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Free garden planning tools

Grow a plan before you plant.

Plan one garden bed from the ground up. Calculate soil bags, mulch, plant spacing, seed packets and watering with measurements saved on your device.

Plan my garden bed ↓Spacing

Garden bed

Saved on this device
Soil settings

Use product labels and local growing guidance. Defaults are examples.

Currency changes display only; enter all prices in one currency.

Bed sketch

Top view · rectangular bed

Quantity

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Your garden toolkit

Soil Calculator — Bed Volume, Bags & CostEstimate the soil needed for a rectangular bed. Deduct existing fill, add your chosen allowance and round up to whole bags with a material cost.Mulch Calculator — Volume, Bags & Material CostCalculate mulch volume for a rectangular bed using layer depth and allowance. Convert between litres, cubic metres, cubic feet and cubic yards.Plant Spacing Calculator — Rows & Bed LayoutLay out plant positions in a rectangular bed with spacing along its length, row spacing across its width and clearance from every edge.Seed Calculator — Germination, Reserve & PacketsEstimate seeds and whole packets from your bed’s plant positions, an entered germination percentage, reserve allowance and packet size.Watering Calculator — Rainfall, Volume & RuntimeConvert a weekly water-depth target and effective rainfall into irrigation volume, water per session and runtime at your measured system flow.

How it works

Start with the inside length and width of a rectangular garden bed. Those measurements follow you between the tools. Work out how much soil is still needed, choose a mulch layer, lay out plant positions, estimate seed packets and convert a weekly watering target into litres or gallons. Use your product labels and local growing advice for depths, spacing, germination and water needs. The starting values are examples, not crop recommendations. Change units without changing the saved bed, and export the current estimate as a CSV. No account, weather connection or uploaded measurements are required.

Assumptions and limitations

Use product labels and local growing guidance. Defaults are examples. Assumptions use your inputs, not live weather or crop-specific prescriptions. Volume estimates exclude delivery and tax. Bag quantities round up.

Frequently asked questions

Are my garden measurements uploaded?

No. The tools save your current bed and settings in this browser. Clear this site’s data to remove them.

Does switching units change the result?

No. Dimensions stay in metres internally. Imperial views use feet and inches, cubic feet for bags and US gallons for water.

Are the defaults recommendations for my plants?

No. They are worked examples. Use product labels, crop requirements, soil moisture and local growing guidance.