Free Calculators & Planners — Page 4
Free interactive tools to help you plan your next garden or home project in the UK. Filter by category or by what the calculator works out — each filter combination has its own page you can bookmark or share directly.
Showing 12 of 12 calculators & planners
Shower Water Usage Calculator
Estimate how much water and money your household’s showers use each week.
Electric Heater Running Cost Calculator
Estimate the running cost of an electric heater based on its wattage and how long you run it.
Gas vs Electric Patio Heater Cost Calculator
Compare the annual running cost of a gas patio heater against an electric one, based on your own bottle price, electricity rate and usage.
Room Lighting (Lumens) Calculator
Work out how many lumens and bulbs a room needs based on its size and use.
Pet Bed Size Calculator
Find the right bed size for your dog or cat based on their weight or measurements.
Robot Vacuum Coverage Calculator
Check whether a robot vacuum’s per-charge coverage can clean your whole floor area in one go.
Aquarium Fish Stocking Calculator
Get a rough starting estimate of how many fish your tank can support.
Bath Mat Size Calculator
Find the right size bath mat for the floor space in front of your bath or shower.
Bathroom Mirror Size Calculator
Find the right mirror width to match your vanity or basin.
Bathroom Storage Cabinet Calculator
Find the right bathroom storage capacity for your household size.
Bathroom Vanity Size Calculator
Work out the largest vanity unit that will fit your bathroom wall.
Battery Light Runtime Calculator
Estimate how long a battery-operated light will run for based on its battery capacity.