How to Fold a Paper Boat: Easy Step-by-Step Guide

What You’ll Need

One rectangular sheet of paper (standard letter size, A4, or any rectangle).
A flat, clean surface to fold on.
Optional: a waterproof coating (like wax or clear tape) if you want it to float longer.

Step-by-Step

Start with the paper landscape. Place the rectangle on your table with the short sides at the left and right, and the long sides at the top and bottom. If your paper has a printed side, put it face down so the folds hide it.
Fold in half horizontally. Bring the top edge down to meet the bottom edge, crease well, and unfold. You should have a center crease running left to right.
Fold in half vertically. Bring the left edge to the right edge, crease, and unfold. Now you have a cross-shaped crease.
Fold the top corners to the center. Take the top-left corner and fold it down to the center point where the two creases meet. Do the same with the top-right corner. The two triangles should meet at the center, leaving a strip of paper at the bottom.
Fold up the bottom flaps. Take the bottom edge of the paper (the strip below the triangles) and fold it up over the triangles. Flip the paper over and do the same with the other bottom flap. You now have a triangle shape with a pocket at the bottom.
Open the bottom and flatten. Hold the triangle with the open pocket facing down. Place your thumbs inside the pocket and gently pull the sides apart, flattening the bottom into a diamond shape. The open edges should meet along the center line.
Fold the bottom corners up. Take the bottom corner of the diamond (the one closest to you) and fold it up to meet the top corner. Flip the paper over and do the same with the other bottom corner. You now have a smaller triangle.
Open the bottom and pull the sides. Hold the triangle with the open pocket facing down again. Put your thumbs inside and gently pull the sides outward. As you pull, the paper will open into a boat shape. Flatten the bottom and adjust the sides so they stand up. Your paper boat is ready!

Common Mistakes

Not creasing firmly: If you don’t press hard enough on your folds, the paper will spring back and the boat will be floppy.
Skipping the initial creases: The cross-shaped crease in steps 2 and 3 is essential for finding the center. Skipping it makes the corner folds uneven.
Folding the corners too far: The top corners must meet exactly at the center. If they overlap or leave a gap, the bottom flaps won’t align properly.
Rushing the final pull: Pulling the sides too quickly or too hard can tear the paper. Go slowly and gently.

Tips

Use paper that is not too thick. Standard printer paper works well. Heavier paper like cardstock is harder to fold and may crack.
Make sure your paper is a true rectangle. If it’s slightly skewed, the boat will be lopsided.
After each fold, run your fingernail or a flat tool along the crease to make it sharp.
If you want the boat to float longer, coat it with a thin layer of wax (rub a candle on it) or cover the bottom with clear tape.
For a bigger boat, use a larger sheet of paper. The proportions stay the same.

Troubleshooting

The boat won’t stay open: If the sides keep collapsing, the creases are probably not sharp enough. Refold the final creases with more pressure.
The boat is lopsided: This happens when the corner folds are not even. Unfold and redo steps 4 and 5, making sure both corners meet exactly at the center.
The paper tears during the final pull: You are pulling too hard or the paper is too thin. Use a fresh sheet, and pull very gently, easing the sides open bit by bit.
The boat sinks quickly: Paper is absorbent. For a longer float, use waxed paper, or coat the bottom with clear nail polish (but let it dry completely before floating).
The boat flips over: This is often because the bottom is not flat. Press the bottom down firmly on a table before placing it in water.

Frequently Asked Questions

What size paper should I use?

Any rectangular paper works. Standard letter size (8.5 x 11 inches) or A4 is ideal. The larger the paper, the larger the boat.

Can I use origami paper?

Yes, but origami paper is square. You’ll need to cut it into a rectangle first, or use a square and fold it in half to make a rectangle before starting.

How do I make the boat float better?

Make sure the bottom is flat and the sides are even. You can also add a small weight (like a paperclip) inside the bottom to lower the center of gravity, but be careful not to overload it.

Why does my boat always come out crooked?

This is almost always due to uneven corner folds. Take your time in step 4 to align the corners exactly at the center point. Also, make sure your initial rectangle is not skewed.

Can I decorate the boat?

Absolutely. You can draw on it before folding, or use stickers. Just be aware that heavy decorations might make it sink faster.

How long will the boat last in water?

Without any waterproofing, a paper boat will usually float for a few minutes before it becomes too soggy. With wax or tape, it can last much longer, but eventually, water will seep in.

Sources: Origami Club. Menus and buttons can differ slightly by version. Spotted something out of date? Tell us.