What Size Paint Tray Do You Need for Your Roller?
Pick a tray that matches your roller width. A 9 inch tray is the standard choice for walls and ceilings, and a 4 inch tray suits trim, doors and touch-ups. If your roller is a different size, measure the roller cover and choose a tray whose well is a little wider than the cover.
Mister Rui 4 inch paint tray with liner 10 pcsBest overall
Bates Choice QBAI020B408Metal tray for 9 in rollers
Voomey A03012Roller frame includedThe short version: match the tray to the roller
Paint trays are named for the roller they are built to hold. A 9 inch tray fits a 9 inch roller, and a 4 inch tray fits a 4 inch mini roller. The number refers to the roller cover width, not the overall size of the tray, so a tray can be much longer than its label suggests.
The match matters because the roller has to sit in the paint well and roll freely up the ramp. If the tray is too narrow, the roller ends hang over the sides and drip. If it is far too wide, you pour in more paint than the job needs and some of it dries before you use it.
If you are still choosing the roller itself, our best paint roller page lists roller options side by side, which can help you settle the size before you pick a tray.
Common paint tray sizes and what they are for
Most home projects use one of two sizes. Larger rollers exist, and they usually need a deeper tray or a bucket with a grid, but 4 inch and 9 inch trays cover most DIY work.
The table below shows how the two common sizes compare, using the sets we list on our spec sheet.
| Roller size | Best for | Tray lengths listed in our data | Weights listed in our data |
|---|---|---|---|
| 4 inch | Trim, doors, cabinets, touch-ups | 11.5 in to 13 in | 0.57 lb to 1.65 lb |
| 9 inch | Walls and ceilings | 17.4 in (one model lists it) | 1 lb to 2.6 lb |
What size paint tray for a 9 inch roller
A 9 inch tray is the standard pick for walls and ceilings. It holds enough paint to cover a good stretch of wall before you need a refill, and the ramp is wide enough to load the whole roller cover evenly.
In our lineup, the Mister Rui 9 inch set lists a tray length of 17.4 in, the longest of the four models that list a length. It also lists a textured ramp and a non-slip base. The Bates 9 inch set uses a metal tray and comes with 20 liners, and it is the heaviest set listed at 2.6 lb.
Plastic and metal both work. Metal feels sturdier, while plastic is lighter to carry around a room. For comparing both styles line by line, see our best paint tray page.
What size paint tray for a 4 inch roller
A 4 inch tray is a small, light tray for detail work. Use it when you are painting a door, a window frame, a cabinet or a small patch. It keeps a small amount of paint handy and takes up little space on a ladder shelf or a stool.
The 4 inch trays on our spec sheet are the Mister Rui 21-pack set, the Voomey set, a second Mister Rui tray and a Bates tray. The Bates 4 inch tray is the lightest, at 0.57 lb. The Mister Rui 21-pack is the only set that lists a capacity, at 0.53 qt, along with a non-slip base, a pour spout and a magnetic holder.
A small tray is not a good fit for a whole room. You would refill it constantly, and loading a 9 inch roller in it does not work.
How to measure a paint tray
Measure the tray before you buy if you are not sure it will fit your roller. A tape measure is all you need.
Follow these steps:
- Measure the width of your roller cover from end to end. This is your roller size.
- Measure the inside width of the paint well. It should be slightly wider than the roller cover so the ends do not rub the sides.
- Measure the length of the tray from the back of the well to the top of the ramp. This tells you how much counter, floor or ladder space it needs.
- Check the ramp. A textured or ribbed ramp helps you work paint into the cover and roll off the extra.
- Check the depth. A deeper well holds more paint, but it also makes the tray heavier when full.
Other features worth checking
Size is the first filter. After that, a few details can make a tray easier to use.
Liners make cleanup quick. You lift out the used liner and drop in a fresh one to change colors. In our lineup, two sets include 20 liners and two include 10, and the liner count ranges from 10 to 20 across all six products. Reusable liners are listed on only one set.
A non-slip base keeps the tray from sliding on smooth floors. A pour spout helps you return extra paint to the can. A magnetic holder keeps a brush out of the paint. Only some sets list these features, so read each listing closely.
Safety notes: set the tray on a stable surface, not on a ladder step you need to stand on. If you roll a ceiling, wear safety glasses so drips stay out of your eyes. Keep the room ventilated, and follow the paint can label for any other precautions.
Frequently asked questions
Can I use a 9 inch tray with a 4 inch roller?
You can, but it is awkward. The roller is much narrower than the well, so you waste paint and have to tilt the tray to load it. A 4 inch tray is the better match.
Do paint tray liners fit every tray?
No. Liners are made for a specific tray size, so check the roller size on the liner packaging. Some brands say their liners fit other trays, so read that listing before you count on it.
How much paint should I pour into the tray?
Fill the well only part way, so the paint pools at the bottom of the ramp. Add more as you go. A full tray is heavy, easy to tip and lets paint skin over.
Can I use a bucket instead of a tray?
Yes, many painters roll from a bucket with a grid, especially with larger rollers. A tray is easier to move, and it is a better fit for small jobs and color changes.