Short answer: Measure the opening, not your old fridge. Take the width, height and depth in a few spots and use the smallest number. Leave air around the fridge (most makers want about an inch behind it, plus a little at the sides and top), make sure the doors can open all the way, and then measure every doorway, hallway and stair turn between the curb and your kitchen.
Ten minutes with a tape measure is the cheapest part of buying a fridge. Skip it and you can end up with a beautiful new refrigerator in the hallway that won’t go any further. Here’s how we’d do it, step by step.
What you need
A tape measure, a pencil, your phone and, if you can, a second person to hold the other end. Write every number down as you go. Snap a photo of the opening too. It helps more than you’d think when you’re comparing spec sheets later.
Step 1: Measure the opening
Consumer Reports and LG give the same advice here. Measure the space in several places, not once, because floors aren’t level and walls aren’t straight. Then use the smallest number you got.
Width
Measure wall to cabinet, or cabinet to cabinet, at the top, the middle and near the floor. Baseboards and trim steal space down low, so don’t skip that last one.
Height
Measure from the floor to the bottom of the cabinet above, on the left and the right. If the floor slopes, the two numbers won’t match. Go with the shorter one.
Depth
Measure from the back wall to the front edge of the counter. Then look behind the old fridge. A water valve or an outlet sticking out of the wall eats into that depth, and the new fridge can’t sit on top of it.
Depth is also where people get surprised. Consumer Reports notes some refrigerators stick out as much as 10 inches past the cabinets. If you want it closer to flush, ask us about counter-depth models. They give up some space inside for the cleaner look.
Step 2: Leave room to breathe
A fridge pushes heat out as it runs, so it needs a little air around it. The back also has to fit the plug and the water line without crushing them.
The exact gap is different from brand to brand, which is why we always pull up the install guide before we call something a fit. Here’s what a few of them publish:
| Source | Sides | Top | Back | Notes |
|---|---|---|---|---|
| Samsung | 3/8 in each side | 3/8 in | 1 in | 2.5 in on the side next to a wall so the door can open |
| GE Appliances | About 2 in on the hinge side | 1 in | 1 in | No room for that? Pull the fridge forward a bit |
| LG | Subtract 2 in from the width | 1 in | 1 in | Some LG models need as little as 0.16 in at the sides |
| Consumer Reports | 1 in each side | 1 in | 1 in | General rule for any brand |
From each maker’s own U.S. support or buying guide pages and the Consumer Reports refrigerator buying guide, as of November 2026. Your model’s install guide is what counts.
So a 36-inch fridge in a 36-inch hole is usually a problem, not a fit. That’s the mistake we’d most like you to avoid.
Step 3: Check the door swing
Getting the box in the hole is half of it. The doors have to open, and open wide enough to be useful.
If one side of the fridge sits against a wall, that’s the side to watch. Samsung says to leave at least 2.5 inches on the side next to a wall so the door can open, and GE Appliances suggests about 2 inches on the hinge side. On a French-door fridge, the doors usually need to swing past straight out before the crisper drawers will slide out, so a fridge jammed into a corner can leave you with drawers you can’t pull.
Look in front, too. An island, a dishwasher door or a walkway can block a big door. GE Appliances points out that French-door and side-by-side models need less room to swing open, since each door is narrower. That’s a good reason to pick one if your kitchen is tight.
Step 4: Measure the way in
This is the step people forget. Walk the path the fridge will take, from the front door (or the building entrance) all the way to the kitchen, and measure:
- Every doorway, from jamb to jamb
- Hallways, especially where they turn
- Stairs, including the height at the turn and any low ceiling or light fixture
- The elevator door and the inside of the car, if you’re in an apartment building
Then compare those numbers to the fridge’s depth without the doors and handles, because it usually goes through a doorway on its side or turned at an angle. GE’s spec drawings list the case depth without the handle for exactly this reason. If it’s tight, the doors can often come off and go back on in the kitchen. The owner’s manual shows how.
In the city, also ask your building if there are delivery hours or elevator rules. Better to know before the truck shows up.
Step 5: Read the spec sheet the right way
Most fridges on our site have the spec sheet and install guide right on the product page, under Documents. A few things to check there.
Height is usually measured to the top of the hinge, not the cabinet. Depth is listed a few ways (with doors, without doors, and sometimes with the doors open). Use the right one for each job. Width is easy, but remember the gap from Step 2.
Common widths, per Consumer Reports, are 24, 28, 30, 33 and 36 inches, with 36 the most common full size. Built-ins go up to 42 and 48 inches.
Our checklist before you buy
- Measure the opening’s width, height and depth in three spots each, and keep the smallest numbers.
- Look behind the old fridge for the water valve and outlet, and check the depth they leave you.
- Subtract the clearance from your model’s install guide on the sides, top and back.
- Check the door swing against walls, islands and other doors. Tight corner? A French-door or side-by-side model helps.
- Measure every doorway, hallway, stair turn and elevator on the way in.
- Compare those to the fridge’s depth without doors and handles.
- Pick your size, then your style. Compare bottom-freezer, top-freezer, column or undercounter. Then check our guide to the most reliable refrigerator brands.
Frequently asked questions
How much space do you need around a refrigerator?
It depends on the brand and model. Samsung asks for 1 inch behind and 3/8 inch on the sides and top, GE Appliances says at least 1 inch at the top and back, and Consumer Reports suggests about 1 inch all around. The install guide for your exact model is the one to follow.
Will a 36-inch refrigerator fit in a 36-inch opening?
Usually not comfortably. Most fridges need a little air on each side, and walls and cabinets are rarely perfectly square. Check the side clearance in the install guide and compare it to the narrowest width you measured.
Should I measure the old fridge or the space?
Measure the space. Consumer Reports and LG both say to measure the opening itself in several spots and work from the smallest number. Your old fridge might have been squeezed in or might have had extra room you never noticed.
How do I know if a fridge will fit through my door?
Measure every doorway on the way in from jamb to jamb, and compare it to the fridge’s depth without the doors and handles, since it can usually be carried in sideways. If it’s close, the doors can often come off. The owner’s manual explains how.
Does a refrigerator need space behind it?
Yes. The back is where the water line, the plug and the airflow go. Samsung and GE both list at least 1 inch, and Consumer Reports says the same.
What are standard refrigerator widths?
Consumer Reports lists 36 inches as standard, with 24, 28, 30 and 33 inches also common. Built-ins come in 42 and 48 inches.
Want us to check the fit for you?
Checking fit is part of what we do. Send us your measurements and a photo of the space on WhatsApp, and an appliance expert will check them against the spec sheets and pull a few models that fit, from picking it out to delivery. Or call 800-936-8499 or email info@jjkohl.com. You can also browse all refrigerators.
