About Us

Our mission

Acres Per Hour Calculator exists to take the guesswork out of gardening and landscaping maths. How many bags of soil fill a raised bed? How much mulch covers a border three inches deep? How long will it take to mow two acres? These questions come up on every project, and the answers decide how much you spend and how well your plants grow.

We build free, fast and accurate calculators that answer those questions in the units you actually buy, bags, cubic yards, rolls, pallets, gallons and minutes, and explain how each answer is reached.

What you’ll find here

• 26 calculators across soil, planting and spacing, garden beds, watering and irrigation, lawns, fertilizer, and field and equipment work.
• Practical guides that explain the reasoning behind the numbers.
• US and metric support throughout, so you can measure with whatever is to hand.

How we make our calculators

Every calculator is built on standard geometry and exact unit conversions, for example 27 cubic feet per cubic yard, 0.623 gallons per square foot per inch of water and 43,560 square feet per acre. Where a calculation relies on typical values, such as grass seeding rates or field efficiency, we say so on the page, give a range and let you change the value.

Each tool page includes the formula, a worked example and a step-by-step breakdown of your own result, so you can check our maths. Calculations run entirely in your browser.

Our editorial standards

• We write for gardeners, homeowners, landscapers and small farmers, clearly and without jargon.
• We present typical figures as guidelines and point you to product labels, soil tests and local regulations, which should always take priority.
• We correct mistakes quickly. If you spot something that looks wrong, please tell us.

Get in touch

Questions, feedback and ideas for new calculators are always welcome. Visit our contact page to send us a message.