Practical calculators and decision tools for everyday choices
What Do I Need? is a collection of online tools designed to help you choose the right kit, setup or product without wasting time or money. Instead of trawling through vague buying guides, conflicting forum posts and endless product lists, you can use these calculators and selectors to narrow down what is actually suitable for your situation.
The site covers a mix of common household problems and specialist interests, including education, home setup, damp and mould control, garden office equipment, power cut preparation, elderly care technology, exotic pet housing, bioactive terrarium planning, worm farming and supermarket wine choices. Each tool is built to give a quick, realistic recommendation based on the information you enter.
Whether you are choosing the right calculator for A level Chemistry, working out what size dehumidifier you need, planning a suitable stick insect enclosure or sorting out a more usable garden office, the aim is the same: clearer decisions, fewer bad purchases and more confidence about what you actually need.
A-Level Chemistry Equipment Guide
Find suitable calculators, approved books and useful study equipment for AQA, OCR and Edexcel Chemistry courses.
Teacher Gift Ideas Finder
Get practical teacher gift suggestions based on budget, occasion and the kind of present that will actually be appreciated.
Dehumidifier Size Calculator
Work out what size dehumidifier you may need for condensation, damp rooms, indoor clothes drying and winter moisture problems.
Power Cut Kit Builder
Plan a sensible blackout kit with lighting, phone charging, heating and basic essentials for short or extended power cuts.
Garden Office Setup Calculator
Choose suitable heating, internet and comfort upgrades for a shed or garden office that is cold, damp or poorly connected.
Elderly Care Technology Guide
Compare practical care technology such as fall detectors, smart displays, reminders and simple companion devices for older relatives.
Bioactive Vivarium Calculator
Plan drainage, substrate depth and clean up crew needs for a bioactive enclosure, terrarium or planted tank setup.
Pet Suitability Quiz
Answer a few straightforward questions to explore which type of pet may suit your space, time, budget and temperament.
Stick Insect Enclosure Calculator
Check the enclosure height and basic housing requirements for common stick insects, leaf insects and larger species.
Exotic Invertebrate Pet Finder
Explore suitable beginner or advanced invertebrate pets, including tarantulas, scorpions and other unusual species.
Worm Farm Setup Calculator
Choose a sensible worm bin size and basic composting setup for kitchen waste, small gardens and indoor composting.
Supermarket Wine Pairing Tool
Get simple wine suggestions based on budget, meal type and UK supermarket shopping rather than vague tasting jargon.