Overview
What is the Blooket calculator?
The Blooket calculator is a free tool that turns your token balance into exact pack odds. It runs verified drop rates for all 16 Blooket packs and 166 blooks, so you see honest probability before you spend a single token.
It answers the two questions players actually ask. First: what are my chances if I open this pack with the tokens I have. Second: how many packs and tokens does one specific blook take. Most calculators only answer the first.
No login, no download, no account. Every calculation runs in your browser, your token count never leaves your device, and nothing here touches Blooket's servers. Rates are validated to total 100% per pack and are published as an open CC BY 4.0 dataset you can check yourself.
Compare every pack
Which Blooket pack has the best odds?
The Ice Monster Pack has the best Chroma odds at 0.15% combined across 3 Chromas (Ice Slime, Frozen Fossil, Ice Crab). The Medieval Pack has the best Legendary odds at 1.00% for the King.
Every pack below, live and seasonal, with its combined Legendary and Chroma rate, the blooks those rates buy you, and how many packs a 50% shot at the pack's rarest blook actually takes. Click a pack for the full blook-by-blook breakdown, or open the Pack Odds Calculator to turn these rates into a real probability for your token balance.
| Pack | Cost | Legendary % | Chroma % | Legendary blook | Chroma blook(s) | Packs for 50% top chase |
|---|
| Aquatic | 20 tokens | 0.70% | — | Baby Shark, Megalodon | No Chroma | 347 (Megalodon) |
| Bot | 20 tokens | 0.30% | — | Mega Bot | No Chroma | 231 (Mega Bot) |
| Breakfast | 20 tokens | — | — | No Legendary | No Chroma | — |
| Medieval | 20 tokens | 1.00% | — | King | No Chroma | 69 (King) |
| Safari | 20 tokens | 0.50% | 0.02% | Lion | Rainbow Panda | 3,466 (Rainbow Panda) |
| Space | 20 tokens | 0.45% | 0.05% | Astronaut | Colored Astronaut (7 rotate daily) | 1,386 (Colored Astronaut) |
| Wonderland | 20 tokens | 0.30% | — | King of Hearts | No Chroma | 231 (King of Hearts) |
| AutumnSeasonal | 25 tokens | 1.00% | 0.05% | Turkey | Goldfinch | 1,386 (Goldfinch) |
| BlizzardSeasonal | 25 tokens | 1.00% | 0.05% | Santa Claus | Peppermint Bark, Chilly Chameleon | 3,466 (Chilly Chameleon) |
| Bug | 25 tokens | 0.50% | 0.03% | Butterfly | Blue Butterfly | 2,311 (Blue Butterfly) |
| Dino | 25 tokens | 0.30% | — | Tyrannosaurus Rex | No Chroma | 231 (Tyrannosaurus Rex) |
| Ice Monster | 25 tokens | 0.35% | 0.15% | Yeti | Ice Slime, Frozen Fossil, Ice Crab | 3,466 (Ice Crab) |
| Lunch | 25 tokens | 0.65% | 0.04% | Sandwich | Half a Sandwich | 1,733 (Half a Sandwich) |
| Outback | 25 tokens | 0.37% | 0.03% | Sugar Glider | Teal Platypus | 2,311 (Teal Platypus) |
| Pirate | 25 tokens | 0.30% | 0.03% | Captain Blackbeard | Pirate Pufferfish | 2,311 (Pirate Pufferfish) |
| SpookySeasonal | 25 tokens | 0.65% | 0.06% | Ghost | Skeleton Fish, Super Glider | 3,466 (Super Glider) |
Pack counts
How many packs do I need to pull a specific blook?
It depends entirely on the drop rate. The King at 1.00% needs about 69 packs for a 50% chance. The Chilly Chameleon at 0.02% needs about 3,466. Lower rates do not cost a little more — they cost fifty times more.
| Chase | Drop rate | Packs for 50% | Tokens for 50% | Packs for 90% | Tokens for 90% |
|---|
| King (Medieval Pack) | 1.00% | 69 | 1,380 | 230 | 4,600 |
| Megalodon (Aquatic Pack) | 0.20% | 347 | 6,940 | 1,151 | 23,020 |
| Chilly Chameleon (Blizzard Pack) | 0.02% | 3,466 | 86,650 | 11,512 | 287,800 |
Those pack counts come from solving the cumulative probability formula backwards: n = ⌈ln(1 − P) ÷ ln(1 − p)⌉, where p is the drop rate and P is the confidence you want. Put your own target into the Chase Calculator for any blook at 50%, 90% or 99%.
The maths
How does the calculator work out your odds?
It uses cumulative probability, not division. Every live update applies P(at least 1) = 1 − (1 − p)ⁿ, where p is the drop rate and n is how many packs your tokens buy. Each pack is an independent roll, so your total chance climbs with every opening but never reaches 100%.
Division is what most guides get wrong. A 0.02% rate does not mean 3,466packs “guarantees” the pull — it means a 50% chance. Around half of players who open exactly that many get nothing, and a dry streak is the expected outcome rather than broken odds. That is the gambler's fallacy in one line.
Duplicate refund mode never simulates recursive sell-back loops. Each pack ships with a precomputed effective cost — box price minus average sell-back value — which keeps the slider instant and the number reproducible. Full simulation runs separately in a Web Worker at 5,000 iterations and returns aggregates only: expected sell-back, P90 worst case, P10 best case.
Accuracy
How accurate are these Blooket drop rates?
Every pack's rates are validated to total exactly 100% across its 166 tracked blooks, and the whole dataset is published openly so anyone can check the arithmetic instead of trusting a screenshot. Last verified 2026-09-09.
Rotating slots are handled honestly rather than flattened. The SpacePack's Chroma cycles through 7 Colored Astronaut variants with only one live per day, so it is counted once at its true 0.05% rather than stacked 7 times into a rate no player can actually roll. Seasonal packs keep their real rates year-round and carry a Seasonal tag so you know when you can actually spend.
Read the methodology for how each rate is sourced and cross-checked, or download the whole thing from the open dataset as CSV or JSON under CC BY 4.0. Blooket Calculator is an independent fan-made project and is not affiliated with, endorsed by, or operated by Blooket.
Free Blooket tools
Which free Blooket tool should I use?
The main calculator above answers the big question — what your tokens are actually worth in a given pack. The Pack Opening Simulator lets you open unlimited practice packs against the same drop rates, the Chase Calculator converts any target blook into a concrete token budget at 50%, 90%, or 99% confidence, and the ROI Calculator ranks every pack by expected value per token.
Rounding out the set: the Token Converter maps your balance to pack counts, the Blook Value Calculator lists sell values and expected pull costs for all blooks in the library, and the Token Grinder plans the fastest route to your next token goal. Everything is free, runs in your browser, and never touches your Blooket account — see the methodology for how the drop-rate dataset is sourced and validated.
