Business Tools
Invoices, QR codes, signatures, and productivity helpers.
6 tools
Sorted by popularityQR Code Generator
Generate QR codes for URLs, text, WiFi, and more — download as PNG.
Open tool
Password Generator
Generate strong, random passwords with custom length and rules.
Open tool
ROI Calculator
Calculate Return on Investment — net profit, ROI %, and payback period.
Open tool
Profit Margin Calculator
Calculate gross profit margin, net profit margin, and markup percentage.
Open tool
Break-Even Calculator
Calculate how many units you need to sell to cover your costs.
Open tool
Cover Letter Generator
Generate a professional cover letter for any job in seconds using AI.
Open tool
Advertisement
Related categories
Frequently asked questions
Are these business tools really free?
Yes — all tools on UtilDen are 100% free, no credit card, no signup.
Does my data stay private?
Every tool runs inside your browser. Nothing is sent to our servers.
Can I use these tools on mobile?
Absolutely. UtilDen is fully responsive and works great on phones and tablets.
How often are new tools added?
We ship new tools regularly. Bookmark the site or check back often.