tree dayEVERYDAY TOOLS
A few numbers. Better everyday decisions.
Estimate household electricity use and garden rainfall with simple transparent calculators.
ENERGY, MADE VISIBLE
What does that appliance use?
Estimate electricity for one appliance. Actual consumption varies with operating cycles and settings.
kWh
Watts × hours per day × days ÷ 1,000. This is energy use, not a bill estimate.
RAIN IN YOUR PATCH
How much rain fell on your garden?
Turn rainfall depth into a volume over an area. The result is total rain falling, not water collected or absorbed.
litres
Rainfall in millimetres × area in square metres. One millimetre over one square metre equals one litre. Runoff, interception and evaporation change how much reaches the soil.