Here's how much of their wealth Silicon Valley billionaires like Bill Gates and Jack Dorsey are donating to fight the coronavirus

Jack Dorsey said he would donate $1 billion to coronavirus relief.David Becker/Getty Images

• Silicon Valley billionaires are collectively pledging billions of money from their personal fortunes towards relief funds against the devastating impact of the coronavirus.
• The biggest pledge so far has come from Twitter CEO Jack Dorsey, who announced he was donating $1 billion towards a relief fund (roughly 28% of his net worth, according to Dorsey).
• Other execs have pledged hundreds of millions of dollars, but compared to their net worth this may not be as much as it seems.
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As the coronavirus outbreak has spread, tech companies and their executives have hastened to donate medical supplies and cash.

Companies including Facebook, Apple, and Tesla have pledged millions of dollars in the form of both cash and medical resources like masks, protective gear, and ventilators.

Individual executives are also kicking in. Bill Gates, who founded his philanthropic organization the Bill and Melinda Gates Foundation 20 years ago, has been particularly vocal about the crisis, and Twitter CEO Jack Dorsey recently announced he was setting up a $1 billion fund.

But to Silicon Valley billionaires, who make up some of the world's richest individuals, even enormous sums of money can make up only a fraction of their net worth.

Here is a breakdown of how much money four tech billionaires have pledged versus how much their estimated net worth is, per the Bloomberg Billionaires Index.

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