Free Game Balance Calculators & Tools
These are free, interactive calculators for the math behind game balance — XP curves, loot drop probability, currency inflation, difficulty scaling, and more. Every tool runs entirely in your browser (nothing is uploaded or stored), and every result links to the guide that explains the reasoning behind the formula. See the checklists and worksheets for the planning side of this work, or book a free consultation for a second opinion on your specific game.
Calculators
XP Curve Calculator
Model linear, exponential, or logarithmic XP curves and see the full level table.
Difficulty Scaling Calculator
Compare an enemy stat curve against a player power curve across levels.
Probability Calculator
The general "at least one success" math behind loot, gacha, and RNG systems.
Loot Drop Calculator
Drop-rate odds with and without a pity timer, plus expected attempts to first drop.
Soft Currency Inflation Calculator
Project currency supply over time from your faucet and sink rates.
Premium Currency Pricing Helper
Compare two price tiers to see which actually offers better value per dollar.
Game Economy Health Score
A transparent, directional self-assessment heuristic for your economy's balance.
Retention Funnel Planner
Project D1/D7/D30 active users from a cohort size and your own retention rates.
How These Work
Every calculator runs client-side in your browser — no data is sent anywhere, nothing is stored, and no account is required. Each one uses a specific, named formula explained on its page, not a black-box estimate. Where a tool involves a judgment call (like the economy health score), that's stated explicitly rather than presented as a precise industry benchmark.
Want These Numbers Applied to Your Actual Game?
These tools model the general math. Applying it to your specific systems, content cadence, and player data is where a scoped engagement helps most.