Conversion factors

Catch limits are in tonnes and are in live weight and relate to the maximum amount that may be caught and retained on board, landed or trans-shipped each calendar month, unless otherwise stated.

To calculate the live weight, multiple the landed weight by the appropriate conversion factor.

Species, codes and conversion factors
Species	Code	Gutted	Gutted and headed	Fillets	Parts
Anglerfish	ANF	1.22	3.0		3.0 (1)
Bass	BSE	1.125		2.7
Blue whiting	WHB	1.15
Brill	BLL	1.09	2.7
Cod	COD	1.17	1.7	2.6	1.38 (2)
Conger eel	COE	1.125		2.7
Common dab	DAB	1.11	1.39
Common sole	SOL	1.04		2.5
Flounder	FLE	1.08		2.7	1.39 (3)
Greenland halibut	GHL	1.08
Halibut	HAL	1.08		2.7
Haddock	HAD	1.17	1.46	2.6
Hake	HKE	1.11	1.4	2.6
Herring	HER	1.12	1.19
Horse mackerel	JAX	1.08
Lemon sole	LEM	1.05		2.5
Ling	LIN	1.14	1.32	2.64	2.8 (4)
Mackerel	MAC	1.09
Megrim	LEZ	1.06		2.5
Mullet	MUL	1.125		2.7
Nephrops	NEP				3.0 (1)
Plaice	PLE	1.05	1.39	2.4
Pollack	POL	1.17	1.36	2.7
Redfish	RED	1.19
Red mullet	MUR	1.125		2.7
Saithe	POK	1.19	1.44	2.9
Skates and rays (7)		1.13			2.09 (5)
Spurdog	DGS	1.35		2.7	2.52 (3)
Tope	GAG	1.125
Turbot	TUR	1.09		2.7
Tusk	USK	1.14
Whiting	WHG	1.18	1.41	2.7
Witch	WIT	1.06		2.7
Deep sea species
Black scabbardfish	BSF	1.24			1.4 (2)
Blue ling	BLE	1.17	1.32	2.8
Greater forkbeard	GFB	1.11	1.4
Greenland halibut	GHL	1.08
Roundnose grenadier	RNG	1.11	1.92		3.2 (6)
Red seabream	SBR	1.11		2.7

(1) Tails
(2) Headed
(3) Gutted, headed and skinned
(4) Gutted and salted
(5) Wings
(6) Gutted, headed and tailed
(7) Species specific codes and ID guides are available from your local office.