A standard rectangular placemat is about 45 × 30 cm (roughly 18 × 12 inches), and a standard round placemat is about 38 cm (15 inches) across. This guide gives common placemat sizes in centimeters and inches, explains how to choose the right size for your table, and lists the exact dimensions of every Rumiloo placemat.

Shop by size: Rectangular, 45 × 30 cm · Oval, 45 × 30 cm · Round, 38 cm

Standard placemat dimensions at a glance

Shape Common size (inches) Common size (cm) Rumiloo size
Rectangular 12 × 18 in to 13 × 19 in about 30 × 45 cm to 33 × 48 cm 45 × 30 cm (17.7 × 11.8 in)
Oval similar to rectangular about 30 × 45 cm 45 × 30 cm (17.7 × 11.8 in)
Round about 15 in across about 38 cm across 38 cm (approximately 15 in)
Scalloped round about 15 in across about 38 cm across 38 cm (approximately 15 in)

Sizes vary by brand, so always check the listed dimensions before you buy. Every Rumiloo placemat is 2 mm (0.2 cm) thick.

Placemat size in cm and inches

  • 45 cm = 17.7 inches (the long side of a Rumiloo rectangular or oval placemat)
  • 30 cm = 11.8 inches (the short side)
  • 38 cm = 15 inches (the diameter of a Rumiloo round or scalloped placemat)

How to choose the right placemat size

Fit your dinner plate. The short side of a rectangular placemat should be wider than your dinner plate so the rim does not hang over the edge. A 30 cm (11.8 in) depth suits typical dinner plates of about 25–28 cm (10–11 in).

Allow room for cutlery and a glass. A 45 cm (17.7 in) rectangular placemat leaves space on each side of the plate for a fork and knife, with a glass at the top right.

Measure your table. A common rule of thumb is about 60 cm (24 in) of table width per place setting. Leave a little space between neighboring placemats and keep each placemat clear of the table edge and the centerpiece.

Placemat sizes by table shape

Rectangular and oval placemats suit rectangular and oval dining tables, where they line up with the table edge. Round and scalloped placemats suit round tables and smaller settings, because they follow the curve of the table and take up less space between seats. For a side-by-side comparison, read round vs. rectangular placemats.

How many placemats do you need?

Most households set one placemat per seat and keep a few extra for guests. Rumiloo placemats are sold individually, with a minimum of six of each design or color. See how many placemats to buy for table-by-table suggestions.

Rumiloo placemat sizes

Placemat size FAQs

What is the standard size of a placemat?

Rectangular placemats are commonly about 12 × 18 inches (about 30 × 45 cm), and round placemats are commonly about 15 inches (38 cm) across.

What size is a round placemat?

Round placemats are usually about 15 inches (38 cm) in diameter. Rumiloo round and scalloped placemats measure 38 cm.

Are oval placemats the same size as rectangular ones?

Often they share the same footprint. Rumiloo oval and rectangular placemats both measure 45 × 30 cm; the oval styles have curved ends.

How thick is a placemat?

Thickness varies by material. Rumiloo PVC and woven placemats are 2 mm (0.2 cm) thick.

Browse every shape in the placemats collection.

Plan the glass and coaster separately

Set out the plate, utensils and drink together before choosing additional accessories. Try the glass in its intended position and check that it sits flat without rocking across layered edges. A coaster and mat can share a color or texture without being identical.

Follow the tabletop and accessory makers’ instructions for the intended use; coordinated appearance alone does not establish heat or moisture protection. Check the listing for what is included. Use the basic table-setting guide for placement and the table-layer guide to compare combinations.