Convert the unit first. Then ask whether the ingredient itself should be converted.
Length, liquid volume and temperature have mathematical conversions. Flour, salt, honey and grated cheese do not become grams merely because a formula knows how many milliliters are in a cup. To convert an ingredient from volume to weight, you need an ingredient-specific reference value.
Common liquid measures
- 1 U.S. teaspoon is about 4.93 mL; kitchens usually round to 5 mL.
- 1 U.S. tablespoon is about 14.79 mL; kitchens usually round to 15 mL.
- 1 U.S. fluid ounce is about 29.57 mL.
- 1 U.S. cup is about 236.59 mL; many practical recipes use 240 mL.
- 1 metric cup is 250 mL in common culinary use.
- 1 Australian tablespoon is 20 mL.
Why baking should move toward grams
Flour compacts. Brown sugar can be packed with different pressure. Salt crystals occupy radically different volumes. Grams remove much of that ambiguity, which is why professional formulas and serious baking references tend to privilege weight.
Temperature
For oven work, convert Fahrenheit and Celsius mathematically, then round only to a temperature your oven can actually select. A nominal 350°F oven is about 177°C, but a recipe written for a European oven will often state 180°C. Treat those as culinary targets, not a philosophical debate about the “correct” number.
The Lello Culinary Reference includes a live universal converter, ingredient weight index, pan scaling calculator and baker’s percentage tool. Use this page as the map and the Reference as the working desk.
