How to build a Kotatsu: Brilliant American-Style Coffee Table

What's a kotatsu table?

Are you intrigued by the Japanese culture? Intrigued by the cozy image of a kotatsu table, a traditional Japanese heated table, that has caught your eye?

Well, you can create such a warm and inviting space in your own home, with a DIY kotatsu table!

My husband and I just finished setting up our DIY Kotatsu table. 

This guide breaks down the process into simple steps that anyone can effortlessly follow.

And guess what? We’ve got you covered with frequently asked questions at the end. Let’s get started!

What is a Kotatsu Table?

Before we begin with the DIY recipe, let’s quickly discuss what a Kotatsu Table is.

A Glimpse into Japanese Homes

Kotatsu table

The kotatsu table is a staple in traditional Japanese homes and has been since the Muromachi period in the 14th century.

Imagine a low table, equipped with a built-in heater, and covered with a thick blanket.

This heated table is a central feature of family life during the colder months, offering a much-needed source of warmth.

Kotatsu in Modern Times

In modern times, the kotatsu table has evolved, seamlessly integrating with contemporary home decor.

The traditional kotatsu has been replaced with modern kotatsu tables that can easily be included in modern homes, small apartments, or even tiny homes.

Making Sense of the Kotatsu Components

Understanding a kotatsu table involves getting familiar with its parts such as the kotatsu heater, the heavy blanket, and the wooden table frame.

Our DIY Homemade Kotatsu Table

Have you ever seen a kotatsu table in any Japanese anime or movie?

snacking tangerines under the kotatsu table

I’ve always been curious about what it’s like to sip tea and snack on tangerines (you know, like in those movies!) on a chilly winter day.

But we couldn’t try one for the past 10 years because we were living in hot states like Las Vegas and Texas!

Finally, we moved to New England and now we’re facing a long winter, so my husband and I decided to make one before winter arrives!

But here’s the thing, we wanted to make our table have that American-style vibe.

our diy kotatsu table in the living room
The homemade Kotatsu table that we crafted and placed in our living room.

Something that would seamlessly fit into our living room design and be super comfy to use. I mean, let’s be real, even my 6′ 5″ husband wouldn’t want to sit on the floor (and neither would I!).

So, we ended up going for a dining table style coffee table, the kind that’s at dining table height. Perfect for our living room setup!

My husband looks so happy with his diy kotatsu table
My husband Tony is loving his DIY kotatsu table in our living room. It’s such a cozy addition to our space!

Long story short, we are totally obsessed with our table!

We use it every single day for cold weather, and even our dog Oreo is a huge fan – she’s always snoozing under it! 🤣

My dog Oreo is sleeping under the kotatsu table
Our dog, Oreo, is just snoozing away under the kotatsu table in our living room.

Not only does it keep our legs toasty, but it’s also an energy-saving champ compared to heating up the whole room.

Cons? Well, let’s just say this table has the power to turn anyone into a certified couch potato! Getting up? No way! 😄

How to build a Kotatsu: DIY American-style Kotatsu Coffee Table

Wanna dive into the art of crafting your own DIY kotatsu table?

Let’s unleash your creativity and build a cozy haven that screams warmth and comfort.

Ready for this exciting journey? Let’s do it!

Step 1: Gathering Your Materials

First things first, let’s gather all the necessary materials. You will need:

A table of your choice

If you’re all about the DIY life, you could totally build your own table. 

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You can choose any table you like as long as it’s sturdy and DIY-friendly (can drill in the bracket) and has enough space for your legs to comfortably fit underneath.

This will be the base of your kotatsu, so choose wisely!

But for us, we decided to take the easy route and bought a solid wooden table with foldable legs.

It’s perfect for small spaces or as a card game table that you can easily store away when not in use. 

I specifically chose this table so we can use it during winter and stash it away during summer.

And let me tell you, I was pleasantly surprised by the quality and affordability.

Plus, it comes in different colors and I went with the Oak finish. 

Foldable Wooden Table - Fruitwood
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Foldable Wooden Table - Espresso
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A Large Blanket: 

The next item you’ll need is a large blanket that will cover your entire table.

You can choose any color or design you like, but I highly suggest getting a large and warm one for maximum coziness. 

You can use a traditional Japanese futon or even just a regular comforter.

The important thing is that it should be big enough to drape over the edges of your table and reach the floor on all sides.

This will trap the heat inside and create a cozy cocoon.

For our kotatsu, we chose a large, soft blanket in a neutral color so it can easily match any interior design.

Plus, it’s easy to wash and maintain, which is always a plus when you’re using something frequently.

