How to Create a Custom Envelope with Rectangular Paper

Ever found yourself in need of a custom envelope but didn't want to shell out for expensive stationery? You're in luck! Crafting an envelope from a simple rectangle of paper is easier than you think. With just a few folds and some glue, you can create a personalized envelope that's perfect for letters, invitations, or even small gifts. Let's dive into the step-by-step process of making an envelope with rectangle paper.

two hands holding up a piece of blue paper with the words easy crafts on it
two hands holding up a piece of blue paper with the words easy crafts on it

Before we begin, gather your materials: a rectangle of paper (any size will do), a ruler, a pencil, scissors or a craft knife, and some glue or double-sided tape. Once you have everything ready, let's start creating your envelope.

Envelope from standard letter size paper
Envelope from standard letter size paper

Preparing Your Paper

Start by measuring and marking the folds you'll need to make. For a standard envelope, you'll need to fold the paper in half lengthwise, then fold the sides in to meet the center crease. The measurements will depend on the size of your rectangle, so use your ruler to ensure accuracy.

a person holding up a pink card with the number 4 on it and two hands
a person holding up a pink card with the number 4 on it and two hands

Once you've marked your folds, use the edge of the ruler to score the paper lightly. This will make folding easier and ensure crisp creases. Be careful not to cut through the paper.

Folding the Envelope Flap

Two Easy Foldable Letters
Two Easy Foldable Letters

Fold the top two corners of your rectangle in to meet the center crease. You should now have a long, narrow strip at the top of your paper. Fold this strip downwards, creating the envelope's flap. The size of this fold will determine how much of the envelope's front will be covered by the flap.

To ensure a neat fold, use your finger or the edge of the ruler to press down firmly along the crease. You can also gently tap the fold on a hard surface to flatten it.

Folding the Envelope Sides

✉️ How To Make An Envelope Out Of A4 Paper
✉️ How To Make An Envelope Out Of A4 Paper

Next, fold the sides of your rectangle inwards, so the edges meet the center crease. These folds will become the sides of your envelope. Again, use your finger or the ruler to press down firmly along the creases, ensuring they're crisp and well-defined.

Once you've folded the sides, you should have a long, narrow strip of paper with a folded flap at one end. This strip will form the bottom and back of your envelope.

Assembling Your Envelope

HOW TO MAKE AN ENVELOPE FOR LETTERS WITHOUT GLUE STEP BY STEP | EASY PAPER ENVELOPE INCL ART
HOW TO MAKE AN ENVELOPE FOR LETTERS WITHOUT GLUE STEP BY STEP | EASY PAPER ENVELOPE INCL ART

Now that your paper is folded, it's time to assemble the envelope. Start by opening the envelope's sides and bottom, so it lies flat. You should now have a rectangle with a folded flap at one end and three open sides.

Apply glue or double-sided tape along the edges of the two side flaps. Be careful not to get glue on the inside of the envelope, as this could make it difficult to seal later.

Envelope origami
Envelope origami
how to make origami envelopes with pictures and instructions - step by step
how to make origami envelopes with pictures and instructions - step by step
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Long Envelope Tutorial
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Easy! How to create your own envelope
Easy! How to create your own envelope
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DIY Full Size Envelope! #craft #art #diy #papercraft #stationery #tips #crafting
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Quick & Easy DIY Envelope 💌✨
someone is cutting out pink paper on top of a green surface with scissors and a ruler
someone is cutting out pink paper on top of a green surface with scissors and a ruler
DIY envelope with A4 paper, I hope it helps
DIY envelope with A4 paper, I hope it helps
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50+ DIY Envelopes & Liners: {Free Templates & Tutorials}
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Perfect envelope using just Letter / A4 size paper - no glue needed 😃🤗#papercraft #paperenvelope
someone is holding an origami flowered envelope in their left hand and the other one has it open
someone is holding an origami flowered envelope in their left hand and the other one has it open
origami envelopes are sitting on a marble table with the words for you written on them
origami envelopes are sitting on a marble table with the words for you written on them
How to make envelope/ Origami /  편지봉투만들기/ 종이접기 / DIY
How to make envelope/ Origami / 편지봉투만들기/ 종이접기 / DIY
how to make an origami envelope step by step instructions for kids and adults
how to make an origami envelope step by step instructions for kids and adults

Securing the Envelope Sides

Fold the side flaps inwards, pressing them firmly against the center crease. Hold them in place for a few seconds to ensure the glue or tape adheres properly. Once the sides are secure, you should have a flat envelope with an open bottom and a folded flap at the top.

If you're using double-sided tape, you can skip the next step. If you're using glue, allow it to dry completely before proceeding. This will ensure your envelope stays closed and maintains its shape.

Sealing the Envelope Bottom

Fold the bottom edge of your envelope upwards, creating a small flap. Apply glue or double-sided tape to this flap, then fold it downwards, pressing it firmly against the inside of the envelope. This will seal the bottom of your envelope, creating a secure, enclosed space.

Again, if you're using glue, allow it to dry completely before using your envelope. This will ensure it stays closed and maintains its shape.

And there you have it! With just a few simple folds and a bit of glue, you've created a custom envelope from a rectangle of paper. Whether you're sending a letter, an invitation, or a small gift, your handmade envelope is sure to make a great impression. Happy crafting!