James Duff Net Worth
Source of wealth: Tires, diversified
$4.47B
— today
Live · · Forbes real-time
James Duff's net worth is $4.47 billion as of November 7, 2026, according to Forbes' real-time data, which makes James Duff the 959th richest person in the world.
Made since you opened this page
$0.00⏱ 00:00:00 on this page$23.19 per second · based on net worth growth
Spend James Duff's money →How much does James Duff make per second, hour and day?
Per second
$23.19
Per minute
$1,391
Per hour
$83,484
Per day
$2M
Per week
$14.03M
Per year
$731.8M
Basis: Forbes 2025 World's Billionaires list → Forbes Real-Time Billionaires. How we calculate this
How long it takes James Duff to earn…
- a Big Mac0.26 seconds
- an iPhone 17 Pro Max1.4 minutes
- the median US salary45.4 minutes
- a Tesla Model S Plaid1.1 hours
- an average US home5.0 hours
- a Bugatti9.3 days
- a superyacht149.7 days
How did James Duff get so rich?
James Duff, whose fortune comes from Tires, diversified, has an estimated net worth of $4.47 billion. That ranks 959th on Forbes' live list of the world's billionaires. Citizenship: United States (based in Hattiesburg, Mississippi).
Since April 2025, when Forbes measured it at $3.3 billion, James Duff's fortune has grown by $1.17 billion — an average of $23.19 per second, or $2M per day.
James Duff's net worth was $1.2 billion on Forbes' 2019 list, so it has grown about 3.7x since then.
James Duff net worth history (2019–2026)
| Year | Net worth | Change |
|---|---|---|
| 2026 | $4.5B | +$1.2B |
| 2025 | $3.3B | +$300M |
| 2024 | $3B | +$700M |
| 2023 | $2.3B | +$300M |
| 2022 | $2B | +$600M |
| 2021 | $1.4B | $0 |
| 2020 | $1.4B | +$200M |
| 2019 | $1.2B | — |
Ranked near James Duff
| # | Name | Net worth | Today | Per second | Country |
|---|---|---|---|---|---|
| 956 | Gustav Magnar WitzoeFish farming | $4.48B | −$61.38M(−1.4%) | $23.39/s | Norway |
| 957 | Kenneth DartInvestments | $4.48B | −$223.3M(−4.7%) | −$89.40/s | Belize |
| 958 | John GandelShopping malls | $4.47B | −$4.64M(−0.1%) | $15.31/s | Australia |
| 959 | James DuffTires, diversified | $4.47B | — | $23.19/s | United States |
| 960 | Daniel SundheimHedge funds | $4.46B | — | $36.71/s | United States |
| 961 | Amos Hostetter JrCable television | $4.45B | −$3.13M(−0.1%) | $12.95/s | United States |
| 962 | Thomas DuffTires, diversified | $4.45B | — | $22.84/s | United States |
Compare James Duff with…
James Duff net worth: FAQs
What is James Duff's net worth?
James Duff's net worth is $4.47 billion as of November 7, 2026, according to Forbes' real-time data, which makes James Duff the 959th richest person in the world.
How much does James Duff make per second?
About $23.19 per second. Since April 2025, when Forbes measured it at $3.3 billion, James Duff's fortune has grown by $1.17 billion — an average of $23.19 per second, or $2M per day.
How much does James Duff make a day?
Roughly $2 million per day — that's $83,484 an hour and $1,391 a minute, based on average net worth growth.
How did James Duff make their money?
The main sources of James Duff's wealth are: Tires, diversified. Forbes classifies the fortune as self-made.
How long would it take an average person to earn James Duff's net worth?
A typical full-time US worker earning about $63,128 a year would need roughly 70,843 years to earn James Duff's fortune — without spending a cent.
How old is James Duff?
James Duff is 65 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, 2019–2026.
- Per-second figures are averages. See our methodology.