Оценка Рыба Вес from Длина (W = aL^b)

Оценка вес from рыба длина and coefficients a and b, then сохранять the результат, диапазон ошибки, сохраненные наборы коэффициентов, and JSON для обмена in one процесс.

The страница makes TL / FL / SL assumptions explicit and supports quick оценкаs, coefficient fitting, and партия processing without leaving the браузер.

Длина ввод in cm or inches, вес вывод in g, kg, oz, or lb Справочные пресеты, сохранение в браузере, and JSON sharing Solve for a from one пример or fit a and b from несколько образцов Партия вычисление and Экспорт CSV for many рыба

What this инструмент covers

Ввести вид, длина, тип длины, and coefficients a and b to вычислить оценкаd вес and a practical диапазон ошибки immediately.
Начать from РыбаBase-based справочные пресеты, then заменить them with your own поле or factory coefficients and reиспользуйте them later.
Downзагрузить набор коэффициентовs as JSON, импортировать them again, or создайте a поделитьсяable URL with the текущий состояние.
When coefficients are unknown, derive them from a один образец or from несколько measured pairs.
The страница is prepared for Japanese and English используйте and for единица переключитьing in international workflows.

Как пользоваться

  1. Ввести the вид name, длина, единица, and тип длины, then выбрать a справочный пресет or ввести coefficients a and b directly.
  2. Настроить the процент ошибкиage to обновить the оценкаd вес and диапазон on the right in real время.
  3. Once the coefficients are settled, сохранить them with a name and примечания or экспортировать them as JSON.
  4. Используйте the coefficient fitting tab when you do not know the coefficients yet, and the партия tab when you need результатs for many measurements.

Examples

Estimate from a reference preset

Input

Species: Japanese jack mackerel, length: 35 cm, length type: TL, a=0.01096, b=2.97, error: ±20%

Output

Estimated weight: about 421 g, range: about 337 g to 505 g

Solve for a from one sample

Input

Length: 35 cm, observed weight: 432 g, assumed b: 3.0

Output

a = 0.01008, formula: W(g) = 0.01008 × L(cm)^3.0

Batch calculation

Input

Run 25 cm, 30 cm, and 35 cm with the same coefficient set

Output

List estimated weight, low range, and high range for each row and export the table as CSV

Reference presets

Built-in presets are reference values only. Check the source label and length-type assumption in the result panel, and replace them with measured operating values whenever possible.

Japanese jack mackerel: a=0.01096, b=2.97, TL, based on cm/g. FishBase reference value.
Chub mackerel: a=0.00741, b=3.05, TL, based on cm/g. FishBase reference value.
Olive flounder: a=0.00794, b=3.07, TL, based on cm/g. FishBase reference value.
Japanese seabass: a=0.01259, b=3.02, TL, based on cm/g. FishBase reference value.
Red seabream: a=0.01288, b=3.03, TL, based on cm/g. FishBase reference value.
Blackhead seabream: a=0.02138, b=2.99, TL, based on cm/g. FishBase reference value.

Словарь

TL / FL / SL

Total length, fork length, and standard length. The coefficient set is only valid when the same length definition is used.

Coefficients a and b

The values that define the relationship W = aL^b. They vary by species, region, season, and stock condition.

Error range

The working range around the estimate. Adjust it to reflect regional differences, maturity, and body condition.

Reference coefficient

A coefficient set taken from published or public reference data. Validate it before operational use.

Fitted coefficient

A coefficient set derived from your own measured fish, either by back-solving or by regression.

Формулаs

  • Estimated weight W(g) = a × L(cm)^b
  • Lower bound = W × (1 - error% / 100)
  • Upper bound = W × (1 + error% / 100)
  • Single-sample solve: a = W / L^b
  • Multi-sample fit: log(W) = log(a) + b log(L)

Вопросы и ответы

Я не знаю a и b. Что делать?

Используйте the coefficient fitting tab. You can solve for a from one measured пример, or fit both a and b from несколько length-weight pairs.

Могу ли я вычислить many рыба at once?

Yes. The партия tab accepts table entry and CSV-style paste, and the результат can be downзагрузитьed as CSV.

Могу ли я переключить between cm and inches, or g and lb?

Yes. Ввод and вывод единицы can be changed at any время. Internal calculations always используйте cm and g.

Why can the оценка be far from the фактический вес?

Рыба of the same вид still vary by region, season, зрелость, fatness, and measurement метод. Используйте the оценка as a диапазон, not as a guaranteed exact значение.

Where are сохранено coefficients stored?

Without login support, сохранено sets live in this браузер's localStorage. Сохранять a JSON экспортировать if you need a portable скопировать.

Какие-либо данные отправляются на сервер?

No. Вычисление, сохранить, and JSON generation all stay inside the браузер.

Важные примечания

  • This оценка is only a ориентир. Region, season, зрелость, упитанность, and measurement метод can изменить the результат substantially.
  • Always используйте coefficients with the same тип длины and единица assumption. The internal base is cm and g.
  • Справочные пресеты are not operating значения. Используйте measured data to build your own sets whenever possible.