FR to UK clothing size

The short answer

By the formula, FR 44 is UK 16. On brand charts the most common answer is 14 (1 of 2 brands), and 2 different answers are in print.

The formula and the brands' most common answer differ on 3 of 11 sizes below. Use the brand's own number for the brand you are buying.

FR to UK. The formula column is arithmetic; the brand columns are read from 3 brand charts checked by hand.
FR	UK by formula	Most brands print	Other answers in print
32	4	not published	not published
34	6	6 (2 of 3)	4: Reiss
36	8	8 (2 of 3)	6: Reiss
38	10	10 (2 of 3)	8: Reiss
40	12	12 (2 of 3)	10: Reiss
42	14	14 (2 of 3)	12: Reiss
44	16	14 (1 of 2)	16: J.Crew
46	18	16 (1 of 2)	18: J.Crew
48	20	18 (1 of 2)	20: J.Crew
50	22	not published	not published
52	24	not published	not published

Tinted rows: the formula differs from the brands' most common answer. A brand is counted once per answer.

The widest split is at FR 34: brand charts print anything from UK 4 to 6 for the same size.