1. Choose one currency
Use Coins for all four fields or Gems for all four fields. Do not combine currencies. Read your current balance and target cost in game, because this site deliberately does not publish values it cannot verify.
Train Crash Simulator session calculator
Measure one ordinary run in your current scenario, then estimate how many whole runs and minutes remain before a chosen target. No live price or payout is assumed.
Your observations
Enter one repeatable run
Estimate
Runs and time remaining
Remaining: 1,000
Whole runs: 10
Estimated time: 50 minutes
This is arithmetic, not a game database. It does not know live prices, boosts, mission rewards, Coins-versus-Gems rules, or transfer behavior. Re-measure after an update and keep one currency in each calculation.
2. Measure a normal run
Use the same train, mission type, route, and boost state you expect to repeat. Record the balance difference and elapsed minutes. A highlight crash or one-time reward is a poor baseline.
3. Recalculate after changes
Mission payouts, event boosts, engine choice, and scenario length can change the observation. Update the two run fields whenever your setup changes instead of treating the estimate as a permanent game rate.
Worked example
If a player has 250 units of one currency, chooses a 1,000-unit target, and observes 125 units in a six-minute run, the gap is 750. Six whole runs cover that gap, so the estimate is 36 minutes. This example demonstrates the formula only; it is not a claim about an in-game item or reward.