Choosing a fire pit size is mostly a balance between three things: the space you have, the number of people you usually host, and how often you plan to move the pit. A pit that is too small leaves guests squeezed on one side, while one that is too large can crowd a patio and push the safe zone toward fences, trees and walls.
This guide explains what size fire pit is best for different backyards, using the sizes offered by Wizard Fire Pits, a New Zealand business that sells smokeless fire pits in Mini, Small, Regular and Jumbo sizes, along with accessories and fuel. The principles apply to any wood-burning pit, so treat them as a checklist whichever brand you choose.
Why fire pit size matters
Size affects more than appearance. It changes how much space you need around the fire, how many people can sit comfortably, how much fuel you burn and how easy the pit is to carry and store.
Safety is the most important factor. A larger pit produces a larger fire, taller flames and more radiant heat, and each of those increases the clearance you need from buildings, fences and trees. Choosing a size that fits your yard with room to spare is the simplest way to avoid problems later.
Start with your space
Measure the usable area
Mark the spot where the pit will sit and measure from that point to the nearest wall, fence, hedge or tree. Fire and Emergency New Zealand advises keeping a fire at least three metres from any building, hedge, shelterbelt or other combustible material. With the pit in the middle, that gives you a clear circle about six metres across, and your seating sits inside that circle at a comfortable distance from the flames. checkitsalright
Check the ground surface
Fire pits sit best on level, non-combustible surfaces such as paving, concrete or gravel. Grass can scorch, and wooden decks vary widely in heat resistance. Wizard states that its pits can be used on a wooden deck only with close attention, should never be left unattended while burning, and recommends a heat proof mat for extra protection. All Wizard pits come with foldable legs that lift the pit off the ground, but hot ashes can still reignite and escape, so treat the cooling period as part of the burn.
Look up as well as across
Overhead clearance catches many owners out. Wizard's FAQ recommends at least 5 metres of height clearance from structures and trees for the Regular and Jumbo sizes, and 2 metres for the Mini. Its side clearance figures are 2 metres for Regular and Jumbo and 1 metre for the Mini. A pergola, awning, low branch or covered patio can rule out a larger size even when the ground area looks generous. Because the national three metre guideline applies to buildings and hedges, use whichever figure is larger.
Match the size to your group
Think about your typical evening rather than your biggest party. Most households light a fire for two to six people, and a pit that suits that group will feel right far more often than one chosen for a single large gathering.
As a general planning guide, allow about 60 centimetres of seating width per adult and keep chairs at a comfortable distance from the flames. Heat falls away quickly with distance, so the wider the circle, the cooler the guests at the back will feel. A bigger pit does not automatically mean a warmer evening for everyone.
If you like to lounge near the fire rather than sit upright, include furniture in your measurements. The RollyBed portable day bed measures 190 by 90 by 20 centimetres and is designed for one person lying lengthways, so allow that footprint outside the heat zone and well clear of sparks.
Fire pit sizes compared
Wizard Fire Pits lists four sizes, described by outer diameter. The table below summarises them, with a general guide to the group each size tends to suit.
|
Size |
Outer Diameter |
Weight |
Typical Use |
|---|---|---|---|
|
Mini |
16 cm |
1.9 kg |
Small patios, camping and beach trips, suitable for two to three people |
|
Small |
35 cm |
See product page |
Courtyards and compact yards, suitable for two to four people |
|
Regular |
45 cm |
11 kg |
Average backyards, suitable for four to six people |
|
Jumbo |
64 cm |
20 kg |
Larger yards and gatherings, suitable for six or more people |
Weights for the Mini, Regular and Jumbo come from Wizard's FAQ. The group sizes are general guidance rather than manufacturer ratings.
Mini and Small: compact and portable
The Mini Wizard collection centres on a 16 cm pit that weighs 1.9 kg, which makes it easy to move between a patio, a campsite and the beach. A heat proof mat made for the Mini size is listed alongside it. Its small firebox suits small groups and short evenings.
The Small Wizard collection covers a 35 cm pit that sits between the Mini and the Regular. It gives a larger fire than the Mini while staying compact enough for smaller yards, and the collection also lists a grill, lid and cover made for this size.
