How To

How To Make An Envelope


How To Make An Envelope

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How To Make An Envelope

How to Make an Envelope: A Step-by-Step Guide in Standard American English


In the world of communication, envelopes serve as the protective and professional guardians of our written messages. Whether it’s a formal letter, an invitation to a special occasion, or just a friendly note, a well-crafted envelope adds a touch of elegance and ensures the safe delivery of its contents. Join us on a step-by-step journey as we explore the art of envelope-making, transforming a simple sheet of paper into a practical and stylish carrier of your words.

Materials You’ll Need

  • A sheet of paper (8.5 x 11 inches or A4 size recommended)
  • Ruler or measuring tape
  • Pencil or pen
  • Scissors
  • Optional: Bone folder or other creasing tool

Step-by-Step Instructions

1. Mark the Center and Folds

  • Position the paper in landscape orientation (horizontally).
  • Measure and mark the exact center point on the top and bottom edges.
  • Using a ruler or measuring tape, draw a vertical line 4 inches from the left edge and 4 inches from the right edge, parallel to the top and bottom edges.

2. Create the Triangles

  • Connect the center points on the top and bottom edges to the marks made in step 1.
  • You should now have two right triangles on either side of the center point.

3. Fold the Triangles

  • Fold the left triangle over to meet the center line.
  • Repeat with the right triangle, folding it over to meet the center line.
  • Crease the folds firmly with a bone folder or your fingers.

4. Form the Envelope Base

  • Lift the top triangle and insert the bottom tip into the pocket created by the folded triangles.
  • Fold down the top triangle to cover the bottom tip, overlapping it slightly.
  • Crease the fold to secure the base of the envelope.

5. Trim Excess Paper

  • With the envelope assembled, trim any excess paper that extends beyond the edges of the envelope base.
  • Ensure that the trimmed edges are straight and even.

6. Create the Closure Flap

  • Fold the top edge of the envelope down by approximately 1 inch.
  • Fold down the sides of the closure flap to align with the sides of the envelope base.
  • Crease all folds firmly.

7. Moisten and Seal

  • Apply a small amount of water or glue to the inside of the closure flap.
  • Press down the flap to seal the envelope securely.

Variations and Customization

  • Custom Size: Adjust the measurements to create envelopes of various sizes to accommodate different documents.
  • Decorative Paper: Use colorful or patterned paper to add a touch of flair to your envelopes.
  • Embellishments: Embellish your envelopes with stickers, stamps, or other decorative elements to make them stand out.
  • Windowed Envelopes: Cut a rectangular hole in the center of the envelope before assembling to create a viewing window for the recipient’s address.

Tips for a Professional Finish

  • Use high-quality paper for a sturdy and elegant envelope.
  • Measure and cut precisely for a clean and uniform look.
  • Crease all folds firmly to ensure a secure seal.
  • Seal the envelope completely to prevent tampering and protect its contents.


  • What is the standard size for a business envelope?
    Standard business envelopes in the United States measure 10 x 4 1/8 inches.

  • How do I address an envelope correctly?
    The recipient’s name and address should be written in the center of the envelope, with the postage stamp in the upper right corner.

  • Can I send an envelope without a stamp?
    No, postage is required for all mail in the United States.

  • How do I prevent the envelope from tearing?
    Use sturdy paper and reinforce the edges by folding them down slightly.

  • What is the purpose of a windowed envelope?
    Windowed envelopes allow the recipient’s address to be visible through a transparent window, eliminating the need for a separate label.


With a few simple steps and a touch of precision, you now possess the knowledge to create custom envelopes that not only protect your messages but also reflect your personal style. From formal correspondences to special occasion greetings, these versatile containers will enhance the presentation and delivery of your written communications.