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MTG Card Size Guide: Dimensions Matter

hand holding mtg cards

Table of Contents

As every hardcore Magic the gathering fan should know, getting the MTG card dimensions right is essential for authenticity.

I mean you cannot go into battle with an MTG proxy card the size of a postcard, complete with Mount Fuji drawn to scale on it.

Not only will a semi-experienced player (heck, even an absolute beginner) notice, but even slight deviations from the true dimensions will stand out when placed alongside authentic cards.

That's why the first step in creating your own proxy MTG card is to get the card size right.

This blog will dive deep into why you might create proxy MTG cards, the official dimensions, and the legalities surrounding them.

If you're looking for a detailed guide on how to create your own proxy cards, we've got you covered here.

Trading card standard dimension

What Is the Official MTG Card Size?

The standard MTG card size is:
  • 2.5 inches x 3.5 inches (63.5 mm x 88.9 mm)

  • Corner Radius: 2.5 mm (0.1 inches)

  • Thickness: ~0.012 inches (0.305 mm) for non-foil cards

  • Weight: ~1.75 grams
These MTG card dimensions are consistent across nearly all regular cards printed for play.

*This card size is also used by Pokémon and standard poker cards, making sleeves and storage universally compatible.

Why MTG Card Dimensions Matter

Maintaining the correct MTG card dimensions ensures:
  • Compatibility with standard sleeves (66 mm x 91 mm)

  • Fairness in gameplay and tournaments

  • Consistent shuffling and deck handling

  • Unmarked cards—essential for competitive play
If you stary even a as little as a few millimeters off the official Magic card size it can result in disqualification at sanctioned events or suspicion of cheating.

So the official ruling is that MTG card size is 2.5 x 3.5 inches, or 6.35 x 8.89 cm. 

Whether you are creating them for friendly play, deck build and test or even to sell, the size does matter. 

black card with a question mark on it

What are Proxy Cards?

As a true MTG Enthusiast knows, there’s more to the game than just strategy and skill—there's also the art of getting every detail right. So when it comes to MTG proxy cards, also known as proxy cards, you have to get it right.

Proxy cards are copies of the real card and are used as a substitute for the real thing.
 
They serve several important purposes:
  • Protection: They allow you to play with valuable cards without risking damage to your originals.
  • Budget-Friendly: They let you build competitive decks at a fraction of the cost of authentic cards.
  • Playtesting: They enable you to experiment with different card combinations before investing in originals.
Its important to stress that even though its a copy, there needs to be  distinct (in your face kinda)  difference that marks the card as a proxy otherwise it could be copyright infringement. 
 
And while MTG proxy cards offer many benefits, it's important to note that they're not legal in official tournaments or sanctioned events. They're best used for casual play, playtesting, or collecting purposes.
 
Creating your own proxy cards can be a fun and rewarding project. You'll need quality printing materials, precise cutting tools, and attention to detail to ensure they match authentic cards in both size and feel. 

Just so you know, we have a blog covering both a DIY and professional route.
Create Your Own Proxy Card

Are MTG Proxy Cards Legal?

Yes, but under strict conditions.

In official tournament settings for trading card games like Magic: The Gathering, proxy cards are not permitted. The organizers of these events  require authentic cards to maintain fairness and integrity in competition.

This makes perfect sense as having proxy cards of the highest caliber would put one at a unfair advantage.

In another popular Trading Card Game with tournaments and proxy cards is Yu-Gi-Oh! Championship Series. They also explicitly state that proxy cards are forbidden in tournament pay.

 
Furthermore this includes any form of photocopies, relabeled cards, or other substitutes that represent another card.
 

It only makes sense that Magic: The Gathering sanctioned events follow suit.

When is it legal then?

It is acceptable to create and use proxy cards for personal use such as play testing, and friendly battle with friends.

 
Do keep in mind that the designs and trademarks of official trading card games are protected intellectual property, so commercial use of proxy cards would likely be problematic.
 
In summary, while proxy cards can be a valuable tool for playtesting and casual enjoyment, they are not legal in official tournament settings.
 
Always check the specific rules of any event you plan to attend, and be mindful of copyright considerations if you're creating proxy cards for anything beyond personal use.

MTG vs. Other TCGs Comparison Table

Card Size Comparison

How MTG Card Size Compares to Pokémon, Yu-Gi-Oh!, and Poker Cards

Game Dimensions (Inches) Dimensions (mm) Sleeve Compatibility
MTG 2.5" x 3.5" 63.5 x 88.9 Standard (66x91 mm)
Pokémon TCG 2.5" x 3.5" 63.5 x 88.9 Fully Compatible
Yu-Gi-Oh! 2.31" x 3.37" 59 x 86 Requires "Mini" Sleeves
Poker Cards 2.5" x 3.5" 63.5 x 88.9 Fully Compatible
Make Your Own Trading Card

It may come as a surprise to you that MTG Card artwork size has changed twice Over the years. Magic’s card frames have evolved, altering artwork size while keeping overall dimensions consistent.

three different dimensions shown on card outline

MTG Card Artwork Dimensions

Many people ask about the card size but less about the artwork size. Both sides need to be accurate in order for authenticity and over the years the magic has altered their cards frames.

  • Original border (1993-2003): 1.9 × 1.53 in (48.5 × 39 mm)
  • Modern border (2003-2014): 2.06 × 1.52 in (52.5 × 38.5 mm)
  • Postmodern border (2014-): 2.09 × 1.54 in (53 × 39 mm)

Therefore depending on the card, you want to proxy you should take note of the dimensions.

Read our The World of MTG Proxy Cards: Everything you need to know

FAQ General

Most are 2.5" x 3.5", but oversized promos (e.g., Vanguard cards) measure 3" x 5"

Yes! Both games share the same dimensions

They are not legal in tournaments, but fine for personal use. Always mark proxies clearly to avoid confusion or copyright issues.

Conclusion

You know the official MTG card size and how proxy card works. 

No doubt there is a small percentage of people reading who are looking for the correct size so that they can make their own proxy cards to test their deck. 

Need Help with MTG Proxy Cards?

 We offer tools, templates, and printing solutions to help you create perfectly sized custom cards. Contact us or explore our full how to make trading cards guide.

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Have questions about proxy cards or need help creating your own? Let's connect!