What Goes on the Top vs Bottom Rack: A Dishwasher Loading Order

Why placement matters

The dishwasher cleans by spraying hot water from rotating spray arms. One arm is usually under the bottom rack, and a second may be under the top rack or mounted on the ceiling of the tub. The spray pattern and water pressure are not uniform: items on the bottom rack are closer to the main spray arm and receive more direct water force, while the top rack gets gentler spray and lower heat from the heating element, which typically sits below the bottom rack.

Loading correctly prevents two common problems: blocked spray arms and melted plastic. If a large pot or baking sheet sits at the front and blocks the spray arm from rotating, the entire load suffers. If plastic containers touch the heating element or sit on the bottom rack where heat is highest, they can warp or melt. A well-planned load keeps water flowing and keeps materials safe.

Top rack: glasses, plastics, and small items

The top rack is the right home for glasses, cups, mugs, and small bowls. These items are lighter and need less aggressive water pressure. The top rack is also cooler, so it is the only safe place for plastic items that are marked dishwasher safe, such as food storage containers, lids, and reusable water bottles.

Angle cups and glasses face downward so water can drain and the spray arm can reach their interiors. Avoid nesting cups together; water cannot reach the inside of the lower cup. Place small plastic items so they stay in place and do not flip over.

Some dishwashers have a dedicated third rack for cutlery and small items. If your model has one, use it for measuring spoons, flat knives, and small lids, but keep larger plastic items off it if the third rack is positioned close to the heating element. Check your dishwasher’s manual for clearance guidance.

• Glasses and cups face down, spaced apart.
• Plastic containers and lids go on the top rack only.
• Small bowls and ramekins sit at an angle, not nested.
• Coffee mugs and travel mugs place upright or tilted.

Bottom rack: pots, pans, plates, and heavy items

The bottom rack is built for the heavy hitters. Plates, bowls, platters, pots, pans, and any item with baked-on or dried-on food benefits from the stronger spray and higher heat near the heating element. The bottom rack also has more room for large, bulky items like roasting pans and casserole dishes.

Place plates face the center of the dishwasher, facing the spray arm. Angle bowls downward so water drains and does not pool. Pots and pans should be placed upside down so the interior gets sprayed; large pans go on the sides to avoid blocking the spray arm. Never place a pot over the spray arm itself.

If your dishwasher has a bottom-rack spray tower (a vertical column with jets), keep the area around it clear. A single large cutting board can easily block this central tower and ruin the wash. Put large flat items on the outer sides of the rack.

• Plates face toward the center, not the edges.
• Bowls angle downward to avoid pooling water.
• Pots and pans upside down, tilted to drain.
• Large baking sheets on the sides, not over the spray arm.

Utensils and silverware

Most dishwashers have a silverware basket in the bottom rack or a cutlery tray in the third rack. The placement depends on your model. With a basket, alternate forks, spoons, and knives to prevent nesting. Keep handles facing down for a more thorough clean, except for sharp knives, which should face down to avoid injury when unloading.

If you have a cutlery tray, lay utensils flat with handles toward the back. This gives each piece more exposure to the spray and prevents water pooling in the concave side of spoons. The tray is also a good spot for small plastic lids, as long as they are held in place and do not block the top spray arm.

Never mix silverware and plastic in the same basket without checking orientation. Plastic utensils are light and may flip over, so place them with the handle up if they are prone to floating.

Loading order tips for a full cycle

Work from back to front. Load the top rack first, then the bottom, then the silverware basket. This order makes it easy to see if anything is blocking a spray arm or sticking out too far. Keep the detergent dispenser and the door gasket clear of tall items.

Scrape food off but do not pre-rinse. Energy Star states that rinsing dishes before loading increases water and energy use, and that modern dishwashers and detergents are designed to handle food residue. A quick scrape with a spatula is all you need.

Run full loads whenever possible. Energy Star also notes that a dishwasher uses roughly the same energy and water regardless of the number of dishes inside, so wait until the machine is full to maximize efficiency.

• Load from back to front to avoid blocking spray arms.
• Scrape heavy food residue, do not pre-rinse.
• Ensure nothing blocks the detergent dispenser or door gasket.
• Run full loads; a half-empty dishwasher wastes water and energy.

Special items: delicate glassware, plastics, and large cookware

Delicate glassware such as crystal should go on the top rack, but only if it is marked dishwasher safe. The gentler spray and lower heat reduce the risk of cracks and clouding. If your dishwasher has a dedicated glassware cycle, use it for these items.

Large plastic cutting boards and mixing bowls may fit on the top rack, but check that they do not cover the spray arm. If they are too large, place them vertically on the side of the bottom rack, angled so water still reaches them.

For very large pots or roasting pans, it is acceptable to skip the dishwasher and hand wash if they exceed the rack height. Forcing them in can block water flow. When in doubt, keep the spray arm free and load oversized items on the outer edges. See our guide on how to load a dishwasher for best cleaning for more tips.

What to pick for your use

Questions

Can I put plastic containers on the bottom rack?

Only if the plastic is marked dishwasher safe and the bottom rack has a low-heat setting, but it is risky. Plastics are safer on the top rack where the temperature is lower. Check the dishwasher’s manual for the location of the heating element. For more on material safety, see our article on plastic vs steel spray arms.

Should glasses face up or down in the top rack?

Face them down. This allows water to drain and the spray arm to directly hit the interior. Facing up traps water and can lead to spotting and poor drying. See our guide on removing film from glassware for fixes.

Does a silverware basket with lids need to be spaced differently?

Yes. Alternate the direction of each utensil to prevent nesting. If your basket has a covered top, you can lay flat items like measuring spoons on the cover to free up space. More details in our silverware basket article.

What should I do if a large pot blocks the spray arm?

Move the pot to the side of the rack or remove it. A blocked spray arm prevents water from reaching all dishes. Check the spray arm’s rotation after loading to ensure it can spin freely. You can also learn about spray arm cleaning to keep it working well.

Is it okay to put wooden cutting boards in the dishwasher?

Most wooden boards will warp in the dishwasher. Wash them by hand instead. Plastic or glass cutting boards are generally dishwasher safe and can go on the top rack. See our guide on plastic vs steel spray towers for related material considerations.

How do I prevent plastic lids from flipping over during the wash?

Secure them between tines on the top rack or place them in the silverware basket with a handle down. If they are very light, weigh them down with a heavier item or place them in the cutlery tray. For a full list of what goes where, check our loading guide.