Radian Degree Converter
Convert between radians and degrees instantly. Supports π notation, high precision calculations, and real-time conversion for all your trigonometry needs.
🧮 Angle Converter
Result
Enter a value to convert
📐 Conversion Formula
📊 Common Values
✨ Key Features
Everything you need for angle unit conversions
Bidirectional Conversion
Convert from degrees to radians and vice versa with instant results
π Notation Support
Input and output using π notation like π/2, 3π/4, 2π for exact values
High Precision
Adjustable precision from 2 to 10 decimal places for accurate calculations
Real-time Conversion
Instant conversion as you type with no delays or server requests
One-Click Copy
Copy results to clipboard instantly for use in other applications
Mobile Friendly
Responsive design that works perfectly on all devices and screen sizes
🎯 Perfect For
Discover how different professionals use our radian degree converter
Students & Teachers
Perfect for trigonometry, calculus, and physics classes. Understand angle relationships and solve homework problems with ease.
Programmers & Developers
Essential for graphics programming, game development, and animations where angle calculations are crucial.
Scientists & Researchers
Convert between angle units in physics formulas, astronomy calculations, and scientific research.
Engineers & Architects
Convert angles for structural calculations, mechanical design, and architectural planning projects.
❓ Frequently Asked Questions
Everything you need to know about radian and degree conversion
What are radians and degrees?
Degrees divide a circle into 360 equal parts, while radians are based on the radius of the circle. One radian is the angle when the arc length equals the radius. A full circle is 360° or 2π radians.
How do I convert between radians and degrees?
Use these formulas: Degrees to radians: multiply by π/180. Radians to degrees: multiply by 180/π. For example: 90° × π/180 = π/2 radians, and π/2 × 180/π = 90°.
What is π notation and why use it?
π notation expresses angles as multiples of π (pi ≈ 3.14159). It's more precise for common angles: π/6 (30°), π/4 (45°), π/3 (60°), π/2 (90°), π (180°), 2π (360°). This notation is exact and commonly used in mathematics.
Can I input π expressions directly?
Yes! You can input expressions like π/2, 3π/4, 2π, or even π/6. The calculator recognizes both π and "pi" symbols and evaluates mathematical expressions automatically.
Why are radians used in calculus and programming?
Radians are the "natural" unit for angles because they simplify many mathematical formulas. In calculus, derivatives of trigonometric functions are simpler with radians. Most programming languages use radians in their math functions by default.
⭐ What Users Say
Join thousands of satisfied users who trust our radian degree converter
"This converter is a lifesaver for my calculus class! The π notation feature is incredibly helpful, and I love how it shows both decimal and exact values."
"Perfect for game development! I use this daily for rotation calculations. The high precision and instant conversion make my workflow so much smoother."
"As a physics teacher, I recommend this to all my students. The common values reference and formula display make it an excellent learning tool."
Based on 3,892+ user reviews
Join our community of satisfied users
Calculate sine, cosine, tangent, and inverse trigonometric functions. Supports degrees and radians with high precision. Perfect for students, engineers, and mathematicians.
Calculate percentages easily with our online percentage calculator. Find percentages, percentage increase/decrease, and percentage change. Perfect for students, business, and daily calculations.
Calculate inverse proportions using the inverse rule of three formula. Perfect for time-work calculations, speed-time problems, and efficiency calculations. Easy-to-use online calculator with step-by-step explanations.