Measuring for appliances means taking height, width, and depth readings of the space where each unit will go, then adding clearance for ventilation, doors, and the delivery path. Getting even one number wrong can mean a costly return or a unit that doesn’t fit through your hallway. Here’s how to measure correctly for every major household appliance.
The Three Measurements Every Appliance Needs
Every appliance requires three core dimensions: height, width, and depth. The key principle across all of them is the same: measure the opening or space, not the old appliance. Your existing unit may have been a tight squeeze or a loose fit, so it’s not a reliable reference.
For each dimension, take at least two readings at different points. Floors sag, walls bow, and cabinets settle over time. For a range, for example, you’d measure the height from floor to countertop on the left side, the right side, and the center, then use the lowest number. Do the same for width: measure across the bottom and across the top of the opening, and use the smaller figure. This “use the smallest measurement” rule applies to every appliance. It guarantees the unit will actually slide in.
Depth is where people make the most mistakes. Always measure from the back wall to the front edge of the surrounding cabinetry. Don’t include knobs, handles, or doors in the depth measurement for the space itself. You’ll compare this number against the appliance’s spec sheet, which typically lists depth both with and without handles.
How to Measure for a Range or Stove
Most freestanding ranges are about 30 inches wide, 27 to 29 inches deep, and 36 to 36.5 inches tall. But ranges vary significantly by type. Compact models run 20 to 24 inches wide, while slide-in and commercial-style ranges can stretch from 30 to 60 inches wide. Double oven ranges tend to be 28 to 30 inches deep.
Place your tape measure at the back wall and extend it to the front edge of your cabinets for depth. For width, measure the gap between the cabinets on either side at both the top and bottom of the opening. For height, go from the floor to the countertop surface at three points (left, center, right) and record the lowest. If you’re replacing a slide-in or drop-in model, note that these types sit flush with the counter and typically require exact cutout dimensions rather than a simple gap between cabinets.
How to Measure for a Refrigerator
Refrigerators need more breathing room than most people realize. You need at least 1/8 inch to 1 inch of clearance on each side, 1 inch above the top of the case (not the hinge), and 1 to 2 inches behind the unit for ventilation. Without this airflow, the compressor works harder and the fridge runs less efficiently.
Start by measuring the width of the space between walls or cabinets, then subtract at least a quarter inch total for side clearance. Measure the height from floor to the bottom of any overhead cabinets, and remember to account for door hinges or hinge covers that extend above the body of the refrigerator. These can add an inch or more to the total height.
Depth is where refrigerators get tricky. Standard base cabinets are 24 inches deep, and with a typical countertop overhang, total depth reaches about 25 to 26 inches from the wall. A standard-depth refrigerator will stick out several inches past this line. Counter-depth models are designed to sit roughly flush with the cabinetry, but their interior capacity is smaller. Check the spec sheet for depth with doors closed and with handles included, since handles can add 1 to 2 inches.
Door Swing Space
Your fridge doors need to open at least 90 degrees, or you won’t be able to pull out drawers and shelves. A 36-inch single-door model needs about 44 inches of total width clearance for a 90-degree swing. French door models are more forgiving because each door is narrower: a 36-inch French door fridge needs roughly 40 inches. If your refrigerator sits near a corner wall, allow at least 4.5 inches between the side of the fridge and the wall so the door can open fully.
How to Measure for a Dishwasher
Dishwashers are the most standardized major appliance. The vast majority fit a rough-in opening that’s 24 inches wide, 34 to 36 inches tall, and 24 inches deep. Oversized models keep the same height and depth but may be wider, typically 30 inches.
Measure the opening width between the cabinets on either side. For height, measure from the floor to the underside of the countertop. Many dishwashers have adjustable legs, so you have a couple inches of play in the height. For depth, measure from the back wall to the front edge of the cabinet face. Make sure there’s enough room behind the unit for the water supply line and drain hose, which usually need a few extra inches.
How to Measure for a Washer and Dryer
Washers and dryers need more rear clearance than kitchen appliances because of water hoses, drain lines, and dryer vents. Plan for at least 3 inches between the back of the dryer and the wall. This is the minimum for the vent duct to connect properly without being crushed, which is both a performance issue and a fire hazard. Washers need similar clearance for hot and cold water hoses and the drain pipe.
Measure the width of your laundry space and divide by two if you’re placing units side by side. Leave a small gap between the machines (half an inch is usually enough) so they don’t bang into each other during spin cycles. For stacked units, measure the full height from floor to ceiling, keeping in mind that a stacked pair can reach 75 to 80 inches tall.
If your laundry area is in a closet, also measure the door opening. Many closet doors are narrower than the machines themselves, and you’ll need to confirm the units can physically pass through.
How to Measure for a Wall Oven
Wall ovens are built-in appliances, so you’re measuring a cabinet cutout rather than a freestanding gap. The cutout dimensions listed in the oven’s installation guide tell you the exact rectangular hole your cabinet needs. These are different from the oven’s exterior frame dimensions, which are slightly larger because the face frame overlaps the cabinet edges.
Most wall oven cutouts are 23.5 to 24 inches deep, excluding the door and handle. Widths typically come in 24, 27, or 30 inches. Measure the height, width, and depth of your existing cutout and match those to the new oven’s spec sheet. Even a quarter inch can matter here, so use a steel tape measure rather than a cloth one.
Measuring the Delivery Path
A perfectly measured kitchen space means nothing if the appliance can’t get there. Before you buy, walk the path from your front door (or whichever entry point the delivery team will use) to the installation spot, and measure every pinch point along the way.
Key spots to measure include your front door or entryway, any gates, hallways, stairways, and the gap between a kitchen island and the surrounding counters. Measure the narrowest dimension at each point. Don’t forget to account for door knobs, latches, handrails, shelves, and other wall-mounted items that reduce the usable width. A doorway that measures 32 inches wide loses about 2 inches on the hinge side from the door knob and strike plate.
If any opening is too tight, check whether you can remove the door from its hinges or temporarily take down a handrail. Delivery crews do this routinely, but it’s better to know in advance. For refrigerators, the doors and handles can sometimes be removed to reduce the unit’s width by several inches. Check the manufacturer’s guide to see if this is an option for your model.
Tips for Accurate Measurements
- Use a metal tape measure. Cloth and paper tapes stretch and sag. A rigid metal blade gives you a reliable reading, especially over longer distances like depth.
- Measure twice, write it down once. Take each measurement at least twice and confirm they match before recording. Keep a sketch with all dimensions labeled so you have it at the store or when ordering online.
- Always use the smallest number. If your width at the top is 30.25 inches and at the bottom is 30 inches, your usable width is 30 inches.
- Check the spec sheet, not the marketing name. A “30-inch range” may actually be 29.875 inches wide. The installation guide or spec sheet has the real numbers, including required clearances the manufacturer specifies for safety and warranty compliance.
- Account for flooring changes. If you’re also replacing flooring, measure height based on the finished floor level. New tile or hardwood can raise the floor by half an inch or more, which may prevent a dishwasher or range from sliding under the countertop.