Lb, Oz: Everything you need to know about these fishing weights

Posted On 2 January 2023

Lb, Oz... What's that all about? These are all terms from the United States that are commonly used by our fishermen. But what do these measurements mean? What exactly do they mean for a fisherman? Here's how to interpret these measurements in your day-to-day fishing.

lb - kg and oz - gr converter

Here's an automatic calculator of equivalence between Lb and Kilogram and also between Oz and Gram for fishing:

Oz to gram converter

Here's an automatic Oz/Gram equivalence calculator that you can adapt to your fishing:

Lb & Oz: Definition and measurement

Lbs and oz are commonly used in the fishing world to measure the weight of lures and fish, but also the power of our fishing rods and the strength of our lines. Here are a few things to remember about these two measurements.

Lb (Pound) or Livre in Frenchis, is a unit of measurement used to measure weight. 1 Lb is exactly equivalent to 453.59 grams.

Oz (ounce) is also a unit of measurement for weight, but on a smaller scale. This is because, 1 Oz is equivalent to 28.35 grams.

Mainly used in the United States, these measurements arrived in the fishing world at the same time as the lures arriving from that country and from Asia. Switching all the measurements under the acronyms Lb and Oz made it possible to standardise measurement scales worldwide. However, we naturally continue to use grams and kilograms as units in our daily lives.

Converting pounds to kilograms

As explained above, 1 pound = 453.6 grams or 0.45kg. When fishing, we often say that a pound is equivalent to half a kilogram to make rounding easier. This unit of measurement is used to measure the weight of a fish.

But Lb is also a unit of measurement used to indicate breaking strength. In fishing, a line marked 2lbs indicates to the angler that the line is 2 lb (pounds) strong.

Here is a summary of Lb and Kilograms:

Lb	Kg	Wire diameter
8 lbs	3kg 628.74g	0.25 mm
10 lbs	4kg 535.92g	0.28 mm
12 lbs	5kg 443.11g	0.30 mm
14 lbs	6kg 350.29g	0.35 mm
20 lbs	9kg 71.847g	0.40 mm
25 lbs	11kg 339.81g	0.45 mm
30 lbs	13kg 607.77g	0.50 mm

Convert Oz into grams

As explained above, 1 Ounce = 1 Oz = 28.35 grams. When fishing, the Oz is a unit of measurement used to indicate the weight of our lures.

Here is a table of equivalence between Oz and grams useful for fishing :

Oz	Gramme
1/8 oz	3.543 g
1/4 oz	7.087 g
5/16 oz	9 g
1/3 oz	9.449 g
3/8 oz	11 g
9/16 oz	16 g
5/8 oz	18 g
3/4 oz	21.262 g
1 oz	28.349 g
1 ½ oz	43 g
2 ½ oz	70 g
3 oz	85.048 g

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