The Ultimate Guide to Postcard Sizes: Standard Dimensions, International Formats, and USPS Requirements

12/27/2024

Standard postcard sizes


Standard postcard sizes vary slightly depending on the country and region, but here are some common ones:

1. **International standard:** 148 mm × 89 mm (5.8 in × 3.5 in) - This is a widely accepted size for postcards worldwide.
2. **United States:** 3.5 inches × 5.5 inches (89 mm × 140 mm) - This is the traditional size for postcards in the US, and many greeting cards are also this size.
3. **Australia:** 114 mm × 76 mm (4.5 in × 3.0 in) - This is a common size for postcards in Australia, although some may be slightly larger or smaller.
4. **Canada:** 102 mm × 148 mm (4.0 in × 5.8 in) - Similar to the US size, but slightly smaller.
5. **Europe (standard):** 118 mm × 89 mm (4.6 in × 3.5 in) - This size is commonly used for postcards in many European countries.

Remember that these are general guidelines, and some postcard sizes may vary depending on the country or region. However, these standard sizes provide a good starting point when designing or sending postcards internationally.


Standard postcard size in cm


The standard postcard size in centimeters is typically:

* Length: 9-10 cm (3.5-3.9 inches)
* Width: 14-15 cm (5.5-5.9 inches)

These dimensions are commonly used for postcards in many countries, although there may be slight variations depending on the country or region.

In metric measurements, this would translate to:

* Length: approximately 10.2-10.8 cm
* Width: approximately 14.2-15.2 cm


Postcard sizes in inches


Postcard sizes can vary, but here are some common standard postcard sizes in inches:

1. **Standard Postcard**: 3.5 x 5.5 inches (8.9 x 14 cm)
This is the most widely accepted and commonly used postcard size.
2. **Jumbo Postcard**: 4.25 x 6.0 inches (10.8 x 15.2 cm)
These postcards are larger than standard ones, often used for special occasions or unique designs.
3. **Mini Postcard**: 2.5 x 3.5 inches (6.4 x 8.9 cm)
These smaller postcards are great for sending short messages or as a keepsake.
4. **Square Postcard**: 4.0 x 4.0 inches (10.2 x 10.2 cm)
These square-shaped postcards can be used to send photos, artwork, or other visually appealing content.

Keep in mind that these sizes are not absolute and some countries may have slightly different standard postcard sizes. Additionally, some specialized postcards, like those for specific industries or events, might have unique sizes as well.

Now, which size will you choose for your next postcard adventure?


Postcard size in mm


Postcards come in various sizes, and here are some common standard postcard sizes in millimeters (mm):

1. **Standard International Postcard**: 148 x 89 mm (5.8 x 3.5 inches)
2. **Standard US Postcard**: 127 x 89 mm (5.0 x 3.5 inches)
3. **Large Postcard**: 160 x 110 mm (6.3 x 4.3 inches) - often used for artistic or collectible postcards
4. **Small Postcard**: 100 x 74 mm (3.9 x 2.9 inches) - commonly used for travel postcards or mini-artworks

Please note that these sizes are not set in stone, and some countries may have slightly different standards. Additionally, some postcards might be irregularly shaped or have non-standard dimensions.

Now, if you're looking to create digital artwork for a postcard or need to print one out, it's essential to know the correct size.


Postcard size in pixels


Postcard size is typically defined as a rectangular shape with dimensions of 4 inches x 6 inches (10.2 cm x 15.3 cm). To convert this to pixels, we need to consider the resolution of the screen or device where the postcard will be displayed.

Here are some common resolutions and their corresponding pixel sizes for a postcard:

* **Low-resolution e-reader or basic smartphone**: 400 x 600 pixels
* **Standard-resolution tablet or mid-range smartphone**: 800 x 1200 pixels
* **High-resolution tablet or high-end smartphone**: 1600 x 2400 pixels
* **Retina display (e.g., iPad or iPhone):** 3008 x 4508 pixels

Keep in mind that these are rough estimates and the actual pixel size may vary depending on the specific device and screen resolution. If you're designing a postcard for a specific platform, like Instagram or Facebook, you can refer to their guidelines for recommended image sizes.

For general use, a good starting point would be:

* **Minimum:** 800 x 1200 pixels (standard-resolution tablet or mid-range smartphone)
* **Recommended:** 1600 x 2400 pixels (high-resolution tablet or high-end smartphone)

Remember that larger images can be scaled down, but smaller images cannot be easily enlarged without losing quality. So, it's usually best to design with a higher resolution in mind.


4x6 postcard size in cm


The standard dimensions for a 4x6 postcard are:

* Length: 10.2 cm (4 inches)
* Width: 15.2 cm (6 inches)

So, the dimensions you're looking for are approximately 10.2 x 15.2 cm in centimeters.


USPS postcard size


USPS (United States Postal Service) postcards have specific dimensions and requirements. Here are the key details:

1. **Size:** The standard size for a USPS postcard is 3.5 inches wide by 5 inches long (89 mm x 127 mm).
2. **Thickness:** Postcards can be up to 0.016 inch (0.4 mm) thick.
3. **Weight:** The maximum weight for a postcard is 1 ounce (28 grams).
4. **Mailing requirements:** To qualify as a postcard, the item must:
* Have a rectangular shape with a flat surface on both sides.
* Be addressed to a specific recipient and have the recipient's name or title legibly printed.
* Carry a postage stamp of at least 35 cents (the current postcard rate).
5. **Content:** Postcards can contain any type of message, including photographs, artwork, or written text.

It's essential to note that USPS has specific requirements for the design and content of postcards, including:

* The front side must be blank or have a printed message that is not readable as a mailing address.
* The back side (or "address side") must have a clear and legible return address and a postage stamp.

If you're planning to create a postcard for mailing, make sure to follow these guidelines to ensure it meets USPS requirements.


USPS postcard size rates


USPS (United States Postal Service) postcard-size rate is a great option for sending lightweight, rectangular-shaped mailpieces. Here are the current rates and dimensions:

**Standard Postcard Rate:**

* Size: 3.5 inches x 5 inches (8.9 cm x 12.7 cm)
* Weight: Up to 1 oz (28.35 grams)
* Cost: $0.32 per piece (as of January 2022)

**Large Envelope Postcard Rate:**

* Size: 4.5 inches x 6.125 inches (11.43 cm x 15.57 cm) or larger
* Weight: Up to 1 oz (28.35 grams)
* Cost: $0.32 per piece (as of January 2022)

**Notes:**

* The standard postcard rate is only available for rectangular mailpieces that meet the size and weight requirements.
* Large envelope postcards can be any shape or size, as long as they fit within the larger dimensions listed above.
* Postcards weighing more than 1 oz will incur additional postage at the First-Class Mail letter rate.
* If your postcard has a non-machinable enclosure (e.g., a packet or a brochure), you'll need to use the First-Class Mail letter rate.

Keep in mind that these rates and dimensions are subject to change, so it's always a good idea to check the USPS website or consult with your local post office for the most up-to-date information.