Chance of at least one hit
For a target chance p and n rerolls, the chance is 1 − (1 − p)n. A 1% race over 100 rerolls is about 63%.
Estimate your chance of rolling a target race before spending Race Rerolls. The calculator shows your hit chance, rough average rerolls, and how many rerolls it takes to reach 50% and 90% probability under the selected rate assumption.
Change the target race, the reroll count, or the assumed chance. This makes uncertainty visible instead of pretending every rate is official.
Stellar Ambassador is a known conflict: some player guides report 4%, others report 5%. Keep both assumptions until a race menu screenshot proves the correct value.
The calculator uses simple independent-roll probability.
For a target chance p and n rerolls, the chance is 1 − (1 − p)n. A 1% race over 100 rerolls is about 63%.
A 90% chance still fails 1 time in 10. Decide what tier you will keep before spending every reroll.
Use this table to see which numbers are planning assumptions and which need a screenshot.
| Race | Assumed rate | Player note | Planning note |
|---|---|---|---|
| Thestrals / Night Knight | 1% | Player-shared by players | Very expensive to chase; use 50% and 90% milestones. |
| Stellar Ambassador | 4% / 5% | Mixed reports | Keep both options in the dropdown until proven. |
| Death Eater / Undead / Werewolf | 3.33% | Player-shared by players | Practical mid-tier targets. |
| Elf / Tree Spirit | 7.5% | Player-shared by players | Easy to hit but not ideal endgame chase. |
| Human | 25% | Player-shared by players | Common fallback, usually not worth keeping if you have rerolls. |
Use working reroll codes first, then test disputed codes separately.
Examples using the current calculator logic.
20 rerolls gives about an 18% chance at a 1% race. That is a long shot, not a plan.
You need about 69 rerolls to make a 1% target roughly coin-flip likely.
A 90% chance for a 1% race takes around 230 rerolls. Most F2P players should stop earlier.
Common questions about race odds and reroll planning.
It applies 1 − (1 − p)n to estimate the chance of hitting a selected race at least once after a chosen number of rerolls.
No. Exact official race odds still need in-game screenshot, especially Stellar Ambassador.
About 69 rerolls for a 50% chance and 230 for a 90% chance, assuming the rate is truly 1%.
No. Redeem codes first, run the calculator, pick a stop-rule, and keep a few rerolls in reserve for updates.
The Wizard Alchemy Reroll Calculator is most useful when you treat it as a spending guide, not a guarantee.
Redeem Wizard Alchemy codes before buying or grinding more Race Rerolls. Free rerolls make testing your luck safer.
If you roll a useful combat race and your reroll count is low, keeping it can be smarter than chasing a 1% race.
If the calculator shows a low chance, improve your wand, potions, and farming route instead of spending every reroll.
For a player, the best result is not always the rarest race. The best result is a race, wand, potion, and route that let you clear the next Wizard Alchemy boss or event faster.
Use the Wizard Alchemy Reroll Calculator before spending free rerolls from codes, especially if you are chasing a rare race.
| Your situation | Calculator setting | Player advice |
|---|---|---|
| You have 5 rerolls from TREASURE. | Set rerolls to 5 and choose your target race. | If the chance is low, accept a useful mid-tier race and keep farming. |
| You want a 1% race. | Use the 1% assumption. | Expect many misses. Do not plan your whole build around hitting it today. |
| You rolled a decent race early. | Compare the odds of improving it. | If the upgrade chance is small, spend time on wands, potions, and bosses instead. |
| Players disagree on a rate. | Try both rate assumptions. | Use the lower estimate for safer planning until a race menu screenshot proves the number. |
The calculator is not a magic answer. It helps Wizard Alchemy players avoid emotional rerolling. If the odds look bad, stop rolling, claim new codes later, and upgrade the parts of your build that are under your control.
The safest way to use rerolls is to decide your stop point before clicking the button.
For example, a player with five rerolls from a code should not expect a guaranteed rare race. Use the Wizard Alchemy Reroll Calculator to check the odds, then decide whether a good mid-tier race is enough for your current route. If you keep missing, wait for the next Wizard Alchemy codes update instead of spending all progress on one rare target.
A good reroll decision should feel boring, not desperate. Use the Wizard Alchemy Reroll Calculator, set a limit, and stop when the next roll would hurt your progress more than it helps. Save the next attempt for a new codes drop or a better chance to test race rates.
After using the calculator, choose one next step: keep the race and farm, redeem more Wizard Alchemy codes, or wait for better rate information. Do not reroll simply because another player got lucky in fewer attempts.
This keeps the Wizard Alchemy reroll choice tied to your actual build, not only the rarest race name.
Use the video for race context, then use the calculator above for your own reroll count.
Do not spend all rerolls just because one race looks strong in a video. Check your odds first.
If your chance is low, keep a solid race and improve wands or potions. If your chance is reasonable, set a stopping point before you start rolling.
These guides help players act on the calculator result.