Calculator Type
🌱
Garden Bed
Topsoil, compost and mulch
📦
Planter Box
Timber or steel raised planter
🟩
Turf / Lawn
Turf rolls, seed and underlay
🍂
Mulch
Bark, wood chip, straw or pebble
🪱
Topsoil / Fill
Bulk topsoil, compost or fill
💧
Drip Irrigation
Drip line, fittings and timer
📏
Garden Edging
Steel, timber or concrete edging
🪵
Sleeper Garden Bed
Raised bed built from timber sleepers
Garden Bed
Topsoil, compost and mulch layered over native soil
📐 Area: —
Garden Bed Dimensions
Weed Mat?
Under mulch layer — reduces ongoing maintenance
Drip Irrigation?
Add drip line length estimate
Planter Box Dimensions
💡 The calculator works out timber/steel for the box and the potting mix to fill it.
Liner / Geotextile inside box?
Protects timber and retains moisture
Drainage layer at base?
100mm scoria or gravel before potting mix
Turf / Lawn Area
Starter Fertiliser?
Pre-turfing slow release fertiliser
Turf Staples / Pins?
To hold rolls on slopes — 1 per m²
Mulch Area
Weed Mat?
Under mulch — reduces weeding by 80%
Topsoil / Fill Area
💡 Bulk delivery is usually 30–50% cheaper than bags for anything over 1m³. Minimum truck delivery is typically 3–5 tonnes.
Irrigation Area
Calculate drip line, fittings and accessories for a garden bed or planter. Spacing assumes 300mm between drip lines.
Include Timer / Controller?
Battery or tap-mounted irrigation timer
Include Filter + Pressure Regulator?
Protects drip emitters from sediment and high pressure
Edging Perimeter
💡 Steel edging typically comes in 3m lengths. Timber edging in 3.6m or 4.8m. Concrete mow strip needs formwork and concrete.
Sleeper Garden Bed
Enter the inside dimensions of your raised bed.
Internal Liner?
Geotextile to protect timber and retain soil
Drainage Layer at Base?
100mm scoria or gravel before fill