Hi Product Hunt! I'm excited to share CostNest, a project I've been building to make everyday calculations simpler and more accessible. I noticed that many online calculators are either cluttered with ads, difficult to use on mobile devices, or focused on only a small range of use cases. My goal with CostNest was to create a fast, clean, and growing collection of practical calculators that anyone can use for free. Today CostNest includes more than 100 calculators covering finance, vehicle ownership costs, fuel expenses, budgeting, conversions, health metrics, and many other everyday calculations. I've spent a lot of time improving performance, user experience, SEO, and content quality while continuously expanding the library of tools. The goal is to build a trusted resource that helps people make better financial and everyday decisions. I'd love your feedback: • Which calculators do you find most useful? • What tools would you like to see added next? • Any suggestions for improving the experience? Thank you for checking out CostNest and supporting the launch!

CostNest

100+ free calculators for daily life

100+ free calculators for daily life