Soil Amendment pH Adjustment Calculator

A simple UK-friendly soil pH adjustment calculator to help gardeners raise or lower soil pH using lime or sulphur. Enter your current pH, target pH and soil type to get accurate amendment amounts plus helpful gardening tips.

Perfect Soil Starts with the Right pH

Every gardener dreams of rich, healthy soil, but there is one secret ingredient that often gets ignored, pH. Whether your garden is struggling with stubborn clay, washed-out sand or slightly sour loam, soil pH is the invisible force that determines how well your plants absorb nutrients. Too acidic and your veg sulk. Too alkaline and your flowers refuse to bloom. Somewhere in the middle lies the sweet spot for almost every crop.

Soil pH Adjustment Calculator

That is where this Soil Amendment / pH Adjustment Calculator comes in. Instead of guessing or throwing random products onto your beds, this tool gives you a precise recommendation based on real horticultural conversion rates. Just enter your current pH reading, what pH you want to reach and your soil type, and the calculator works out the amount of lime or sulphur needed per square metre.

Made for Everyday Gardeners

No lab coat required. We translate the science into straightforward, practical advice. Want to raise the pH of your veg patch? The tool recommends the right amount of garden lime. Need to lower your soil pH for blueberries or azaleas? You get an instant sulphur estimate. You also receive simple tips for applying amendments safely and effectively.

Take Control of Your Garden Soil

Whether you're reviving a tired border, setting up a raised bed or improving a lawn, this tool gives you confidence and clarity so you can garden smarter, not harder.

Final Word

Good soil is the heart of a good garden, and adjusting pH is one of the easiest ways to unlock healthier, stronger growth. This calculator saves you money, prevents over-correcting and helps your soil drift gently toward the ideal conditions for whatever you want to grow. Think of it like giving your garden a nudge in the right direction, instead of a shove. With the right pH, fertiliser works better, plants root faster and everything looks greener and more alive.

Use this tool anytime before planting a new bed, preparing veg plots or troubleshooting unhealthy growth. A few small tweaks now can transform a whole season’s results later. Happy gardening, and may your soil always be balanced, nourishing and full of life.