Speedrun Split Time & Pace Calculator
Calculate split times, segment pace, time saves, and projected finish time for speedruns.
Fill in your split data and click Calculate.
Formulas Used
Best Possible Time (BPT):
BPT = Σ best_spliti for all i = 1…n
Time Save Available:
Time Save = PB_total − BPT
Segment Delta (Δ):
Δseg,i = current_spliti − pb_spliti (negative = faster)
Cumulative Delta:
Δcum,i = Σ current_splitj − Σ pb_splitj for j = 1…i
Projected Finish (PB Pace Remaining):
Projected = elapsed_time + Σ pb_spliti for i = (completed+1)…n
Projected Finish (Best Remaining):
Projected_best = elapsed_time + Σ best_spliti for i = (completed+1)…n
Pace Ratio:
Pace Ratio = elapsed_time / Σ pb_spliti for i = 1…completed
Pace-Adjusted Projected Finish:
Pace_Adjusted = Pace_Ratio × PB_total
Assumptions & References
- Times can be entered as HH:MM:SS, MM:SS, or SS (seconds only).
- PB Split Time: your personal best time for each individual segment.
- Best Possible Split: the fastest you have ever completed that segment (used for BPT/SoBS).
- Current Run Split: the time you achieved for that segment in the current run (leave blank if not yet completed).
- Elapsed Time: the authoritative timer reading at the last completed split (used for projection accuracy).
- Pace-adjusted projection assumes your current pace ratio (current/PB) holds for the entire run.
- PB-pace projection assumes you will match your PB exactly on all remaining segments.
- Best-remaining projection assumes you achieve your best possible time on all remaining segments.
- Methodology consistent with popular speedrun timing tools (LiveSplit, WSplit).
- Sum of Best Segments (SoBS) equals BPT when each segment's best is tracked independently.