🧪 Fertilizer Dilution
How much concentrate to mix per litre or gallon
About this calculator
The Fertilizer Dilution calculator mixes liquid fertilizer to the right strength. Enter the concentrate's label rate and your watering volume; it computes how many milliliters or teaspoons to add per gallon or liter, and can scale a recipe up or down. Over-concentrated fertilizer burns roots; too weak starves plants.
Tip: measure with a syringe, not a capful — capfuls vary by 50 percent or more, and consistent dilution is what separates feeding from burning — write the recipe on the bottle so every watering matches.