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:
Lbs Kilogram equivalence calculator and recommended wire diameter
Oz to gram converter
Here's an automatic Oz/Gram equivalence calculator that you can adapt to your fishing:
Oz / Gram calculator
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 |
Useful links related to this article
Fishing licence 2023: Everything you need to know about fishing licences in 2023
Pike: Everything you need to know about the king of freshwater fish
