What are standard UK bed sizes?

Single: 90×190cm. Double: 135×190cm. King: 150×200cm. Super King: 180×200cm. Cot: 60×120cm. These are mattress top dimensions.

What is a good side drop?

Standard side drop is 30–40cm. This covers the mattress depth (typically 25cm) plus a few centimetres overhang. For a luxurious look, add more. For a coverlet style, use 15–20cm.

Should I add pillow tuck?

Add 20–30cm at the top for a pillow tuck if you want the quilt to fold over pillows. If using a separate pillow sham, you can reduce or eliminate this.

SewCalcs

Quilt Size Calculator — Bed Quilt Dimensions

Calculate quilt dimensions for standard UK bed sizes with side drop, foot drop and pillow tuck allowances.

Bed Size

Side Drop

Foot Drop

Pillow Tuck

How We Calculate This

Quilt dimensions are calculated from the mattress size plus allowances.

The formula

Width = Mattress width + (Side drop × 2)

Length = Mattress length + Foot drop + Pillow tuck

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify quantities before cutting or purchasing fabric.