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Curtain drop and pole length

The drop is the length of the curtain. Where you measure from depends on the heading; where you measure to depends on the look.

Checked against UK retailer and maker guides on 21 October 2026.

Where to measure from

Where to measure to

StyleWhere it ends (Dunelm)
Sill length1 cm above the windowsill
Below sill (apron)15 cm below the windowsill
Floor length1 cm above the floor
Puddle2 to 7 cm onto the floor

Dunelm says floor-length curtains are the most popular choice. Dunelm adds that below-sill (apron) curtains help with insulation.

Ready-made drops

Ideal Textiles; not every width comes in every drop
Dropcm
48 in122 cm
54 in137 cm
72 in183 cm
90 in229 cm
108 in274 cm

If your measured drop falls between two sizes, choose the longer one and take it up. Dunelm’s hemming tip: hang the curtain, mark 5 cm below where you want it to end, cut, then fold up 2.5 cm twice and iron, sew or use bonding tape.

How long a pole?

Questions

How do I measure curtain drop?

For eyelet curtains, from the top of the pole; for pencil pleat, from the ring eye or top of the track, down to 1 cm above the sill or floor (Dunelm).

What is a standard curtain drop?

Ready-made drops are usually 54, 72 or 90 inches (137, 183 or 229 cm).

How much wider should a curtain pole be than the window?

About 40 cm wider, 20 cm each side (Dunelm).

Where these numbers come from

Checked 21 October 2026. Makers round sizes differently, so always check the dimensions on the product you're buying.