Website Cost Calculator. Free web design tools. Learn about hidden fees and how to budget for your business site.A free, interactive tool that builds a custom project estimate in seconds. Pick your project type (landing page, business site, e-commerce, custom web app, or portfolio), set your own base prices, add pages, design complexity, and add-on services — and watch the total update live. Built for freelancers and agencies who want to send fast, transparent quotes, and for clients as well.