⌛
🏃
Calculate Race Splits
Add or subtract running, swimming, or cycling lap times for training analysis.
Non é necesario iniciar sesión
Formats: HH:MM:SS (e.g. 01:30:45) or HH:MM (e.g. 02:15)
Result
02:15:30
2h 15m 30s · 8130 seconds total
135.50
minutes
2.258
hours
8,130
seconds
Race Splits tips
🏃
For marathon training, calculate target paces — total time / planned splits.
💡
Sum repeated interval durations to verify your training session totals.
🎯
Use "Time between" for split analysis — how long from mile 13 to mile 20?
Como funciona
1
Entra
Enter your data into the tool above. Everything stays local to your browser.
2
Proceso
The tool processes your data instantly in your browser using JavaScript. No server, no waiting.
3
Descargar
Get your result instantly. Nothing is stored after you leave the page — complete privacy.
Por que usar o noso?
✓Completamente gratuíto, sen custos ocultos, nunca
✓Non se precisa ningunha conta, correo electrónico ou inicio de sesión
✓Os ficheiros nunca saen do teu dispositivo
✓Non hai límites de tamaño de ficheiro
✓Non hai marcas de auga en ningunha saída
Also check out…
⏰🍳🎬🍅
Calculate Work Hours Worked
Add up your hours across the day to log time spent
Cooking Time Math
Combine prep + cook times for recipes, or calculat
Video Timeline Calculations
Add up clip durations to plan a video timeline, or
Calculate Total Focused Time
Sum your Pomodoro sessions to track focused time p