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All 107 calculators →Savings goals
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$100,000 a Year Is How Much an Hour (and What You Actually Keep)?
$100,000 a year is $48.08 an hour before tax, but a single filer keeps about $34 an hour in 2026 after tax and a 10% 401(k). See where the other $14 goes.
Average and Median Net Worth by Age in the US
The 2025 Fed survey puts median family net worth at $33,000 under 35 and $504,900 at 75 and older. See the averages, home equity and how to compare.
What $100 in 2000 Is Worth Today
What $100 from 2000 and other years buys in 2026 dollars, using official US CPI data, plus what drove prices up and how to protect your savings.
The 4% Rule Explained With Real Numbers
Where the 4% rule came from, how it works year by year, what it assumes, and when a lower or higher withdrawal rate makes sense.
$50,000 a Year Is How Much an Hour?
$50,000 a year works out to about $24.04 an hour before tax. Here is the breakdown by month, week and day, plus take-home pay and a quick conversion table.
The 52-Week Money Challenge: What You End Up With
How the 52-week savings challenge works, the $1,378 you finish with, the reverse and doubled versions, and tips to actually finish it.
What Money Years does
Most money calculators stop at a single number. Ours try to answer the question you actually typed into Google: how long will this take, how much do I need each month, and what happens if I change one thing. Every tool shows the answer as a plain sentence, then the numbers behind it, then a short guide that explains the math and the assumptions in everyday language.
The calculators run entirely in your browser, so the figures you type never leave your device. They work in any currency, because the math of saving, interest and debt is the same in dollars, pounds or euros. Where a tool depends on one country's rules, such as US retirement accounts, we say so on the page.