Swim Golf Score

Compute per-lap SWOLF from seconds plus strokes, for like-for-like lap distances.

Description

SWOLF adds lap duration in seconds to stroke count.

SWOLF adds lap duration in seconds to stroke count. It is most useful for comparable pool lengths and stroke-count conventions.^[1]

Compute per-lap SWOLF from seconds plus strokes, for like-for-like lap distances.

When to use Swim Golf Score

Use this tool to compute per-lap SWOLF from seconds plus strokes, for like-for-like lap distances.

Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.

How to use Swim Golf Score and understand its results

Prepare the measured movement, timing, load or preassigned score requested. Keep protocols, units, paired measurements and caller-selected thresholds consistent.
Enter lapTimesSeconds, strokeCounts using the field table and calculation rules, then run the tool.
Read lapSwolfScores, meanSwolf. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
lapTimesSeconds	Lap times seconds	list of number	Required
strokeCounts	Stroke counts	list of number	Required

Enter nonempty aligned positive lap times and nonnegative safe integer stroke counts. Return ordered lap scores and arithmetic mean.

lapScore=timeSeconds+strokes; mean=Σscores/n

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
lapSwolfScores	Lap swolf scores	list of number
meanSwolf	Mean swolf	number

json

{
  "input": {
    "lapTimesSeconds": [
      30,
      32
    ],
    "strokeCounts": [
      20,
      18
    ]
  },
  "output": {
    "lapSwolfScores": [
      50,
      50
    ],
    "meanSwolf": 50
  }
}

Limitations and assumptions

Pool distance, stroke type and swimming quality are not checked. The mixed-unit score is a convention, not mechanical efficiency.

Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Rowing Drive-to-Recovery Ratio: Calculate rowing drive-to-recovery ratio from the supplied measurements. For a complementary task, use Dolphin Kick Wave Screen: Compare measured dolphin-kick amplitude and frequency with caller-supplied ranges.

References

Swim Golf Score — tool.io

Similar or alternative tools

Rowing Drive-to-Recovery Ratio
Calculate rowing drive-to-recovery ratio from the supplied measurements.
Dolphin Kick Wave Screen
Compare measured dolphin-kick amplitude and frequency with caller-supplied ranges.