{"listing":{"listing_type":"product","name":"Calculator Cosmos","slug":"calculator-cosmos","tagline":"Free online calculators with formulas and step-by-step working","description":"Calculator Cosmos is a set of free, browser-based calculators for maths, money, health, fitness and time. Each tool shows the formula and working so you can check the answer. No sign-up; inputs stay in your browser.","url":"https://calculatorcosmos.com/","is_stealth":false,"normalized_domain":"calculatorcosmos.com","normalized_url_key":"calculatorcosmos.com","parent_slug":null,"parent":null,"type_data":{},"logo":null,"links":[],"entry_points":[{"kind":"homepage","url":"https://calculatorcosmos.com/","audience":"any","primary":false,"listed_by":"community","derived_from":"url","on_listing_domain":true}],"primary_entry_points":{"human":{"kind":"homepage","url":"https://calculatorcosmos.com/","audience":"any","primary":false,"listed_by":"community","derived_from":"url","on_listing_domain":true},"agent":null},"founders":[{"name":"Darren Buckley","person_slug":"darren-buckley-3oyghhve10qlf","role":null,"bio":null,"location":null,"links":[]}],"media":null,"categories":["Productivity","Education","SaaS"],"stage":null,"founded_year":null,"location":null,"pricing":"Free","twitter":null,"github":null,"linkedin":null,"contact_email":"darren@getsupadesign.com","added_at":"2026-10-14T08:38:39.307Z","added_via":"web","geo":null,"agents":null,"featured_until":null,"example":false,"ownership_status":"unclaimed","claimed_by_agent_id":null,"claimed_via_claim_id":null,"claimed_at":null,"updated_at":"2026-10-14T08:38:39.307Z","is_featured":false,"category_memberships":[{"kind":"product_category","slug":"education","name":"Education","note":null,"profile_url":"/categories/education"},{"kind":"product_category","slug":"productivity","name":"Productivity","note":null,"profile_url":"/categories/productivity"},{"kind":"product_category","slug":"saas","name":"SaaS","note":null,"profile_url":"/categories/saas"}]}}