Dryer Symbols on Washing Machine Tags: What They Mean

You bought a new wool sweater, looked at the care tag, and saw a square with a circle inside and two dots. You assumed it meant medium heat in the dryer. You were wrong. The two dots mean medium heat, but the sweater also had a line under the symbol, which means delicate cycle. You dried it on normal and now it fits your dog. Dryer symbols look confusing, but they follow a simple pattern.

Dryer symbols on clothing tags are standardized icons that indicate whether a garment can be tumble dried, at what heat level, and on what cycle. They are part of the international care labeling system (ISO 3758) and appear on every garment with a care label.

To read dryer symbols, look for the square shape. A circle inside the square means tumble dry is allowed. Dots inside the circle indicate heat level: one dot for low, two for medium, three for high. Lines under the square indicate cycle type. A cross through the symbol means don’t tumble dry.

Tumble Dry Symbols

The square with a circle inside is the basic tumble dry symbol. It tells you the garment can go in the dryer.

Symbol	Meaning	What to Do
Square with circle, no dots	Tumble dry, any heat	Use any dryer setting
Square with circle, one dot	Tumble dry low	Low heat only (delicates, synthetics)
Square with circle, two dots	Tumble dry medium	Medium heat (most everyday items)
Square with circle, three dots	Tumble dry high	High heat (towels, bedding, cottons)
Square with circle, four dots	Tumble dry very high	Very high heat (rare, heavy cottons)
Square with circle, solid circle	No heat (air fluff)	Tumble with no heat, just air

Cycle Type Symbols

Lines under the square indicate the dryer cycle type, just like lines under the washtub indicate the wash cycle.

Symbol	Meaning	What to Do
Square with circle, no lines	Normal cycle	Standard dryer cycle
Square with circle, one line under	Permanent press	Use permanent press cycle
Square with circle, two lines under	Delicate cycle	Use delicate dryer setting

Do Not Tumble Dry Symbol

A crossed-out square with a circle inside means do not tumble dry. The garment must be air dried.

This symbol appears on:

• Silk and silk blends
• Wool and wool blends
• Lace and delicate knits
• Items with elastic (activewear, underwear)
• Garments with heat-set prints or embellishments
• Anything labeled dry-clean only
• Flame-retardant children’s sleepwear

Putting these items in the dryer can cause shrinking, fabric damage, elastic breakdown, and print deterioration.

Air Drying Symbols

Not all dryer symbols involve a machine. Several symbols indicate air drying methods:

Symbol	Meaning	What to Do
Square with curved line at top	Line dry	Hang on a clothesline or drying rack
Square with horizontal line inside	Flat dry	Lay flat on a surface (sweaters, knits)
Square with vertical lines inside	Drip dry	Hang dripping wet, no wringing
Square with diagonal lines in corner	Dry in shade	Keep out of direct sunlight

Line dry is the most common air drying method. Hang clothes on a line or drying rack. Good for shirts, pants, and most everyday items.

Flat dry is for items that stretch when hung. Sweaters, knits, and delicate items should be laid flat on a clean towel or drying rack. Hanging them causes the weight of the wet fabric to pull them out of shape.

Drip dry is for items that shouldn’t be wrung or squeezed. Hang them dripping wet and let gravity do the work. Good for sheer fabrics and items that wrinkle easily.

Dry in shade is for items whose colors fade in sunlight. Dark colors, bright colors, and items with natural dyes should be dried away from direct sun.

Heat Levels and Fabric Types

Heat Level	Symbol	Safe Fabrics	Avoid
Low (one dot)	Square/circle/one dot	Synthetics, delicates, permanent press	Heavy cottons (won’t dry fully)
Medium (two dots)	Square/circle/two dots	Cotton, poly blends, everyday items	Wool, silk, elastic items
High (three dots)	Square/circle/three dots	Towels, bedding, heavy cotton	Synthetics (can melt), delicates
No heat	Square/circle/solid circle	Items that need fluffing	Everything (won’t dry, just fluffs)

Products That Help You Follow Dryer Symbols

For air-dried items: A drying rack saves space and prevents stretching. Look for one with multiple levels for sweaters and flat-dry items.

For delicate cycle items: Use a mesh laundry bag in the dryer to protect delicates from snagging and tangling.

For maintaining your dryer: Clean the lint screen before every load. A clogged lint screen reduces drying efficiency and is a fire hazard.

For maintaining your washer: Use affresh Washing Machine Cleaner monthly to keep your washer running efficiently, which means clothes come out cleaner and dry faster.

FAQ

What does the dryer symbol on clothes mean? A square with a circle inside means the garment can be tumble dried. Dots inside the circle indicate heat level: one for low, two for medium, three for high. A cross through the symbol means don’t tumble dry.

What does a square with a circle and one dot mean? It means tumble dry on low heat. This setting is for delicates, synthetics, and permanent press items that can handle the dryer but not high heat.

What does a crossed-out square with a circle mean? It means do not tumble dry. The garment must be air dried. This applies to silk, wool, lace, elastic items, and anything that would shrink or be damaged by dryer heat.

What does a square with a horizontal line mean? It means flat dry. Lay the garment flat on a clean surface to dry. This is for sweaters, knits, and items that stretch when hung.

What does a square with a curved line mean? It means line dry. Hang the garment on a clothesline or drying rack. This is the most common air drying method for everyday items.

Can you put clothes with a no-tumble-dry symbol in the dryer? No. The symbol is there because the manufacturer tested the fabric and knows it can’t handle dryer heat. Putting it in the dryer can cause shrinking, fabric damage, and elastic breakdown.

What dryer setting should you use for most clothes? Medium heat (two dots) is safe for most everyday cotton and poly blend items. Use low heat for delicates and synthetics. Use high heat only for towels, bedding, and heavy cotton. When in doubt, use low heat.

References

1. International Organization for Standardization. “ISO 3758:2012 Textile Care Symbols.” iso.org.
2. Federal Trade Commission. “Clothing and Textiles Care Labeling.” ftc.gov.
3. The Spruce. “Laundry Symbols: What They Mean.” thespruce.com.
4. Whirlpool. “Washing Machine Cycles Explained.” whirlpool.com.