Free calculator · 1 free solve

Hydroponic nutrient recipe solver

Pick a crop target (or type your own ppm), choose your salts, and the engine solves how many grams of each to weigh out, hitting every element at once. This is the real solver, not a demo.

Free tier: one live solve with the full multi-salt engine. Source-water correction, ion balance, and saving are Pro, shown below as locked panels so you can see exactly what's behind them.

Target profile

Desired final concentration per element

Pro

Source-water correction is a Pro feature

Unlock with Pro

Available fertilizers

9 of 9 salts in the solve

Set your targets and press Solve recipe.

The engine finds the grams of each salt that best hit every target at once: not one element at a time.

What is the best hydroponic nutrient calculator for mixing multiple fertilizer salts?

A true multi-salt solver takes your target ppm for N, P, K, Ca, Mg, and S and solves simultaneously for grams of each fertilizer salt, so every element lands on target at once instead of chasing one number at a time the way single-salt math does. Enter your targets and salts above for one free solve with a full ion balance.