A very common and understandable question for those who might’ve moved house, had children or have decided to decorate for Christmas for the first time is: "What size Christmas tree do I need?"

It's not as simple as choosing a Christmas tree height that reaches the ceiling, as there are a few other things to bear in mind, but it’s a fairly easy question to answer.

Here are just a few tips on choosing the right size Christmas tree, to make the best use of the space you have available in your home or garden.

1. Start with the height

Choosing the right height Christmas tree is an obvious place to start, so measure from floor to ceiling if you're choosing an indoor Christmas tree, and make sure you get one that will fit and, and more importantly, also allows for your decorations on top of the tree.

Buying a Christmas tree that's too tall is one of the most common pitfalls, especially if you've just moved into a new-build property where ceilings are often a bit lower than in Victorian-era houses.

Equally, you might be surprised by how high your ceilings actually are, even in a mid-terrace or apartment, so it's worth checking as Christmas trees are sold by height more than by any other measure.

2. Remember the width

The width of a Christmas tree also takes a lot of people by surprise, so think about where it will go in your room and how much space it will need.

As a rough guide, a 6.5ft Christmas tree has a diameter of about 4.5ft and a 7.5ft Christmas tree can measure over 5ft across, and of course they're widest at the bottom.

If you're decorating an indoor space with high ceilings but a small room, consider slim Christmas trees which take a few inches off the widest diameter, but still look great.

3. Space for decorations

Leave a little room for decorations. They usually won't extend beyond the widest diameter of the tree, but it's good to give them some 'room to breathe'.

This makes sure you can decorate your tree from all sides, especially if it's going to stand in front of a window.

It also means you're less likely to knock any decorations off as you brush past your tree, and should allow it to look at its very best in rooms and gardens large and small.

4. From the stand to the star

When making your measurements, remember to take into account the full height of the tree, including its stand and skirt, all the way to the very top.

If you want to put a fairy, angel, star or any other creation on top, you'll need to leave some room for this between the top of your tree and the ceiling.

Many trees include a branch at the very top to attach your Christmas tree topper to, in which case you might find a 6.5ft Christmas tree fits a 7ft ceiling height, a 7.5ft Christmas tree suits an 8ft room, and so on.

5. Unlit vs. prelit Christmas trees

Finally, consider getting prelit Christmas trees, which can be used indoors and are not just for gardens.

They're faster to put up, as you only need to plug them in or fit batteries, and they should be ready to switch on immediately.

But they're also much easier in confined spaces, where it can be hard to move around the tree to string up fairy lights - so if you're decorating a smaller room, a slim prelit Christmas tree could be the best way to go for a stress-free run-up to Christmas!