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Calcimator

Lap Time Predictor

Project your optimal lap time based on sector-by-sector improvements and current tire condition. Useful for analyzing practice sessions and setting realistic race targets.

Inputs

sec
sec
sec
sec

Results

Predicted Lap Time

89.89 sec

Total Improvement0.65 sec
Tire Adjustment0.54 sec
Consistency Target0.27 sec
How to Use This Calculator
  1. Enter Current Lap Time, Sector 1 Improvement, and Sector 2 Improvement.
  2. Set Sector 3 Improvement and Tire Condition.
  3. Review the Predicted Lap Time (sec) result.
  4. Use Total Improvement (sec) and Tire Adjustment (sec) to inform your decision.

How the result changes with Current Lap Time

Current Lap TimePredicted Lap Time
6968.76 sec
217217.65 sec
394395.71 sec
541543.59 sec

What each input means

Current Lap Time
Your current best or average lap time in seconds. Use your most recent representative lap.
Sector 1 Improvement
Expected time gain in sector 1 based on data analysis or coaching feedback.
Sector 2 Improvement
Expected time gain in sector 2. Compare your splits against the theoretical best.
Sector 3 Improvement
Expected time gain in sector 3. Focus on corner exit speed onto straights.
Tire Condition
Rate tire condition from 1 (worn out) to 10 (fresh). Worn tires add up to 3% to lap time.

What each result means

Predicted Lap Time
Your projected lap time after all improvements and tire adjustment.
Total Improvement
Combined time gained across all three sectors.
Tire Adjustment
Time added due to tire wear. Fresh tires (10) add zero penalty.
Consistency Target
Aim for lap-to-lap variation within this window (0.3% of predicted time).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Current Lap Time = 90, Sector 1 Improvement = 0.2, Sector 2 Improvement = 0.3, Sector 3 Improvement = 0.15 = 5 input(s) provided
  2. Calculate Predicted Lap Time
    Predicted Lap Time
    89.886 = 89.886
  3. Calculate Total Improvement
    Total Improvement
    0.65 = 0.65
  4. Calculate Tire Adjustment
    Tire Adjustment
    0.54 = 0.54

Engine last updated . Checked against 1 independently-derived test — how we verify calculators.

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