A New Kotatsu Heater

Now, onto the most essential part of a kotatsu – the heater.

Traditionally, a charcoal burners are used to heat the underside of the table, but nowadays electric heaters are more commonly used for convenience and safety reasons.

When choosing a new kotatsu heater, make sure to consider the size of your table and how much heat output you need.

You also want to look for heaters with automatic shut-off features in case they overheat. 

I picked this heater because it has great reviews and the seller mentioned that we don’t need a voltage converter.

It’s a small space heater, but it works really well, especially when we use a large blanket to cover the table!

General DIY materials and tools 

Apart from those two key components, you will also need some general DIY materials and tool to put together your own kotatsu.

It totally depends on how you would set up your table.

For examples: a saw, measuring tape, drill, screws, sandpaper, wood glue, and more. 

Step 2: Make a wooden frame for the kotatsu heater

Alright, so when you’re building your own kotatsu table, the next step is to make a wooden frame for the kotatsu heater.

Build a wooden frame for the kotatsu heater

Is there another way to install the heater without having to build a wooden frame?

You have a couple of options for installing the kotatsu heater to your table:

A. You can follow the instructions and build a wooden frame around the heater.

B. Or, if you prefer a simpler approach, you can just use brackets to install it.

Choose the method that works best for you!

So here’s how we built our kotatsu table: 

We chose option A.

The heater we bought only came with instructions in Japanese, so we had to rely on a photo translator software to figure out the steps.

Automatically translated instruction from Japanese to English

As you can see, the instructions weren’t great, but my husband totally rocked it like a boss!

Do you wanna learn about option B (using brackets)?

If you don’t feel like building the wooden frame yourself or if you don’t have enough tools for it, no worries! There’s actually another way to install the heater!

Some people simply just use metal brackets to install the heater!

Step 3: Installing the Heater

Install the heater under the table

Next, you need to install the heater. The heating unit usually used is an electric heater, but some people also use small space heaters or halogen heaters.

Make sure the heater is securely attached to the underside of the table.

Step 4: Adding the Blanket

The final step is to cover the table with a large, comfortable blanket. This blanket traps the heat from the kotatsu heater, keeping you warm and toasty.

Make sure you get a blanket that’s big enough to cover the whole table and doesn’t let warm air leak out! 

So I bought this massive blanket and guess what? It fits perfectly on our table! It’s super soft, cozy, and really pretty!

Step 5: Adding a table top

Kotatsu table top

If you want to use your kotatsu table for both warmth and work, you might want to think about adding a table top that can be easily removed when needed. 

We just bought a half inch thick plywood from Home Depot and cut it to about 34″ x 34″, which is a little bigger than the wooden table we bought. 

our diy kotatsu table in the living room

We’ll probably stain the table eventually, but for now, this setup works just fine for us.

Step 6: Making it safe

It’s important to make sure your DIY kotatsu table is safe.

Make sure all electrical components are properly installed and secured, and the blanket is made of fire-resistant materials.

Here’s a pro tip

Consider setting up a smart plug, smart power strip, or ones with timers.

It’s a great way to ensure you can easily turn off your heater remotely or have control over the running time. Stay safe and cozy!

So, I bought this smart plug and let me tell you, it’s super affordable and works like a charm!

I just set it up using a smart home app, so now I can easily turn it on and off with my phone. Pretty cool, right?

Are you someone who loves being at home? Well, then you definitely need to check out our other posts to take your home living experience to the next level! We’ve got everything from awesome DIY projects and decor tips to mouthwatering recipes and self-care routines. At Homebody Living, we’ve got you covered!

What do you need to consider before getting a Kotatsu table?

Enhance Your Interior Design with a Kotatsu Table

What's a kotatsu table?

Ensure that the design of the kotatsu table seamlessly blends with your interior design by planning it carefully.

Consider the materials and colors used, as well as the size and shape of the table.

The dimensions of the kotatsu table and other accompanying furniture

Make sure to measure the space where you plan on placing your kotatsu table.

You don’t want to end up with a table that is too big or too small for your room.

Size of the kotatsu table is important

For instance, it can be quite uncomfortable if the table is either too low or too tall for your couch.

And remember, the heater will need some space as well, so factor that into your measurements.

Make sure to choose the correct size of blanket

Make sure you have a large blanket that is big enough to trap hot air underneath it.

This is what makes the kotatsu so cozy and warm.

If your blanket is too small, it won’t be able to fully cover the table and keep the heat inside.

The blanket size matters

On the other hand, if your blanket is too big, it can create a tripping hazard as it drapes onto the floor.

