Upload video
Choose a clip of one complete serve, up to 5 seconds.
Estimate your
serve speed
Upload a serve video for a speed estimate and technique feedback.
MP4, MOV or WebM · Up to 5 seconds · 50 MB max
The video uploads only when you select Analyze.
How it works
Wait for analysis
Submitted videos enter a queue. Check the status here.
View results
View the estimated speed range and feedback.
Camera angles
Keep your phone fixed outside the court. Film in landscape.
Rear angle
Film from behind the baseline, slightly to one side. Include the full player, contact point and opposite service box.
Side view
Useful for viewing the toss and contact. If only the player is visible, speed may be impossible to estimate.
Framing
Include the full toss, contact and ball flight, and the bounce if possible. Avoid close-ups and keep the ball in frame.
These positions are illustrative and do not guarantee speed accuracy. Clear ball flight and court lines provide more usable information.
Tennis serve speed from phone video
Use a short recording of your serve to get a video-based speed estimate and technique feedback. Keep the camera still and the ball flight and court lines visible so there is enough detail to assess.
How accurate is a video speed estimate?
This is a visual estimate, not a radar measurement. Camera angle, timing and ball visibility affect the result. A speed range is shown only when the video provides enough evidence; some clips cannot support a speed estimate.
What kind of video should I upload?
Use an original-speed MP4, MOV or WebM clip, up to 5 seconds and 50 MB. Include the toss, contact and ball flight. You can trim the clip in your browser before uploading; avoid slow motion, filters and repeated compression.
Will I get a result immediately?
Submitted videos enter a queue for analysis. Results are not immediate and there is no guaranteed turnaround time. You can return to your history to check the status and view the result.
Is servespeed free to try?
Sign in with Google to use one free analysis per account and browser. After that, each analysis uses 10 credits from a one-time credit purchase. Purchases are not subscriptions.