Tool overview
Uma Race Simulator (Umalator)
Uma Race Simulator (Umalator) official site umaracesimulator.blogUma Race Simulator is a browser-based Umalator reference for Umamusume Pretty Derby players. It lets trainers test race builds, courses, distances, stats, skill combinations, and strategy choices before spending in-game resources, with separate guidance for Global, JP, and Kachi-style variants.
External tool opens in a new tab.
What is this tool?
Run the free Uma Race Simulator (Umalator) for Umamusume Pretty Derby, compare Global and JP/Kachi variants, and test stats, skills, stamina, and race plans in the browser.
Best for
Umamusume players who want to test builds and race plans before committing training resources.
Pricing note
The simulator is presented as free and runs in the browser without installation. Results are estimates based on modeled game mechanics and RNG; compare multiple runs and verify version-specific changes.
Key features
Use cases
Test a new Umamusume build before investing training resources.
Estimate stamina needs and compare skill or strategy combinations for a target race.
Run repeated simulations for Champions Meeting or competitive planning.
Pros
Cons
How to use
Open Uma Race Simulator and choose the Global, JP, or Kachi-oriented workflow relevant to your game version.
Select a course and distance, then choose a character strategy and enter Speed, Stamina, Power, Guts, and Wisdom.
Add skills, inheritance factors, and other build details before starting the simulation.
Run multiple trials and compare win rate, stamina use, final spurt, and placement spread.
FAQ
What is Uma Race Simulator?
It is a free browser simulator for Umamusume Pretty Derby that tests race builds, stats, skills, courses, and strategies before in-game training.
Is the Umalator free to use?
The public simulator is presented as free to use and does not require a software installation or subscription.
Does it support Global and JP versions?
The site provides a Global-first simulator and guidance for JP or Kachi-style variants when a scenario depends on a different version or fork.
How many simulations should I run?
Run 20 to 30 trials for a quick signal and 50 to 100 or more when comparing a high-investment build or preparing for a competitive event.
Can one simulation guarantee a race result?
No. Treat each result as a sample because modeled mechanics and RNG can change outcomes; compare win rate, stamina failures, timing, and placement across repeated runs.
