Most washing machine guides talk about brands. This one starts with size — because buying the wrong capacity wastes water, electricity, and money every single week. Here's the short answer: couples and small households need 6–7 kg, a family of 3 needs 7–8 kg, and a family of 4 needs 8–10 kg. But the right washing machine size also depends on how often you wash, what you wash, and how much space you actually have in your bathroom or balcony. This guide breaks it all down for Indian families — capacity in kg by family size, washing machine dimensions in feet so you can measure before you order, and honest recommendations for front-load vs top-load vs semi-automatic. Whether you're a couple in a 2BHK or a family of 4 in a joint household, you'll know exactly which capacity to buy before you add to cart.