If you want to create smooth, professional vector artwork, you must know how to curve a line in Illustrator.
Curved lines make your designs flow naturally, adding elegance and motion to icons, logos, and illustrations.
This tutorial explains three proven methods to curve lines in Adobe Illustrator — step by step, with visuals, shortcuts, and quick tips.
1. Curve a Line in Illustrator with the Anchor Point Tool
The Anchor Point Tool (Shift + C) is the most precise way to curve a straight line in Illustrator.
It gives you full control over how each anchor point bends.
How to curve a line in Illustrator using the Anchor Point Tool
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Draw a straight line with the Pen Tool (P).
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Select the Anchor Point Tool (Shift + C).
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Click and drag directly on your line to create a curve.
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Adjust the direction handles to refine the shape.
Pro tip:
Click on an anchor point again to make it straight if you want to reset the curve.
2. Curve Lines in Illustrator Using the Curvature Tool
The Curvature Tool (Shift + `) helps you curve lines in Illustrator smoothly and naturally — without using direction handles.
It’s a great tool for beginners and for creating organic, flowing shapes.
Steps to make curved lines in Illustrator:
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Select the Curvature Tool.
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Click anywhere on your straight path.
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Drag to bend the line — Illustrator automatically adjusts the curve.
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Move anchor points to fine-tune the shape.
Why use this method:
It’s fast, intuitive, and ideal for shapes like waves, vines, or soft outlines.
3. Edit and Smooth Curves in Illustrator with the Direct Selection Tool
The Direct Selection Tool (A) is perfect for adjusting paths after you’ve already curved a line in Illustrator.
How to adjust curved lines in Illustrator:
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Select the Direct Selection Tool (A).
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Click an anchor point to show its handles.
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Drag the handles outward or inward to reshape the curve.
Best for:
Refining detailed shapes, softening corners, and fixing uneven curves.
Bonus: Create Decorative Curved Lines or Waves in Illustrator
Want to make wavy or artistic lines?
You can easily create curved decorative lines in Illustrator using the Zig Zag effect.
How to make wavy curved lines:
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Go to Effect > Distort & Transform > Zig Zag.
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Check Smooth and adjust Size and Ridges per segment.
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Click OK to apply a wave-like curve.
Quick Tips to Curve a Line in Illustrator Like a Pro
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Line not curving? Use Anchor Point, Curvature, or Direct Selection tools — not the regular Selection Tool.
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Want to curve a shape instead of a line? Go to Effect > Warp > Arc.
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Need thicker curved lines? Adjust Stroke Weight in the Properties or Appearance panel.
Image suggestion:
Compare thin and thick curved lines to visualize the difference.
Related Illustrator Tutorials
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How to Use the Pen Tool in Illustrator
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How to Make Wavy Lines in Illustrator
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How to Smooth Paths in Illustrator
Final Thoughts: Mastering How to Curve a Line in Illustrator
Knowing how to curve a line in Illustrator is a must-have skill for any vector designer.
The Anchor Point Tool gives precision, the Curvature Tool offers smooth flexibility, and the Direct Selection Tool lets you perfect every curve.
Practice each technique — and you’ll soon master the art of creating clean, elegant curved lines in Adobe Illustrator.