Bull Trout Growth Tool

Length Conversion

Total Length (TL, mm): -

Estimated Age (Years): -

TL = 18.985 + 1.014 × FL

Fork Length (FL, mm): -

Estimated Age (Years): -

FL = -13.862 + 0.974 × TL

Upload FL or TL Data (CSV or XLSX)

Note: The tool will automatically detect columns labeled FL, Length.FL, TL, or Length.TL.

Calculated Ages

Age = −(1 / 0.207) × ln(1 − FL / 812.3)

Fork Length (FL, mm) Estimated Age (Years)