🐟 Kingfish Weight Calculator
Estimate king mackerel weight from length & girth — imperial & metric results instantly
| Fork Length (in) | Fork Length (cm) | Est. Weight (lb) | Est. Weight (kg) | Category |
|---|---|---|---|---|
| 20 | 50.8 | 2.1 | 0.95 | Juvenile |
| 24 | 61.0 | 4.3 | 1.95 | Small |
| 28 | 71.1 | 6.9 | 3.13 | Small |
| 32 | 81.3 | 10.3 | 4.67 | Medium |
| 36 | 91.4 | 14.6 | 6.62 | Medium |
| 40 | 101.6 | 20.0 | 9.07 | Large |
| 44 | 111.8 | 26.7 | 12.11 | Large |
| 48 | 121.9 | 34.7 | 15.74 | Trophy |
| 52 | 132.1 | 44.2 | 20.05 | Trophy |
| 56 | 142.2 | 55.4 | 25.13 | Trophy |
| 60 | 152.4 | 68.3 | 30.98 | Monster |
| 66 | 167.6 | 91.1 | 41.32 | Monster |
| Formula Type | Formula | Best Used For | Accuracy |
|---|---|---|---|
| Length Only (NOAA) | W = 0.000006 × L^3.093 | No girth measurement | ±15% |
| Length & Girth | W = (L × G^2) / 800 | With girth tape | ±5% |
| Large King (50+ lb) | W = (L × G^2) / 750 | Big trophy fish | ±7% |
| Total Length Adj. | FL = TL × 0.94 | Total length input | Conversion |
| Weight Class | Line (lb test) | Leader (lb) | Hook Size |
|---|---|---|---|
| Under 10 lb | 15–20 lb mono | 40 lb wire/fluoro | 1/0–2/0 |
| 10–25 lb | 20–30 lb braid | 60 lb wire | 3/0–4/0 |
| 25–50 lb | 30–50 lb braid | 80 lb wire | 5/0–6/0 |
| 50–70 lb | 50–80 lb braid | 100 lb wire | 7/0–8/0 |
| 70+ lb | 80–130 lb mono | 125 lb wire | 9/0–10/0 |
Kingfish is name for various species, between that is the royal demolition and the hita kingfish. The weight of kingfish changes a lot according to the species the area and the region. So are hardly talks about weight of kingfish, because the values range a lot.
Royal demolition usually has weight between 4,5 and 14 kilos. Kingfish widely reach until 170 centimetres of length and can pass 50 kilos. But the most many caught kingfish weigh from 5 until 15 kilos and measure 60 until 120 centimetres.
Kingfish Size and Weight
Until 20 pounds of weight are yet commonly caught, although they less common tahn the more little. One considers 20-pound kingfish nice trophy, but they can grow even much more.
There is also the north-kingfish, that differs in size. It reaches max length of around 18 inches and weight until 3 pounds. Usually even so they measure between 10 and 14 inches and weigh only half pound until one and half.
It is quite a lot little compared to royal demolition or hita kingfish.
Young royal demolitions are little. Recently hatching larvae measure only around 2,5 millimeters with big egg-bag. About their first year one knows little.
When they become one-year-olds, they weigh around 1,4 until 1,8 kilos and reach fork length of around 60 centimetres.
Interesting trait of the weight of kingfish is the range even four same length. 50-inch royal demolition can weigh 35 or 20 pounds according to the particular fish. Their mass even changes during one day, for instance if the belly is full or empty.
When one does not have a scale, the length helps to guess the weight by means of length-weight-chart for the species. For instance, 115-centimetre kingfish weigh about 20 kilos. Some very big catches also are noted.
One hita kingfish weighed 37 kilos, so around 81 pounds. Other reached 52 kilos, matching the world record for the species. In the royal demolition, one reported catches of 38, 40 until 45 and even 51 pounds 13 units.
That shows, that they areheavy fishes.
The north-kingfish are popular sea game fish in shallow Atlantic coasts, usually weighing only 1 until 3 pounds. So, when one mentions weight of kingfish, it matters what particular species one means.