Regular: the middle ground
The Regular size has a 45 cm outer diameter and weighs 11 kg. It is the size most backyards can accommodate, and it comes with a wider range of accessories, including a grill, lid, cover, carry bag and heat proof mat. If you are unsure and your yard meets the clearances, this is often the practical starting point.
Jumbo: larger yards and bigger groups
The Jumbo has a 64 cm outer diameter and weighs 20 kg. It produces the largest fire of the four, so it needs the most clearance, and it is less convenient to move. It suits owners with open space, no low overhead structures and regular gatherings of six or more people.
Consider fuel and burn time
A larger firebox holds more fuel, so it burns longer between top-ups, while a Mini needs smaller pieces and more frequent refuelling. Fuel quality matters more than size. Wizard recommends dry, kiln-dried hardwoods such as manuka, gum, oak and wattle, as well as quality macrocarpa, and advises avoiding pine because its resin produces black soot. Compressed hardwood pellets are another option. Wizard's fuel and fire starters collection lists oak hardwood pellets and fire starters.
Plan for warm-up time as well. Wizard notes that a pit takes about 15 to 20 minutes to reach temperature, and that some smoke is normal until the secondary burn begins. Lighting the fire before guests arrive makes the evening more comfortable whichever size you choose.
Think about cooking and accessories
Many owners use their pit for cooking as well as warmth, and that affects which size makes sense. Wizard lists a grill for each of the four sizes, so a cooking surface is available whichever pit you choose. Remember that a grill needs a bed of settled embers rather than tall flames, which means you should allow time for the fire to burn down before you start. A larger grill also has more cooking area but weighs more and takes up more storage space, so match it to how much food you usually prepare.
Accessories add to the footprint too. A lid, cover and heat proof mat all need somewhere to live when the pit is not in use, which is worth considering if storage space is tight.
Portability and storage
If you plan to move the pit between the lawn, the patio and trips away, weight becomes a deciding factor. At 1.9 kg, 11 kg and 20 kg, the Mini, Regular and Jumbo suit quite different habits. Covers and lids protect a pit that lives outdoors, and the removable base plate and ash pan make cleaning simple once the pit has cooled completely.
Common sizing mistakes
- Buying for the biggest party of the year. A pit sized for twelve people can feel oversized on a normal weeknight.
- Ignoring overhead clearance. Trees, eaves and pergolas limit the size you can use safely.
- Forgetting seating space. Chairs and loungers need room around the pit as well as clearance from buildings.
- Overlooking the surface. Decks and lawns need extra protection or a different location.
- Underestimating fuel. A larger pit uses more wood per evening, so allow for storage and supply.
A simple way to decide
- Measure the clear area and confirm at least three metres from buildings, hedges and other combustible material.
- Check the height above the spot for branches, awnings and roofs.
- Count the people you host on a typical evening, not the most you have ever had.
- Decide whether you will move the pit often.
- Choose the size that meets every clearance comfortably and suits your usual group.
Frequently asked questions
What size fire pit is best for a small backyard?
A Mini or Small size usually suits a compact yard because the fire, the heat and the clearance zone are all smaller. Measure the available space first and confirm the clearances for the specific pit before you buy.
How many people can sit around a fire pit?
It depends on the size of the pit and the seating arrangement. As a rough guide, allow about 60 centimetres of seating width per adult, and remember that guests further from the flames will feel less heat.
Is a bigger fire pit always warmer?
A larger fire gives off more heat, but warmth drops quickly with distance, and wind and fuel quality also play a part. A well-built fire in a smaller pit can be more comfortable for a small group than a poorly fuelled large one.
Can I use a fire pit on a deck?
Wizard says its pits can be used on a wooden deck with close attention, never unattended, and recommends a heat proof mat. Decking materials differ in heat resistance, so check the manufacturer's guidance for your deck type.
Do I need a permit for a backyard fire pit?
Requirements depend on the fire season in your area and on council rules. Check the current status before you light, and keep to the safety conditions that apply.
Talk through your space
If you are unsure which size suits your yard, you can contact the Wizard Fire Pits team with your yard measurements and the number of people you usually host.
