish!).

Middle Moment: Intermediate paint sizes

Goldilocks was right (not too big, not too small).

Intermediate paint sizes are perfect for these between projects (half bath, anyone?). You’ll get the coverage you need without overbuying (don’t waste, don’t want).

Plus, it’s great for when you are not sure about future tweaks (accidents happen). You’ll have enough paint to fix any accidents (without overdoing it).

Paint calculators: Your online company

Who knew math could be so useful? (No computers required, we promise).

Meet your new best friend: online paint calculators (just click here to use ours). Plug in your measurements and let the magic happen (goodbye, guesswork).

Don’t forget to keep in mind doors, windows and trim (every square centimeter counts). Your calculator will do the math, leaving you worry-free (and ready to paint).

Expert advice: your key to paint perfection

Not sure which paint size to choose? (This happens to the best of us).

Consulting a professional painter it’s always a smart move (they’re the paint whisperers, after all). Remember, sometimes it’s okay to call a friend (especially when they’re a paint pro).

Master the art of estimating the amount of paint

Tired of running out of paint halfway through your project? (Or worse, having too much?) Discover the secrets to accurately estimating paint quantity like a pro. Are you ready to unlock these painting hacks? Let’s dive in!

Paint Coverage 101: Size Matters

You may be asking yourself, «How much paint do I need?» (Good question!)

First things first: understand the paint coverage on the size of the box. Did you know? One gallon typically covers 350-400 square feet (but always check the label).

For smaller projects, consider a quart (covers 80-100 sq ft) or a pint (40-50 sq ft). Remember, every brand is different (so read those labels!).

To double or not to double?

The number of coats matters (more than you think).

When selecting colors, consider the number of layers required. Lighter shade over a dark wall? You will need several coats (and more paint).

Pro tip: Go for high-quality paint (it might save you that extra coat). Trust us, your wallet (and arms) will thank you.

Measuring your space: Accuracy is key

No more guesswork (accuracy is the name of the game).

Take a measuring tape and calculate the square footage of your room. Length x width = your magic number (like that!).

Don’t forget those nooks and crannies (every inch counts). Subtract windows and doors (but add a little extra for touch-ups).

Next steps

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