Angling unit converter
Casting weights, line ratings, lengths and water temperature, converted exactly — with the defining constant, the formula and the arithmetic shown for every result.
Weights, ratings and lengths
28.3495 g
The working
- Input:
- 1 oz
- Conversion factor:
- 28.349523125 g per oz
- Formula:
- result = value × factor = 1 × 28.349523125 = 28.34952313
One international avoirdupois ounce is defined as exactly 28.349523125 grams. British and American beach and boat leads are marked in ounces; European lure rods are rated in grams, and this is the conversion between them.
Water temperature
Kept separate because temperature conversion is affine rather than a simple factor — there is an offset as well as a multiplier, and treating it as a factor is the commonest way conversion code goes wrong in a way that still looks plausible.
50 °FFormula: °F = °C × 1.8 + 32 = 10 × 1.8 + 32. The inverse is °C = (°F − 32) ÷ 1.8, so 50.00 °F returns 10.00 °C.
Assumptions and limitations
- Every factor here is a DEFINED value rather than a measurement. The international pound, ounce, inch and foot are defined exactly in terms of SI units, so these conversions are exact and carry no uncertainty of their own.
- Converting a stated figure does not validate it. A line marked 12 lb converts to 5.44 kg; whether it actually breaks at either number is a separate question, covered in line strength and diameter.
- Displayed results are rounded for readability. The working shows more digits, and the underlying calculation uses full floating-point precision.
- Lead and lure sizes are manufactured in convenient fractions of a unit, so a converted value will rarely correspond exactly to a size that is actually sold.