About Online Tools King
Free, fast, mobile-first tools that help small businesses and freelancers get paid and make decisions.
Last updated: 6 June 2026
Online Tools King started with a simple idea: the everyday tools a small business needs — invoices, estimates, receipts, and quick financial calculators — should be free, instant and work beautifully on a phone.
What we believe
- Free to use. Every public tool works without an account.
- Your data is yours. Guest work stays on your device; you choose what to save.
- Global by default. Real multi-currency support, not just USD.
- Fast and calm. No clutter, no friction, no forced sign-ups.
Keep us going
The tools are free and we keep ads light. If they save you time, a small contribution helps us keep building. Have an idea? Send feedback — we read everything.