The kitchen work triangle: what it is and when to bend it
Quick answer: The work triangle links the three places you use most: the sink, the cooking surface and the refrigerator. Each leg should be 4 to 9 ft and the three together 26 ft or less, measured from the center front of each one. It is a good test for one cook in an L, U or galley kitchen; a one-wall kitchen has none, and two cooks or a very large room are good reasons to bend it.
Where the triangle comes from
The idea dates from the middle of the last century, when most kitchens had one cook and three big pieces: a sink, a stove and a refrigerator. Keep those three close, and cooking is not a walk. Keep them far enough apart, and there is counter between them to work on. The numbers still hold up for one cook, and the National Kitchen & Bath Association (NKBA) still includes the triangle in its kitchen planning guidelines.
In short, the guidelines say:
- Each leg is 4 to 9 ft.
- The three legs together are 26 ft or less.
- Each leg runs from the center front of the sink, the cooking surface and the refrigerator.
- No major traffic path should run through the triangle.
- No leg should cut through an island or a peninsula by more than 12 in.
How to measure it
- Find the center of the front of each piece: the middle of the sink's front edge, the middle of the range or cooktop front, and the middle of the refrigerator doors.
- Measure straight lines between the three points, as the crow flies.
- Check each leg against 4 to 9 ft, which is 48 to 108 in, then add the three and compare the total with 26 ft, or 312 in.
Use the full-height refrigerator. Refrigerator drawers under the counter and a beverage cooler do not count. If you have two sinks, measure from the one you prep and rinse at.
A worked example
Here is an L-shaped kitchen with an island. The sink is in the island, the range is on the back wall, and the refrigerator stands at the far end of the long wall.
| Leg | Measured | Guideline | Result |
|---|---|---|---|
| Sink to range | 5′ 6″ | 4′ to 9′ | Fine |
| Range to refrigerator | 11′ | 4′ to 9′ | Too long |
| Refrigerator to sink | 7′ | 4′ to 9′ | Fine |
| Total | 23′ 6″ | 26′ or less | Fine |
The total passes, but one leg fails. The triangle is long and thin: two pieces sit close together and the third is stranded. Swap the refrigerator with the 24 in pantry cabinet beside it, and that leg gets up to 2 ft shorter, to about 9 ft. A total under 26 ft does not excuse a refrigerator at the far end of the room.
When to bend it
One-wall kitchens
A one-wall kitchen has no triangle, so do not force one. Put the sink near the middle, the refrigerator at one end and the range toward the other, and give each its landing space: 24 in and 18 in beside the sink, 15 in and 12 in beside the range, and 15 in beside the refrigerator. Landing space does the job the triangle would have done; see how much counter you need.
Galleys where the sink faces the range
In a galley with a 42 in aisle, a sink directly across from the range is only 3.5 ft away. That leg is under 4 ft, and two people end up standing back to back. Slide one of them 2 ft along its run, and the leg grows to just over 4 ft, with the two work spots offset instead of facing each other.
Two cooks
The triangle assumes one cook. With two, give each person a triangle or a zone. A prep sink in the island gives the second cook a short triangle of their own with the range and the refrigerator. The two triangles can share a leg, but try not to let them cross, and widen the work aisles to 48 in. Our guide to kitchen aisle width has the details.
Large kitchens
In a big room, legs pass 9 ft and the total climbs past 26 ft. Rather than spreading the work across the room, gather the sink, the range and the refrigerator at one end, and let the rest hold a pantry, storage or a coffee and drinks area. Put the refrigerator at the edge of the work area, where others can reach it without walking through the cook's space.
Islands
An island can shorten the triangle when it holds the sink or the cooktop, or it can block it. This is where the 12 in rule matters: if a leg cuts across the corner of an island by more than 12 in, every trip becomes a walk around the island. Our island size guide covers the aisles an island needs.
Extra appliances
A wall oven, a microwave, a second refrigerator or freezer column and a beverage center are not part of the triangle. Place them outside it, close to where they are used, so a second person can reach them without crossing the cook's path. A wall oven still wants 15 in of counter beside it, or a counter no more than 48 in across from it.
What matters more than the triangle
The triangle is a quick test, and a kitchen can pass it and still work badly. Check these too:
- Landing space beside the sink, the range, the refrigerator and the oven.
- Aisles: 42 in for one cook, 48 in for two.
- Traffic: the path to the back door, the pantry or the family room should pass the triangle, not run through it.
- Storage where it is used: dishes near the dishwasher, pots and spices near the range, knives and boards near the prep counter.
Many designers now plan in zones (prep, cooking, cleanup and storage) and use the triangle as a check rather than as the starting point. Either way it is a guideline, not code: your local building code and the appliance makers' instructions come first.
To test your own layout, place a sink, a range and a refrigerator in the free OpalSketch 3D designer. The plan notes measure the three legs from the center front of each piece, as the planning guidelines page describes, and point out any leg outside 4 to 9 ft or a total over 26 ft. A one-wall kitchen gets no triangle note.
Questions people ask
Does the work triangle still matter?
Yes, as a check. It catches layouts where one piece is stranded or all three are crammed together. It is one guideline among several, not a rule every kitchen has to pass.
What if one leg is under 4 ft?
The pieces are crowded and there is little counter between them. Slide one along its run, or turn the layout so they are not directly across from each other.
Does an island sink count in the triangle?
Yes, if it is the sink you use most. Measure from the center of its front, and check that no leg cuts across the island by more than 12 in.
Does the triangle apply to a one-wall kitchen?
No. With everything on one wall there is no triangle. Plan the order along the wall and the landing space beside each piece instead.