What is ToolHaven?
ToolHaven is a free, ad-supported collection of everyday online tools. Whether you need to calculate your BMI, convert kilometers to miles, generate a secure password, or count the words in your essay — we have you covered. No account required. No personal data collected. Just tools that work.
Our Principles
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Privacy First
Everything runs in your browser. We never see your inputs.
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Instant Results
No loading spinners. No server round trips. Just answers.
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Free Forever
All tools are free. We're supported by non-intrusive ads.
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Works Everywhere
Mobile, tablet, desktop — fully responsive on all devices.
Available Tools
✅ BMI Calculator
✅ Age Calculator
✅ Percentage Calculator
✅ Loan / Mortgage Calculator
✅ Calorie (TDEE) Calculator
✅ Tip Calculator
✅ Compound Interest Calculator
✅ Salary & Hourly Pay Calculator
✅ Discount & Sales Tax Calculator
✅ GPA Calculator
✅ Length Converter
✅ Weight Converter
✅ Temperature Converter
✅ Speed Converter
✅ Data Size Converter
✅ Time Zone Converter
✅ Password Generator
✅ QR Code Generator
✅ Lorem Ipsum Generator
✅ UUID Generator
✅ Word & Character Counter
✅ Case Converter
✅ Text Diff Checker
✅ Base64 Encoder/Decoder
✅ Quick Online Notepad (Auto-save)
✅ Random Picker & Sorteador
✅ Text Sorter & Deduplicator
✅ SHA-256 Hash Generator
✅ JSON Formatter & Validator