Once Human Starchrom Calculator: Free Cap & Crate Planner (66,000)

Name: Once Human Starchrom Calculator: Free Cap and Best Crate Planner (66,000 a Month)
Availability: InStock
Author: Axee Davies

The Once Human Starchrom calculator shows how much of the monthly Starchrom cap is unlocked today, how much room you have left, and how many Starchrom Crates you can open right now without losing any to the cap.

Once Human lets you earn up to 66,000 Starchrom a month from normal play, but the cap opens in four phases on the 1st, 8th, 15th and 22nd. Open crates too early and the excess is lost. Enter today’s date and your totals and the tool tells you what to open and what to hold.

Once Human Starchrom calculator for Once Human — How many Starchrom Crates you can open today.

How the Once Human Starchrom Calculator Works

The Once Human Starchrom calculator looks up the cap for the day you enter, subtracts what you have already earned this month, and divides the room that is left by the Starchrom in one crate. That is how many crates you can open safely. Anything above that would push you past the cap, where the game warns you that the amount will exceed the current limit.

Enter the day of the month.
Open the Blueprint screen and enter the Starchrom you have earned this cycle.
Enter how many unopened Starchrom Crates you hold.
Optionally enter a blueprint cost and your wallet to see if you can afford it.
Open the number shown and keep the rest for the next unlock.

Once Human Starchrom calculator cap chart by phase — How the monthly cap unlocks.

Once Human Starchrom Cap by Phase

Phase	Dates	Added this phase	Total cap unlocked
Phase 1	1st to 7th	18,000	18,000
Phase 2	8th to 14th	18,000	36,000
Phase 3	15th to 21st	18,000	54,000
Phase 4	22nd to month end	12,000	66,000

The cap is cumulative. If you earned nothing in the first week, the full 36,000 is still open to you from the 8th. The count resets on the 1st of each month, and unused cap does not carry over.

What Counts Toward the Starchrom Cap

Source	Counts toward the 66,000?
Starchrom Crates from normal play	Yes
Defeating Deviants, gathering, crafting	Yes
Eternaland orders	Yes
Events	No
Battle Pass	No
Blueprint Collection Level rewards	No
Mail and maintenance compensation	No

Since the March 25, 2026 update, the Stellar Stairway and Asterism are gone. Activities that used to pay Asterism and Asterism Crates now pay Starchrom and Starchrom Crates directly, and blueprints are activated on the Blueprint screen with Starchrom. The monthly rules did not change.

Once Human Starchrom calculator chart of capped and uncapped sources — What counts toward the cap.

Why You Cannot Open Starchrom Crates

If a crate will not open, or the game warns you first, you have reached the cap for the current phase. The crate is not bugged and it does not expire when the phase ends. Hold it until the next unlock on the 8th, 15th or 22nd, or until the 1st of next month if you have filled all 66,000.

Check the cap for the current cycle on the Blueprint screen.
Spend event and Battle Pass Starchrom freely. It sits outside the cap.
Each standard Starchrom Crate is worth 500 Starchrom, so 36 crates fill one 18,000 phase.
Use the Once Human Starchrom calculator again on unlock day to see how many crates are now safe.

Deviation Fusion: What Is Known

Deviation Fusion is the other system players plan around. You fuse two parent Deviations at a Fusion Pod, and the result rolls its type and traits from both. Parents are not consumed, but each can only be fused once. Extra materials are consumed and shift the odds. Fusion takes 5 minutes since Version 2.3.6.

NetEase has not published a fusion probability table, so this page does not quote odds. The Fusion Pod shows the exact inheritance chance for your parents and materials before you confirm, and that is the only number to trust. One Fusion Pod is allowed per territory, and fusion does not work in RaidZone.

Once Human Starchrom Calculator Worked Example

It is the 14th. You have earned 34,000 Starchrom this month and hold 10 crates. The Once Human Starchrom calculator shows a 36,000 cap, 2,000 of room and 4 crates to open. Opening all ten would waste 3,000 Starchrom. Change the day to 15 and the cap becomes 54,000, so all ten are safe.

About Once Human

Once Human is a free-to-play open-world survival game from Starry Studio, published by NetEase. It is set in a world warped by Stardust, where players called Metas build territories, fight Deviants and Great Ones, and collect Deviations that work or fight for them.

Starchrom is the currency for weapon and armor blueprints, which carry between seasonal scenarios such as Manibus, The Way of Winter, Prismverse's Clash and Seven Isles of Abyss. The current build is Version 3.1.2.

The Once Human Starchrom calculator on this page is free to use, and we update it when the game changes its numbers.

Official page: Once Human on Steam.

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Frequently Asked Questions

Quick answers about Once Human and the Once Human Starchrom calculator.

What is the Starchrom cap in Once Human?

You can earn up to 66,000 Starchrom a month from normal play. Events, the Battle Pass and Collection Level rewards do not count.

When does the Starchrom cap reset?

It resets on the 1st of each month and unlocks further on the 8th, 15th and 22nd.

Why can't I open Starchrom Crates in Once Human?

You have reached the cap for the current phase. Hold the crates until the next unlock date.

How much Starchrom is in a Starchrom Crate?

A standard Starchrom Crate gives 500 Starchrom.

Is the Once Human Starchrom calculator free?

Yes. It is free, runs in your browser and saves your inputs on your device.

Axee Davies

Axee Davies is the founder of AxeeTech, publishing gaming guides, codes, and Windows how-tos since March 2013. A tech enthusiast for 13+ years — starting with smartphones and Android rooting — he now runs a site that puts out a new guide every day for Roblox players, traders, and Windows users. More about AxeeTech

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