ToolAstra is a trusted resource for global users looking for fast, accurate, and privacy-friendly online utilities.
Our tools are built for creators, investors, business owners, students, and anyone who values time and transparency.
We offer everything from complex calculators to simple converters — and each tool is regularly updated, independently tested, and 100% free to use.
- Fully client-side: All tools run in your browser for privacy and instant results.
- Original content & guides: Most pages include examples, guides, and FAQs for easier usage.
- Mobile-first design: Every tool works seamlessly on your phone, tablet, or desktop.
- Quick search: Use your browser’s search or the “All Tools” filters to find what you need fast.
- Support & feedback: Found a bug or want something new? Contact us anytime — we reply quickly!
Featured categories: Calculators, Converters, Creators, Text/Dev, AI Shortcuts, Crypto Suite, Media Tools.
Calculators
EMI Calculator
Calculate monthly loan payments for any amount and tenure.GST Calculator
Add/remove GST using latest rates. Made for India.Percentage Calculator
Quickly find % increase, decrease or ratio values for reports and homework.BMI Calculator
Track your Body Mass Index based on global (WHO) standards.Age Calculator
Find exact age in days, months, and years from your birthdate.RPM Earnings Calculator
Convert RPM and views into real ad revenue in USD, USDT and INR.Date Difference
Calculate days, months and years between two dates instantly.AdSense Earnings & RPM Calculator
Estimate daily, monthly and yearly AdSense income using your pageviews, CTR and CPC.SIP Calculator
Plan monthly investments and see total investment, returns and maturity value over time.Compound Interest Calculator
See how a one-time investment grows with compound interest at different rates and durations.Break Even Calculator
Find the units and revenue needed to cover fixed and variable costs for any product or service.Converters & Formatters
Currency Converter
Live forex rates — INR, USD, EUR, GBP, and more.Unit Converter
Convert length, weight, temperature, area and more.JSON Formatter
Beautify, minify, validate JSON safely for devs and writers.URL Encoder / Decoder
Encode URLs for sharing and decode text safely.Base64 Encoder / Decoder
Convert text or files to and from Base64 encoding easily.Online PDF Compressor
Reduce PDF size for email, portals and cloud uploads without losing readability.Image to PDF Converter
Turn JPG/PNG photos and scans into a single, clean multi-page PDF.Media Creators
YouTube Thumbnail Downloader
Download high-resolution thumbnails for YouTube videos.QR Code Generator
Create and save dynamic QR codes for websites, contacts, or payments.Image Compressor
Compress and resize images online for fast uploads.Text to Speech
Convert text to lifelike speech instantly in your browser.Text / Dev Tools
Word Counter
Count words, letters, lines and paragraphs for documents or SEO.Compare Text
See differences between two blocks for editing and revision.Secure Password Generator
Generate strong random passwords with letters, numbers and symbols – fully client-side.AI Shortcuts
Perplexity AI
Launch powerful AI search in a new tab.Claude AI
Use Claude, a smart assistant for writing and insights.Copy AI
AI content and marketing copy creation tools — free access.Notion AI
Note-taking and brainstorming, automated by AI tools.Crypto Suite
Crypto Converter
BTC, ETH, and major coin conversions to INR, USD, EUR — live tickers.Crypto Price Tracker
Follow top coins with auto-refresh live rates.Crypto Profit Calculator
Track P&L, breakeven, and ROI with accurate formulas.ToolAstra is always growing. If you spot an error, want more features, or have a tool request, we want to hear from you! Email support@toolastra.com or use our contact page. Community ideas make the platform better for everyone.
How often do you add new tools?
Usually 2–3 new utilities every month. You can suggest ideas by email or contact form.
Are all tools free and privacy-first?
Yes. All our tools are fully free, work client-side, and never collect personal user data. See Privacy Policy.
What if a tool isn’t working?
Check your browser, update page, or report a bug via Contact — we fix most issues within 48 hrs.
Can I use these tools for business?
Of course — our calculators and converters are used by professionals worldwide. Give credit when sharing.