Garden Calculators
Work out exactly what to buy — no more half-empty bags or a second trip to the garden centre.
Mulch Calculator
How much bark or mulch to cover a border.
Volume needed
0.53 m³
70 litre bags
8
Compost Calculator
Compost to improve a bed or border.
Compost needed
240 litres
50 litre bags
5
Topsoil Calculator
Topsoil volume and approximate weight.
Volume
2.70 m³
Approx. weight
3.78 tonnes
Lawn Seed Calculator
Seed for a new lawn or overseeding.
Lawn area
60.0 m²
Seed needed
2.10 kg
Fence Calculator
Panels and posts for a fence run.
Panels
7
Posts
8
Decking Calculator
Deck boards for your area.
Deck area
12.0 m²
Board rows
21
Linear metres (+10%)
92.4 m
Paving Calculator
Slabs and sand for a patio.
Patio area
12.0 m²
Slabs (+5% waste)
36
Bedding sand
0.96 tonnes
Raised Bed Soil Calculator
Soil mix to fill a raised bed.
Total fill
1152 litres
Topsoil (70%)
806 litres
Compost (30%)
346 litres
Plant Spacing Calculator
How many plants fill your bed.
Rows
3
Plants per row
10
Total plants
30
Water Usage Calculator
Weekly watering for beds and pots.
Litres per week
250 L
9L watering cans
28