NPKalc - Fertilizer Calculator vs Fertilizer Calc App Usage & Stats
NPKalc is an easy to use fertilizer calculator that supports granular and liquid fertilizers with different unit of measures for input. Perfect for the DIY lawn dominator, gardener, landscape professional, golf course superintendents and farmers.
Disclaimer: While we strive to provide accurate information, we do not accept responsibility for any misuse of the NPKalc app. Users are encouraged to use the app responsibly, cross check calculations and consult with experts for specific advice on fertilizer usage.
- Apple App Store
- Free
- Utilities
Store Rank
- -
Take control of every element of fertilization.
Add Fields -> Set Fertilization Target -> Add fertilization
you can take control of N, P, K, MG, CA. for every field,
setting the target and see how may Kg/Ha of every element your crops need.
You deserve a custom area unit? No problem!
just add your custom area unit in square meters (es. Acre = 4046)
and Fertilizer Calc does the conversione for you.
You can add multiple custom unit with pro membership.
- Apple App Store
- Free
- Utilities
Store Rank
- -
NPKalc - Fertilizer Calculator VS. 
Fertilizer Calc AppJanuary 18, 2026