About EXP Bank Calculator
What this tool does
EXP Bank Calculator estimates how a gem balance changes when it compounds at a 0.30% daily rate. Enter a starting balance and a duration, target date, or goal amount. The calculator reports the projected balance, profit, growth percentage, income estimates, and the Discord rank thresholds reached by the balance.
How calculations work
The model uses FV = PV × (1 + r)^t. PV is the current gem balance, r is 0.003 per day, and t is the normalized duration in days. The calculator treats a year as 365 days and a month as 30 days. It derives an hourly rate from the daily rate so short durations can be estimated without rounding the whole period to a day.
A local-first calculator
The calculator performs math in your browser. It does not require an account, and the inputs are not sent to an application server. Anonymous usage analytics are loaded separately and are described in the privacy policy. The result is an estimate, so compare it with the rules and balance shown by the EXP Bank service before making a decision.
Public resources
Agents can read the agent guide, use the API docs, or use the browser WebMCP tools exposed on the calculator homepage. Questions and bug reports can be sent through the contact page.