Lime Requirement Calculator
Enter your own measurements and assumptions; the browser applies the displayed formula.
A QUICK WALKTHROUGH
How to use this tool
- Enter target and current soil pH.
- Enter a buffer factor and a neutralising percentage greater than zero.
- Review max(0, target pH − current pH) × buffer factor × 100 ÷ neutralising percentage.
Units and assumptions
The result uses the units represented by your buffer factor. Use measurements and a factor appropriate to those units; no application unit or factor is assumed.
Limits and handling
This is an indicative calculation, not agronomic advice or a product recommendation. Follow the product label, required personal protective equipment (PPE), and local regulations. Values are processed in this browser.
GOOD TO KNOW
Common questions
Does this choose a lime product or target pH?
No. You supply the target, measurements, factor, and neutralising percentage.
What if current pH is at or above the target?
The formula returns zero; it does not assess whether lime is suitable for your soil.