Free Garden Calculators

Every garden project starts with the same question: how much material do I actually need? Buy too little and you're making a second trip to the store. Buy too much and you're stuck with leftover bags of soil taking up garage space. These calculators give you exact quantities for soil, mulch, seed, rock, and fertilizer based on your actual measurements.

The plant spacing tools are built for raised bed gardeners who want to maximize their growing area. Enter your bed dimensions and pick your vegetables — the calculator shows how many plants fit using square foot gardening spacing or traditional row planting. No more guessing whether you can squeeze in another tomato plant.

All results include both bags and bulk quantities with cost estimates, so you can compare pricing at your local garden center or decide whether a bulk delivery makes more sense for larger projects.