How much is Andy Weir Worth? Andy Weir Net Worth in 2026

By the Alux Research Team. How we estimate net worth

Andy Weir’s net worth is estimated at $8 million as of November 2026. His first paid sale was a 99-cent Kindle book, and three months of it earned him roughly $12,000 by our math. The film rights to a later novel fetched $3 million before anyone had read it in a shop, and the film went on to take about $685 million.

Net worth	$8 million (rough estimate, range $4 million to $18 million)
Estimated annual income	About $1.5 million before tax (our assumption, nothing is public)
Born	June 16, 1972, Davis, California (age 54)
Country	United States
Known for	The Martian, Artemis, Project Hail Mary
Main income sources	Book royalties, film rights, producing

How much is Andy Weir worth in 2026?

We estimate $8 million, with a range of $4 million to $18 million. This one is a rough estimate: little of the money is documented. Two payments have a published number, and everything else in the ledger is our assumption, labelled as such.

Public estimates can differ for one big reason: nobody outside the deal knows whether his Project Hail Mary producer credit carries a share of profits. Each point of the film’s worldwide gross equals about $6.85 million, more than the $5 million we credit him for producing. We are not saying he has one. We are saying that two points would come close to doubling the total.

The ledger behind $8 million

Source	Our estimate	What it rests on
Books	$16.5 million	Assumption: 11 million copies across three novels at $1.50 each. No publisher total was available to us. Project Hail Mary had 57 weeks on the New York Times list by July 2026, and the Crown print deal for The Martian was over $100,000.
Film rights	$4 million	$3 million reported for Project Hail Mary, plus $1 million we assume for The Martian option in 2013 and the Artemis rights in 2017. Neither price is public.
Producing Project Hail Mary	$5 million	Assumption. He is a producer, by his own account involved in all the decisions. No fee or profit share has been reported.
Software career savings	$1 million	Assumption, from 25 years as a software engineer, per the AARP interview. Salary is unknown.
Agents and fees	Minus $3.8 million	Assumption: 15 percent of the $25.5 million from books, rights and producing.
Income tax	Minus $8.7 million	Assumption: 40 percent of the remaining $21.7 million.
Living costs	Minus $6 million	Assumption: $500,000 a year for 12 years, from 2014.
Total	$8 million	Heavily assumed. The low end uses $1 a copy and $2 million for producing. The high end uses $2.25 a copy, $5 million in rights and $15 million for producing.

From $12,000 to $3 million

Readers asked for a Kindle edition, so Weir set the lowest price he could. The Martian sold 35,000 copies at 99 cents in three months. That is $34,650 in sales. At Amazon’s 35 percent royalty option, which we assume applied at that price, he made about $12,100 (our calculation).

In 2020 the rights to Project Hail Mary reportedly went for $3 million. That is about 247 times the Kindle money, for a book not yet in stores. Set against the film’s $684.6 million worldwide gross on a $200 million budget, the rights cost was 0.44 percent of the box office, by our math. Studios have made worse purchases.

He kept the day job after the check cleared

March 2013 was a busy month. Crown bought the print rights and Fox optioned the film, two months after an audiobook deal with Podium. He still went to work. Weir told AARP he stayed in programming after the bestseller and the rights sale because he liked the job, leaving only when the next book needed him full-time. His resume runs through AOL, Palm, MobileIron and Blizzard, which fired him in 1995.

The Martian earned $630 million worldwide as a film, per AARP, and on that one Weir says his “only role was to cash the check.” That line explains why we separate the two films. On Project Hail Mary he helped pick the directors and the lead, and he was on set checking the science.

What would move the number

A disclosed profit share would move it most. Next is a sequel: a March 2026 report said he was exploring ideas, with nothing confirmed. The latest documented event tied to his money is the film’s March 20, 2026 release. The 2021 novel was still logging weeks on the bestseller list that July.

Andy Weir net worth FAQ

How much did Andy Weir make from Project Hail Mary?

The film rights reportedly sold for $3 million in 2020. We add an assumed $5 million for producing, and we credit book royalties in a separate row.

How much did Andy Weir make from The Martian film?

The price is not public. We assume $1 million combined for The Martian and Artemis rights, even though the 2015 film grossed $630 million.

Was The Martian self-published?

Yes. It began as a free serial on his website, then sold on Kindle at 99 cents before Crown bought print rights for over $100,000 in 2013.

How old is Andy Weir?

He is 54, born June 16, 1972, and he spent about 25 years as a software engineer before writing full-time.

Will there be a Project Hail Mary sequel?

Nothing is confirmed. A March 2026 report said Weir, who has never written a sequel, was exploring ideas.

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How we estimate net worth

Our estimates are based on public reporting, company valuations, and deal and earnings figures all compiled in an internal valuation model. They are approximate, and figures change over time as new information emerges.

Last updated: November 2026.