DEV3 Free Freelance Hourly Rate Calculator — Source Code (React + Tailwind)

Source code of the DEV3 Freelance Hourly Rate Calculator, a calculator that works backwards from target take-home income, expenses, tax, time off and non-billable time to an hourly rate, day rate and project quote.

Free download: sign in to any DEV3 account and click Download ZIP. Try it live: https://dev3.tech/tools/freelance-hourly-rate-calculator shows the finished tool running.

What is in the download

• A standalone Vite + React + TypeScript + Tailwind CSS project: src/tool holds the tool, shared pieces sit beside it
• package.json with exact versions plus a lockfile, so npm ci works
• README.md (run, build, embed in Next.js or plain React) and an MIT LICENSE

What the code does

• Gross-up for tax and business expenses with a profit buffer
• Billable hours after holidays, sick days, vacation and admin time
• Step-by-step explanation of the result
• Project price quote from estimated hours

Tech stack

React 19, TypeScript, Vite, Tailwind CSS 4.

Install and customise

The How to install and How to use tabs list the steps. In short: unzip, npm ci, npm run dev, then copy the tool folder into your own app if you want to embed it.

Good to know

• A browser-only tool: there is no backend or database in the code.