Jan Koum Net Worth
Source of wealth: WhatsApp
$18.47B
+$16.76M(+0.1%) today
Live · · Forbes real-time
Jan Koum's net worth is $18.47 billion as of November 7, 2026, according to Forbes' real-time data, which makes Jan Koum the 150th richest person in the world.
Made since you opened this page
$0.00⏱ 00:00:00 on this page$38.88 per second · based on net worth growth
Spend Jan Koum's money →How much does Jan Koum make per second, hour and day?
Per second
$38.88
Per minute
$2,333
Per hour
$139,968
Per day
$3.36M
Per week
$23.51M
Per year
$1.23B
Basis: Forbes 2025 World's Billionaires list → Forbes Real-Time Billionaires. How we calculate this
How long it takes Jan Koum to earn…
- a Big Mac0.15 seconds
- an iPhone 17 Pro Max51 seconds
- the median US salary27.1 minutes
- a Tesla Model S Plaid40.7 minutes
- an average US home3.0 hours
- a Bugatti5.6 days
- a superyacht89.3 days
How did Jan Koum get so rich?
Jan Koum, whose fortune comes from WhatsApp, has an estimated net worth of $18.47 billion. That ranks 150th on Forbes' live list of the world's billionaires. Citizenship: United States (based in Atherton, California).
Since April 2025, when Forbes measured it at $16.5 billion, Jan Koum's fortune has grown by $1.97 billion — an average of $38.88 per second, or $3.36M per day.
Jan Koum's net worth was $6.6 billion on Forbes' 2015 list, so it has grown about 2.8x since then.
Jan Koum net worth history (2015–2026)
| Year | Net worth | Change |
|---|---|---|
| 2026 | $17.1B | +$600M |
| 2025 | $16.5B | +$400M |
| 2024 | $16.1B | +$2.4B |
| 2023 | $13.7B | +$3.9B |
| 2022 | $9.8B | −$100M |
| 2021 | $9.9B | +$200M |
| 2020 | $9.7B | +$100M |
| 2019 | $9.6B | +$500M |
| 2018 | $9.1B | +$100M |
| 2017 | $9B | +$400M |
| 2016 | $8.6B | +$2B |
| 2015 | $6.6B | — |
Ranked near Jan Koum
| # | Name | Net worth | Today | Per second | Country |
|---|---|---|---|---|---|
| 147 | Enrique Razon Jr.Ports | $18.6B | −$230.3M(−1.2%) | $152/s | Philippines |
| 148 | Nathan KirshRetail, real estate | $18.6B | +$11.27M(+0.1%) | $224/s | Eswatini (Swaziland) |
| 149 | Marc AndreessenVenture capital investing | $18.53B | −$2.28M(−0.0%) | $329/s | United States |
| 150 | Jan KoumWhatsApp | $18.47B | +$16.76M(+0.1%) | $38.88/s | United States |
| 151 | Ben HorowitzVenture capital investing | $18.12B | — | — | United States |
| 152 | Charlene de Carvalho-Heineken & familyHeineken | $18.03B | −$82.95M(−0.5%) | $71.72/s | Netherlands |
| 153 | Edwin ChenArtificial intelligence | $18B | — | $0/s | United States |
Compare Jan Koum with…
Jan Koum net worth: FAQs
What is Jan Koum's net worth?
Jan Koum's net worth is $18.47 billion as of November 7, 2026, according to Forbes' real-time data, which makes Jan Koum the 150th richest person in the world.
How much does Jan Koum make per second?
About $38.88 per second. Since April 2025, when Forbes measured it at $16.5 billion, Jan Koum's fortune has grown by $1.97 billion — an average of $38.88 per second, or $3.36M per day.
How much does Jan Koum make a day?
Roughly $3.36 million per day — that's $139,968 an hour and $2,333 a minute, based on average net worth growth.
How did Jan Koum make their money?
The main sources of Jan Koum's wealth are: WhatsApp. Forbes classifies the fortune as self-made.
How much did Jan Koum's net worth change today?
Jan Koum's net worth rose by $16.76 million compared with the previous trading day, according to Forbes' real-time estimate on November 7, 2026.
How long would it take an average person to earn Jan Koum's net worth?
A typical full-time US worker earning about $63,128 a year would need roughly 292,506 years to earn Jan Koum's fortune — without spending a cent.
How old is Jan Koum?
Jan Koum is 50 years old and is a citizen of United States.
Sources
- Net worth: Forbes Real-Time Billionaires (source), refreshed every 15 minutes.
- History: Forbes World's Billionaires lists, 2015–2026.
- Per-second figures are averages. See our methodology.