---
title: "Soil pH amendment calculator"
description: "Conservative extension-style estimates for agricultural lime (to raise pH) or elemental sulfur (to lower pH) based on soil texture and target change."
slug: soil-ph
canonical: "https://lawncarejournal.app/tools/soil-ph/"
markdownMirror: "https://lawncarejournal.app/tools/soil-ph.md"
---

# Soil pH amendment calculator

Conservative extension-style estimates for agricultural lime (to raise pH) or elemental sulfur (to lower pH) based on soil texture and target change.

## Summary

Estimate ag lime or elemental sulfur to raise or lower pH.

## Disclaimer

Not a substitute for a soil test lab recommendation. Use labeled rates, wear PPE, and avoid over-application. Results assume 100% CaCO₃-equivalent lime or elemental sulfur.

## How to use

Open the interactive calculator at https://lawncarejournal.app/tools/soil-ph/. Results are estimates for DIY planning—verify product labels and local extension guidance before applying anything.

## Related guides

- [Soil test before Labor Day countdown](https://lawncarejournal.app/articles/cool-season-soil-test-before-labor-day-early-august-triage.md): Early-August DIY countdown for tall fescue, Kentucky bluegrass, perennial ryegrass, and fine fescue yards that want Labor Day fertilizer, lime…
- [Soil test before spring fertilizer](https://lawncarejournal.app/articles/spring-soil-test-before-lawn-fertilizer.md): Why DIY lawns should soil-test before spring fertilizer: pH, P/K surprises, and avoiding blind nitrogen bags—sampling guide framing; follow your lab’s method and local extension interpretation.
- [Soil test to cool-season N splits](https://lawncarejournal.app/articles/split-nitrogen-starter-fertilizer-soil-test.md): Split nitrogen and starter fertilizer decisions from a soil test for DIY lawns: phosphorus rules, starter vs maintenance N, and why dumping “green-up” bags without a test wastes money—test-first fertility.
- [Centipede decline take-all rot](https://lawncarejournal.app/articles/centipedegrass-decline-take-all-root-rot.md): Centipedegrass yellow patches: decline culture vs take-all root rot cues, low-N risk, and when fungicides are preventive only—extension-first DIY framing, not a site-specific Rx.

Agent map: https://lawncarejournal.app/llms.txt
Tools index: https://lawncarejournal.app/tools.md