L'eggs to Spanx tights size

The short answer

L'eggs A is Spanx B or A by the two brands' own charts. 3 of 4 L'eggs sizes land on a different label at Spanx.

Both brands publish height and weight ranges. A row shows the size that covers most of the source size's range; where two sizes share it, both are listed.

Every L'eggs size read across to Spanx. Brand's own sizes on the left, Brand's own on the right.
L'eggs	L'eggs builds it for	Spanx, by chart	Same label	Spanx builds it for	Spanx also prints
A	height 147 to 170 cm, weight 39 to 68 kg	B or A	not published	height 147 to 175 cm, weight 52 to 68 kg	not published
B	height 155 to 180 cm, weight 48 to 75 kg	B or C	not published	height 147 to 175 cm, weight 52 to 68 kg	not published
Q	height 150 to 183 cm, weight 66 to 91 kg	C	not published	height 150 to 183 cm, weight 64 to 82 kg	not published
Q+	height 152 to 183 cm, weight 79 to 109 kg	D	not published	height 152 to 183 cm, weight 75 to 100 kg	not published

Tinted rows change label or sit between two sizes. Read from the two charts only; no formula and no averaging.

What wearers say

Charts describe a garment. People who own both brands describe a fit, and their answer ranks above this table once five of them stand behind it. Pick your size in the converter to see whether there are enough yet.

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Sources

L'eggs size guide, read on 2026-09-17. L'eggs on TrueToSize
Spanx size guide, read on 2026-09-17. Spanx on TrueToSize

Spanx to L'eggs