Building a kotatsu table might seem challenging at first, but with this guide, you’ll find it’s much easier than it seems.

So, why wait more? Start enjoying the comfort and joy of having your own kotatsu table today!

Frequently Asked Questions about Kotatsu Table

Table of Contents
  1. How does a Kotatsu Table work?
  2. How to maintain a Kotatsu Table?
  3. Can you just buy a Kotatsu table instead of trying to DIY it? 
  4. What size blanket should I use for my Kotatsu Table?
  5. How do I store my Kotatsu Table when not in use? 
  6. Can you put drinks or food on a Kotatsu Table? 
  7. What type of heater should I use with my Kotatsu Table? 
  8. Is it safe to sleep under a Kotatsu Table?
  9. How do I clean and maintain my Kotatsu Table?
  10. Can I use a Kotatsu Table outdoors?
  11. What types of materials are kotatsu tables made from?
  12. How do I know what size kotatsu table to buy?
  13. Are there any safety precautions I should take when using a kotatsu table?
  14. Do I need additional furniture to use with my kotatsu table?
  15. Where to buy a Kotatsu Table? 
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How does a Kotatsu Table work?

A kotatsu table works by using an electric heater or a heating element attached to the underside of the table.

This heat source warms up the space under the blanket, providing a cozy space for you to relax.

How to maintain a Kotatsu Table?

Maintaining your kotatsu table involves regular cleaning of the table, blanket, and heater.

The table and blanket can be cleaned with a damp cloth, while the heater should be cleaned according to the manufacturer’s instructions.

Can you just buy a Kotatsu table instead of trying to DIY it? 

Yes, you can purchase a ready-made kotatsu table instead of trying to make one yourself.

There are many options available in the market, ranging from traditional Japanese-style tables to modern designs.

What size blanket should I use for my Kotatsu Table?

It is recommended to use a blanket that is at least 4-5 inches larger than the dimensions of your table.

This will ensure that the entire tabletop and legs are covered, providing maximum heat retention.

How do I store my Kotatsu Table when not in use? 

When not in use, it is best to disassemble the kotatsu table and store it in a dry place.

Make sure to clean and dry all components thoroughly before storing them away.

Can you put drinks or food on a Kotatsu Table? 

Sure, you can totally put drinks and food on a kotatsu table, just like any other regular wooden table!

However, it is important to use coasters or placemats to protect the wood surface from any potential damage.

What type of heater should I use with my Kotatsu Table? 

It is recommended to use an electric heater specifically designed for kotatsu tables.

These heaters are typically low wattage and have safety features such as automatic shut-off in case of overheating.

Is it safe to sleep under a Kotatsu Table?

No, it is not safe to sleep under a kotatsu table.

The heating element can cause burns if left on for extended periods of time and there is also a risk of suffocation due to limited air circulation.

How do I clean and maintain my Kotatsu Table?

To clean your kotatsu table, wipe it down with a damp cloth and mild soap.

Avoid using harsh chemicals or abrasive cleaners as they can damage the wood finish.

It is also important to regularly check and replace any worn or damaged parts such as the heater or cord to ensure safe operation.

Can I use a Kotatsu Table outdoors?

No, kotatsu tables are not designed for outdoor use as exposure to elements such as rain, sun, and extreme temperatures can cause damage to the wood and electrical components.

What types of materials are kotatsu tables made from?

Kotatsu tables are typically made from wood such as oak, pine, or cedar.

The top surface may have a laminate coating for easy cleaning and heat resistance.

Some tables may also have a metal or plastic frame for added stability.

How do I know what size kotatsu table to buy?

The size of your kotatsu table will depend on the available space in your room and how many people you want to accommodate. Standard sizes range from small (30″ x 30″) to large (47″ x 35″).

Measure your space carefully and consider the number of chairs that will fit comfortably around the table before making your purchase.

Are there any safety precautions I should take when using a kotatsu table?

Yes, it is important to follow some safety precautions when using a kotatsu table.

Always make sure to unplug the power cord when not in use, avoid placing flammable items near the heating source, and never leave the table unattended while in use.

It is also recommended to regularly check the condition of your table and replace any worn or damaged parts for optimal safety.

Do I need additional furniture to use with my kotatsu table?

No, a kotatsu table can be used on its own without any additional furniture.

However, if you want to elevate the height of your table or add extra comfort, you can use cushions or low seating furniture such as floor chairs or zabutons (Japanese cushions).

Where to buy a Kotatsu Table? 

You can buy all the components of a kotatsu table from online stores.

Some people prefer to buy a complete kotatsu set, while others choose to DIY their own kotatsu table.

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