How to Make a Kotatsu Table (DIY)

Imagine a cozy winter afternoon. You’re tucked under a warm blanket, sipping tea, legs toasty beneath a glowing table.

That’s the magic of a kotatsu — a traditional Japanese heated table that brings warmth, comfort, and closeness into your home.

The good news? You can make one yourself, with just a few simple materials.

Here’s a gentle step-by-step guide to creating your own DIY kotatsu table 🛠️🧣

A diagram comparing a kotatsu table and an electric heater.

🔧 1. Understand the Kotatsu Basics

A kotatsu is made of three parts:

  • A low wooden table frame
  • A heat source underneath
  • A thick blanket (called a futon) placed between the tabletop and the frame

You sit on the floor, tuck your legs under the blanket, and let the warmth rise from below.

Tip: It’s less about perfection, more about creating a cozy space that feels good.


🪑 2. Choose or Build a Low Table

Look for a coffee table or low dining table with enough space underneath for your legs and a heating unit.

Ideal height: 35–45 cm (13–18 inches)
Frame: Wood is traditional, but any sturdy table will work.

DIY option: You can build a simple frame with wooden planks and L-brackets. Leave enough space under the table to sit cross-legged comfortably.


🔥 3. Add a Safe Heat Source

Japanese kotatsu use a built-in electric heater designed for tables.
But you can DIY it with care:

  • Use a low-wattage infrared heater or electric foot warmer
  • Secure it safely under the tabletop (use brackets or a metal frame)
  • Important: Make sure it’s ventilated, stable, and has a safety shut-off

Alternative: Use a heated blanket underneath or a portable panel heater beside the table for a lower-risk version.


🧺 4. Find a Thick Blanket or Futon

You’ll want a soft, heavy blanket that traps heat but still feels breathable.

Look for:

  • A thick quilt, duvet, or comforter
  • Size: large enough to cover the table and hang over the sides (at least 30 cm all around)
  • Soft fabric like fleece, cotton, or microfiber

Optional: Add a second layer — a decorative top cloth for extra warmth and style.


🔨 5. Secure the Tabletop

Once the blanket is laid over the frame, place the tabletop back on top.
It should sit on top of the blanket, holding it in place.

If you’re using a ready-made table, remove and replace the top as needed.
For DIY frames, consider adding removable wooden slats or a lightweight panel.


🪞 6. Style Your Kotatsu Corner

Add floor cushions (zabuton), soft rugs, or even a tatami mat underneath.

Keep tea nearby, a good book, and maybe a sleepy cat.

Tip: String up soft fairy lights or candles nearby for extra magic.


🌬️ 7. Safety and Warmth Tips

  • Never leave the heat source on unattended
  • Unplug the unit when not in use
  • Keep flammable items away from the heater
  • Check for signs of overheating

It’s all about cozy comfort — safely.


☕ A Sanctuary for Slow Days

A kotatsu isn’t just a warm table.
It’s an invitation to slow down. To gather. To rest deeply.

In winter especially, it becomes a gentle center of the home — where meals are shared, games played, and naps taken.

And when you make it yourself, it holds even more warmth.