Lime Requirement Calculator
Calculate lime needed to adjust soil pH
About this calculator
The Lime Requirement Calculator helps gardeners and farmers determine the exact amount of lime needed to adjust their soil pH to optimal levels for plant growth. By calculating precise lime requirements based on current soil pH, target pH, and soil characteristics, this tool prevents over-liming or under-liming, which can harm plant health and waste resources. Proper soil pH ensures maximum nutrient availability and promotes healthy root development.
How to use
Enter your current soil pH level, desired target pH, and soil type into the calculator. Add your plot size or area to be treated. The calculator will instantly determine the pounds or tons of lime required per square foot or acre to achieve your target pH level.
Frequently asked questions
How often should I test and lime my soil?
Test soil pH annually and apply lime as needed. Most soils require liming every 2-3 years, depending on rainfall and crop removal.
What's the best time to apply lime?
Apply lime in fall or early spring, at least 2-3 months before planting to allow time for soil pH adjustment.
Can I apply too much lime to my soil?
Yes, over-liming raises pH too high, reducing nutrient availability and potentially causing plant deficiencies. Always follow calculated recommendations.