You need a 36" cabinet. A 33" cabinet will only fit a 30" sink.
TIP: Standard cabinet sizes are in 3” increments. I.E.: 27”, 30”, 33”, 36”, etc. In general your sink should be at least 2-3” smaller than your cabinet size.
Measure the opening width under your existing sink (or where the new one will be installed) from left to right. This measurement is your cabinet size. Then, allow at least 2-3 inches on both sides for mounting hardware. For example, a 36" cabinet can accomodate a 30-32" sink.
To determine the maximum sink size for your base cabinet, measure the interior of your cabinet and subtract two to three inches from each dimension. A 36″ base cabinet can handle a 33″ sink at most; a 30″ cabinet should be fitted with a sink no larger than 27″ wide.
A 33" cabinet is outside measurement. Figure 3/4" wall thickness, so the inside measurement of the cabinet is 31½". You can possible squeeze the sink in there. It will be difficult to get at the side clips.
Standard sink base cabinet widths
Standard sink base cabinet dimensions range from 30 to 42 inches wide. 30 inches is the standard single basin sink base width. 33 inches is the typical double-basin, offset sink cabinet size.
The standard base cabinet widths are 12, 15, 18, 21, 24, 26.25, 27, 30, 33, 26, 39 and 42-inches. Filler cabinets are available in 6 and 9-inch widths.
The most common sizes for a kitchen sink are 30" or 33", however a standard size could measure anywhere between 24" and 36" in length. Generally, sinks up to 30" will contain one large single bowl.
Kitchen sink length:
The standard length is 30-33 inches, but varies whether you have 1 or 2 bowls. Some double bowl models range up to 48 inches. A single bowl sink will have one basin.
If there isn't enough width available in the cabinet, you won't be able to go for the bigger sink, even if there is room on the counter. Also, remember that you are going to have to create a larger hole in the counter to suit the new sink.
Some sinks will be labeled 30" Kitchen sink, but the basin size is in fact 28". [This sink will fit!] While other sinks are named after their TRUE 30" basin size [This will NOT fit]. Which means you CAN fit some "thirty" inch sinks in a 30" kitchen sink base cabinet.
Kitchen Cabinet Kings
General rule of thumb is actual sink should be 3" in actual width less than the sink base for smooth fit. However if you notch the sides of the cabinet, you should be able to get something as tight as 1.5 less than cabinet to fit.
Sink Landing Counter Space
The landing space requirement at a main sink is 24″ on one side and 18″ on the other side. The countertop landing area beside the main sink helps with Clean-up duties. With the dishwasher typically places on one side of the main sink the 24″ landing counter is taken care of.
33-inch sinks are one of the most popular sizes of kitchen sinks for homeowners wanting a sink large enough for bigger pots and pans with ample space for food preparation and cleaning.
Standard-sized kitchen sinks measure 22 inches by 30 inches.
While the front-to-back measurement of the sink typically remains the same (roughly 22 inches) due to the size of most cabinets, the length of various kitchen sinks can vary immensely.
The recommended size for a 36" base cabinet is a 33" farmhouse sink or smaller. It is recommended that your base cabinet be 3 inches larger than the size of the farmhouse sink you are considering to install.
A 30-inch wide or a 36-inch wide cabinet are most common. The height of the cabinet can be customized, but 36 inches is average. A typical 33 x 22-inch sink will fill a 36-inch base cabinet.
In general, the standard sink size is 22” x 30”. While single bowl sinks can have a width upto 36 inches, double bowl sinks can go upto 48 inches.
Common Bathroom Sink Sizes
Small: From 15 to 20 inches long and nine to 12 inches wide, with a depth between 5-3/4-in. and seven inches. Medium: From 20 to 30 inches long, 19 to 24 inches wide and about seven inches deep. Large: From 30 to 50 inches long, 19 to 24 inches wide and about five inches deep.
First, measure from side to side, and then back to front. This is the total width available for your new sink. It's important to pay attention to your corner ratio. Be sure the corner radius and the lip of your new kitchen sink are not smaller, so that all gaps are covered.
If you frequently use large pans or baking trays, it might be worth getting a sink with an extra wide or extra deep bowl – or even a 1½ / double bowl. If you don't have a dishwasher in your kitchen, make sure you get a sink with a built-in drainer, so you have enough space to let items dry after you hand wash them.
Understanding kitchen sink dimensions
The standard sink size is about 22 inches long to 30 inches wide, but once again it's crucial to take proper measurements.
Most kitchen cabinets are about 24 inches wide, but some can be as narrow as 8 inches or even less, and others may be 36 inches or more. The width of a cabinet is determined mainly by the size of the room and how much storage space you need. Standard widths are practical and used frequently.
30 inches- Used for single basin sinks. 33 inches- Used for offset sinks, or double basin sinks. 36 inches- Used for double basin sinks. 42 inches- This is the largest width in a base cabinet.