Free Unit Converter
Convert units instantly with real-time calculations. Support 150+ units across 10 categories.
How to Use This Unit Converter
- Select a category (Temperature, Length, Weight, etc.)
- Choose the "From" unit from the dropdown
- Enter the value you want to convert
- Choose the "To" unit from the dropdown
- See the instant conversion result
- Copy, favorite, or share your conversion
Why Use Our Unit Converter?
- ✅ Real-time conversion (instant results)
- ✅ 150+ units supported across 10 categories
- ✅ Mobile-friendly design
- ✅ No registration required
- ✅ Completely free forever
- ✅ Works offline (PWA)
- ✅ Privacy-focused (no data collection)
- ✅ Currency rates updated hourly
- ✅ Favorites & history features
- ✅ Accurate & reliable formulas
Unit Conversion Categories Explained
🌡️ Temperature
Convert between 3 units including Celsius, Fahrenheit, Kelvin and more.
📏 Length
Convert between 9 units including Millimeter, Centimeter, Meter and more.
⚖️ Weight
Convert between 9 units including Milligram, Gram, Kilogram and more.
💱 Currency
Convert between 12 units including US Dollar, Euro, British Pound and more.
🧪 Volume
Convert between 11 units including Milliliter, Liter, Cubic Meter and more.
🏃 Speed
Convert between 6 units including Meter/Second, Kilometer/Hour, Mile/Hour and more.
📐 Area
Convert between 10 units including Square Millimeter, Square Centimeter, Square Meter and more.
⏱️ Time
Convert between 10 units including Millisecond, Second, Minute and more.
💾 Digital Storage
Convert between 7 units including Bit, Byte, Kilobyte and more.
🌪️ Pressure
Convert between 7 units including Pascal, Kilopascal, Bar and more.
Frequently Asked Questions
Frequently Asked Questions
👨💻 About Author
This universal unit converter has been developed and fact-checked by S. Prakash Yadav and the team at StarAiWeb Consulting. S. Prakash Yadav is an AI, Software Architect, and Full Stack Developer with over 20+ years of experience guiding organizations in transforming ambitious ideas into scalable, cloud-native solutions. His career has focused on building intelligent, LLM-powered applications and architecting robust enterprise platforms.
Professional Credentials: With expertise in Azure OpenAI, LangChain, advanced vector databases (Milvus, FAISS, Pinecone), and modern front-end development with Angular and React, S. Prakash Yadav brings deep technical knowledge to ensure all tools use industry-standard formulas and best practices. View full expert bio and credentials →
Math Verified: All formulas and calculations have been verified by our team of engineers and mathematicians to ensure bank-level accuracy. We regularly audit our tools to maintain the highest standards of precision.
Regular Updates: Our tools are continuously updated to reflect changes in standards and best practices. You can trust that you're getting the most current and accurate conversions available.