Speedsters Infinite MPH Calculator — Rebirth Planner
Calculate time to reach target MPH in Speedsters Infinite using current speed, gain rate, and session planning for Rebirth milestones.
Using the MPH Calculator
Enter your current MPH, target MPH (Rebirth threshold or personal goal), and estimated MPH gained per minute while actively running with sprint enabled. The calculator outputs approximate minutes and hours needed to reach your target under consistent farming conditions.
Actual rates vary with Title multipliers, code boosts, server lag, and route efficiency. Use estimates from a five-minute test run for your gain-per-minute input. Add permanent +90 MPH from SPEEDSTERS2026 after redeeming at level 100.
Planning Rebirth Sessions
Before Rebirth, calculate whether grinding extra MPH beats purchasing one more Title multiplier with saved Gems. Often a Title purchase reduces total time more than raw running — see Titles guide.
Stack FREEBOST temporary multiplier during the final stretch when above level 200. Read Rebirth guide and mechanics page before resetting.
Frequently Asked Questions
What gain rate should I enter?
Measure MPH after five minutes of uninterrupted sprint running and divide by five.
Does the calculator include code boosts?
Add permanent code MPH to current MPH manually. FREEBOST multiplier requires estimating boosted gain rate separately.