Splitr
Running Calculator
Pace. Speed.
Distance. Time.
Instantly.
Enter any two values and every other field fills in real time — no submit button, no waiting. The fastest pace calculator on your phone.
The Calculator
Every field connected. Everything instant.
Speed, pace, distance, time — all four fields are live. Change any value and everything else updates before your thumb lifts. Splitr tracks which two values you entered and derives the rest automatically.
- Speed in mph and km/h simultaneously
- Pace in min/mile and min/km side by side
- Time in HH:MM:SS with centisecond precision
- Distance in miles and kilometers
Saved Presets
Your race paces, always ready.
Name and save any combination of values — goal paces, current fitness, race targets. One tap restores everything. Drag to reorder. Rename any time. Syncs across all your devices via iCloud automatically.
- Tap to restore a full saved calculation instantly
- Rename presets inline — long press to edit
- Drag to reorder your preset list
- iCloud sync across iPhone, iPad, and back again
Built for runners
Everything you need, nothing you don’t.
Imperial + Metric
Both unit systems shown simultaneously. No toggle, no settings menu — mph, km/h, min/mile, and min/km all at once.
Smart Parsing
Type "830" and Splitr reads 8:30. Type partial times or bare numbers — the parser figures out what you mean.
Cross-Device Sync
Presets sync automatically over iCloud. Set up your paces once, pick up on any device without lifting a finger.
Haptic Feedback
Subtle taps confirm auto-populated fields and shortcut selections. You feel the calculator working as you type.
Start calculating your next race pace
Free download. No account required. Works offline.