SVG Path Length Calculator
Calculate exact SVG stroke path lengths for CSS line-drawing animations.
SVG Formatter
About SVG Path Length Calculator
The SVG Path Length Calculator & Line Animation Helper calculates the exact perimeter length ($L$) in pixels of any SVG vector path, generating CSS `stroke-dasharray` and `stroke-dashoffset` line-drawing animation code.
How to Use SVG Path Length Calculator
Step 1
Paste your SVG path markup or upload an `.svg` file.
Step 2
Inspect the computed total path length in pixels.
Step 3
Adjust animation duration and easing on the live preview.
Step 4
Click "Copy CSS Animation" and apply to your path stroke.
Practical Use Cases for SVG Path Length Calculator
SVG Line Drawing & Self-Tracing Animations
Calculate exact total path length to create self-drawing line animations (such as signatures, logo traces, and progress rings) with pure CSS.
Motion Path Distance & Particle Velocity Physics
Determine exact spline lengths for particle physics and CSS `offset-path` motion animations.
Input & Output Examples
Calculating Path Length for Signature Trace
SVG path of handwritten logo signature
Total Length: 842.64px | CSS Animation: `stroke-dasharray: 843; stroke-dashoffset: 843; animation: draw 2s forwards;`
Key Features & Performance
- ✓Calculates exact total length in pixels using browser native `SVGPathElement.getTotalLength()`.
- ✓Generates ready-to-use CSS line-drawing animation code with `@keyframes draw`.
- ✓Interactive animation speed and loop preview slider.
- ✓Supports complex multi-segment compound paths.
- ✓100% Client-Side calculation.
- ✓1-Click Copy CSS animation.
Key Terminology & Definitions
`stroke-dasharray` & `stroke-dashoffset`
CSS properties used to create line-drawing effects by setting dash lengths equal to the total path length and animating the offset from $L$ to $0$.
`getTotalLength()` API
The W3C SVG DOM method that computes the total length of a path curve in user units.