Cabinetry is sized using the 3" increment system. While custom and semi-custom (built-to-order) cabinets may allow some 'odd dimension' modifications, using the 3" system will serve you well when working on your basic floor plan.Most appliances are standardized sizes, but a few, like microwaves are not. Always check appliance manufacturer's specifications to be sure you have allowed the correct amount of space for your final selection in each category!
Dishwashers - 24" wide (for installation in a cabinet, raising the height, allow 27")
Free-standing and drop-in ranges - 3-" wide
Cook Tops - 30", 36" wide. (Some modular units available in 42" and 48" wide)
Wall Ovens - 27", 30", 36" wide. (Note: since wall ovens are always built-in, actual oven widths vary. The dimensions given here represent the cabinet sizes required.)
Refrigerators - free-standing models, 30 - 36" wide. (Built-in models, up to 48" wide)
Trash Compactors - 15" and 18" wide
Microwave Ovens - Varied
Sinks - Varied, but most are designed to fit in 30", 33" or 36" base cabinets. (Be sure to check manufacturer's specifications on your final selection!)

The National Kitchen and Bath Association (a trade organization for kitchen and bath dealers, designers, manufacturers, etc.) has established guidelines for kitchen planning. Prioritize the guidelines in case you cannot accomplish them all. Check them off as you complete your plan to be sure you have planned adequate space for each task area in your kitchen. Be sure to have a kitchen design specialist review your plan before ordering
Transforming the room with a complete kitchen makeover? Superkitchens can assist you to manage your remodel, estimate your cost, and should you choose to, select a design professional who can advise you on everything from measuring for new appliances to selecting an elegant faucet. Updating your kitchen with a new look? A fresh coat of paint, new wallpaper or changing the window treatments can go a long way in refreshing the style of your kitchen.