What size doormat do you need?
The rule for doormat sizing is pleasantly simple: your mat should be about 80 percent as wide as your door. A standard 90 centimetre front door therefore suits a mat about 72 centimetres wide, while a wider 100 centimetre door suits an 80 centimetre mat. The reason is practical, not decorative. A mat that is much narrower than the door forces visitors to step around it or land half on and half off, which defeats the purpose, since the mat only traps dirt from feet that actually land on it. A mat that is wider than the door looks odd and can catch on the door frame, but a mat at roughly 80 percent looks intentional and works for almost every visitor, including those carrying bags or holding a child's hand.
Depth matters too, though it gets less attention. A mat should be deep enough for two full steps, which usually means 40 to 45 centimetres for a front door, or about 55 percent of the mat's width. Shallow mats of 25 centimetres only catch the first footfall, so dirt travels straight past them into the hall. If your porch is small, choose the widest mat that fits rather than the deepest, since width is what catches both feet side by side. For double doors, size the mat to the full opening, not one leaf, or use two mats side by side with no gap between them, since a gap in the middle is exactly where muddy feet will land.
Measuring your doorway properly
Measure the clear door width, the opening itself, not the frame plus architrave, since the mat sits within that opening's traffic path. Measure at floor level, because some older doors are not perfectly square and the width at the threshold can differ from the width higher up. Then check the space available: the mat must lie flat without curling against a step, a threshold strip, or a door sweep. If the door opens inward over the mat, leave clearance so the door does not drag, catch, or push the mat into a heap every time it opens. A mat that bunches under a door is worse than no mat, since it becomes a trip hazard, especially for older visitors.
| Door width | Recommended mat width | Recommended depth | Best for |
|---|---|---|---|
| 80 cm | 64 cm | 35 cm | Internal doors, flats |
| 90 cm | 72 cm | 40 cm | Standard front door |
| 100 cm | 80 cm | 44 cm | Wide front door |
| 120 cm | 96 cm | 53 cm | Double doors (one leaf) |
| 180 cm | 144 cm | 79 cm | Full double opening |
Materials: coir, rubber, and everything else
Coir, made from coconut husk fibre, is the classic doormat material for a reason: its stiff bristles scrape mud and grit off shoes effectively, and it looks warm and natural at a front door. Its weakness is shedding, since loose fibres come off for the first weeks, and it does not cope well with standing water, so it suits covered porches better than exposed steps. Rubber mats, by contrast, shrug off rain, grip the ground, and last for years in heavy traffic, but they look utilitarian and trap less fine dirt than coir. Rubber-backed coir gives you the best of both: a coir scraping surface with a rubber base that grips, resists moisture from below, and stops the mat sliding across a smooth floor.
Traffic levels and durability
How many feet cross your mat each day decides how tough it needs to be. A quiet household with two adults and no pets can use a natural coir mat and expect it to last a year or more with regular shaking out. A family home with children, dogs, and daily deliveries is a high-traffic entrance, and it needs heavy-duty rubber or a thick rubber-backed coir mat, replaced more often. Commercial entrances, such as shops and offices, need industrial-grade mats and often a two-stage system: a scraper mat outside and an absorbent mat inside. If your mat is flattening, shedding heavily, or sliding around, it is telling you the traffic has outgrown it, not that you bought badly.
Indoor, outdoor, or both?
The most effective entrance uses two mats, not one. An outdoor mat, usually coir or rubber with an open, scraping texture, removes the worst mud and grit before it enters the house. An indoor mat, usually softer and more absorbent, catches remaining moisture and fine dust. Together they can trap up to 80 percent more dirt than either alone, which protects floors and cuts cleaning time. Outdoor mats must handle rain, frost, and sun without rotting or fading, so avoid fabric mats outside and choose rubber or coir with a weatherproof backing. Indoor mats can prioritise looks and softness, since they are sheltered, but they still need a non-slip base on hard floors.
Cleaning and maintaining your mat
A doormat only works if it is maintained, because a mat saturated with dirt cannot trap more. Shake outdoor mats outside at least weekly, more often in wet or muddy seasons, and beat them against a wall to dislodge grit from deep in the fibres. Vacuum indoor mats weekly and spot-clean stains promptly, since ground-in dirt shortens their life. Coir mats can be hosed down and dried flat in the sun, but never put a rubber-backed mat in a hot dryer, since the backing can crack. Replace a mat when the fibres are flat, the backing is cracked, or it no longer lies flat, since a curled edge is a trip hazard that no amount of cleaning fixes.
Style: making a practical mat look good
A doormat is the first thing visitors see, so it is worth choosing one that suits your home's style as well as its traffic. Natural coir suits traditional and cottage homes, while a plain charcoal rubber mat suits modern entrances. Patterned and printed mats can add personality, but remember that heavy printing can clog the scraping texture and reduce effectiveness, so favour texture over pictures for the outdoor mat and save the decorative mat for indoors. A layered look, a larger flat weave rug under a smaller coir mat, is popular and practical, since the outer layer catches overspill and the whole arrangement looks considered rather than improvised.
Special cases: pets, wheelchairs, and thresholds
Homes with dogs benefit from a longer, deeper mat, since paws carry more mud than shoes and dogs will not wipe their feet on request. Place the mat so the dog must cross its full depth, not just clip a corner, and consider a washable indoor runner beyond it. For wheelchair and pushchair users, a low-profile mat with bevelled edges is essential, since a thick, raised mat is a barrier, not a help, and loose mats can catch small wheels. At thresholds with a step, make sure the mat does not reduce the step's usable depth or create a lip that catches toes. Safety always beats style at an entrance.
Apartment and flat entrances
Flat entrances often have tight space and communal corridors, so measure carefully and check any building rules about mats in shared hallways, since some landlords restrict them for fire-escape reasons. A slim, low-profile mat that fits entirely within your doorway recess is usually acceptable, while a mat that spills into the corridor may be removed. If space is very tight, a narrow but deep mat that catches two steps in a small footprint works better than a wide mat that must be folded or cut.
When to replace your doormat
Even a good mat wears out. Outdoor coir mats in heavy traffic may last six to twelve months, while rubber mats can last several years. Signs it is time include flattened fibres that no longer spring back, a backing that cracks or curls, persistent odour despite cleaning, and visible thinning in the centre where feet land most. Replacing a worn mat is cheap compared with refinishing a scratched floor or replacing a stained carpet, so treat the mat as a consumable, not a permanent fixture, and keep a spare for muddy season.
- Size the mat to about 80 percent of door width.
- Allow 40 to 45 cm depth for two full steps.
- Use a scraper outside and an absorbent mat inside.
- Match material to traffic: coir for light, rubber for heavy.
- Keep mats flat, clean, and free of curled edges.
A well-sized doormat is a small purchase that protects your floors every day. Measure your door, pick a material that matches your traffic, and use the calculator above to get a width and depth that catch both feet, not just one.