GolfVectorLab
Putting evidence

Putting Distance Calibration

Set a target distance for each practice putt and record how far your ball actually finished. This tool computes signed and absolute leave for every attempt.

Target distanceActual leave distance

Mean absolute leave

no data

TargetActualSigned leaveAbsolute leave

Measured

No complete target-and-leave pairs were entered yet.

Tradeoffs to weigh

  • A signed leave tells you whether you tend to leave putts short or long on average; the absolute leave tells you how far off you typically are either way.
  • Every attempt is retained in the mean, including an unusually good or bad one, rather than excluded as an outlier.

Assumptions

  • Target and actual leave distances are measured the same way (paced off or measured) for every attempt.

Limitations

  • This does not diagnose a stroke or read cause for a miss; it only records target versus actual outcome.
  • A repeatable test protocol (same surface, same starting distance set) makes this evidence more comparable across sessions than an ad hoc one.

Next decision: Putting Dispersion Map

Want to learn more? Build Better Putting Evidence

A simple, repeatable test

Pick a target distance, putt to it, and measure or pace off how far your ball actually finished from the hole. Repeating this across a range of target distances builds a calibration record: how well your sense of distance matches your actual result.

Signed versus absolute leave

A signed leave tells you direction: a positive number means you left the putt long, a negative number means short. The absolute leave strips out direction and tells you only magnitude, how far off you were either way. Looking at both together shows whether you have a consistent bias (mostly long, or mostly short) or just inconsistent distance control in both directions.

Every attempt counts

This tool keeps every recorded attempt in the mean absolute leave, including an unusually good or bad one. A single great putt does not erase a pattern of leaving putts short, and a single terrible putt does not by itself prove a real problem; the full set of attempts is what matters.

What this does not diagnose

This tool does not tell you why a putt missed its target, whether that was a stroke issue, a green-read issue, or a genuine misjudgment of distance. It only records target versus outcome. For a look at leave distances during actual rounds rather than a practice test, see the Lag Putting Analyzer.

Frequently asked questions

What is the difference between signed and absolute leave?

Signed leave tells you direction — positive means long, negative means short. Absolute leave strips out direction and shows only magnitude. Looking at both together reveals whether you have a consistent long or short bias, or just inconsistent distance control both ways.

Does one great or terrible putt get excluded from my average?

No. This tool keeps every recorded attempt in the mean absolute leave. A single great putt does not erase a pattern of leaving putts short, and a single terrible putt does not by itself prove a problem — the full set of attempts is what matters.

Does this tool tell me why a putt missed its target distance?

No. It only records target versus outcome — not whether the miss was a stroke issue, a green-read issue, or a genuine distance misjudgment.