Try the Tennis Stroke Analyzer
Load or record a tennis forehand, backhand or serve and the analyzer detects the stroke. It shows preparation and swing time, peak hitting-hand speed.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Serve A: swing time 0.8 s, contact height 42 cm above shoulder. Serve B (better): 0.7 s and 55 cm.Open the Tennis Stroke Analyzer
Illustration. Open the tool for the real thing.
What is the Tennis Stroke Analyzer?
Load or record a tennis forehand, backhand or serve and the analyzer detects the stroke. It shows preparation and swing time, peak hitting-hand speed, shoulder and hip rotation, knee bend, head stability and contact height, with coaching notes about what to fix.
Step through the stroke in slow motion, view speed and rotation charts, and compare two strokes aligned at the moment of contact.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Preparation, swing and contact.
Hand speed, shoulder–hip separation.
Serve and groundstrokes.
Skeleton overlay.
Side by side.
No upload.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This fitness tool | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Does it measure racket speed?
No. It measures your hand and arm speed; the racket head is faster.
Does it work from any camera angle?
The view does not matter much, because the angles are 3D. Hit at normal pace. The fastest hand movement is detected as the contact point. Film from behind the baseline or from the side, camera at waist height, whole body visible.
Is my video uploaded?
No video leaves your device. Forehand, backhand and serve: speed, rotation, knee bend, compare strokes; the detection runs locally, and nothing is recorded, uploaded or stored unless you choose to save a replay on your own device. Film from behind the baseline or from the side, camera at waist height, whole body visible.
Is it free and private?
Yes: free, no signup, processed in your browser. Forehand, backhand and serve: speed, rotation, knee bend, compare strokes. Your own device keeps whatever is saved. How it works: Film from behind the baseline or from the side. Load clip A or press Record.
How do I use the Tennis Stroke Analyzer?
1. Film from behind the baseline or from the side. 2. Load clip A or press Record. 3. Add clip B to compare. 4. Review the charts and coaching notes.
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Try the Tennis Stroke Analyzer now
Forehand, backhand and serve: speed, rotation, knee bend, compare strokes. Free to use.
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