Finance· 5 min read
How much house can I afford on $80,000 a year?
On $80k income, a realistic mortgage target is $250-$280k. Here's how the 28/36 rule actually works, plus three real scenarios.
Read post →Articles
Plain-English breakdowns of the math behind everyday decisions.
Finance· 7 min read
15-Year vs 30-Year Mortgage: Which Actually Costs Less?
A 15-year mortgage saves six figures of interest — but the higher payment trades off cash flow and flexibility. How to pick the right one.
Read post →Finance· 7 min read
The 50/30/20 Budget Rule (With a Calculator)
Senator Warren's simple budgeting framework: 50% needs, 30% wants, 20% savings. Where it works, where it doesn't, and how to adapt it to high-cost cities.
Read post →Health· 6 min read
BMI Isn't Everything — What the Numbers Actually Mean
BMI was invented in the 1830s as a population statistic, not a personal health verdict. Here's how to interpret yours, and what else to measure.
Read post →Finance· 10 min read
First-Time Homebuyer Guide: Every Cost Nobody Warns You About
Down payment and closing costs are just the start. Here are the 14 expenses first-time buyers consistently underestimate, plus how much to budget for each.
Read post →Health· 7 min read
How Many Calories Do I Actually Need? (TDEE Explained)
BMR, TDEE, activity multipliers, and why the calorie labels on your food are probably wrong by 20%. A practical guide to your real daily needs.
Read post →Finance· 8 min read
How Much House Can I Afford on $100k Salary?
The 28/36 rule, what lenders actually check, and why the number they approve you for is almost always more than you should spend.
Read post →Health· 6 min read
How Much Water Should You Drink? (The 8-Glasses Myth)
The 8x8 rule was never based on evidence. Here's what current research actually says about hydration, and a formula that accounts for your body and activity.
Read post →Health· 6 min read
Pregnancy Due Date Calculator: How It's Actually Calculated
Naegele's rule, why due dates are really a range, and what to do when ultrasound dating and LMP dating disagree.
Read post →Finance· 7 min read
The Real Cost of a Car Loan (with Amortization Breakdown)
The sticker price is just the start. Here's what a 72-month auto loan actually costs once you add interest, fees, and the hidden cost of depreciation.
Read post →Finance· 9 min read
Retirement at 60 on $500k: Is It Possible?
The 4% rule, Social Security timing, healthcare before Medicare, and three scenarios for making $500k last 30 years without running out.
Read post →Finance· 6 min read
Salary to Hourly: What Are You Really Making?
Your $75k salary is not $36/hour. After taxes, benefits, commute, and unpaid overtime, most salaried workers earn 20-30% less than the sticker number suggests.
Read post →Finance· 8 min read
Should You Pay Off Your Mortgage Early? (The Break-Even Math)
Paying off a 3% mortgage vs investing in an index fund at 7% looks like a no-brainer — until you factor in risk, liquidity, and sleep-at-night value.
Read post →Finance· 6 min read
Tip Calculator Etiquette Around the World
15% in the US, 0% in Japan, a rounding-up in most of Europe. A country-by-country guide to tipping without offending — and how much to actually leave.
Read post →Finance· 7 min read
Refinance Calculator: When It's Worth It and When It's a Trap
The 1% rule, break-even months, and the fine print on cash-out refis. A practical framework for deciding whether refinancing actually saves you money.
Read post →Finance· 6 min read
Compound Interest Explained: Why Einstein Called It the 8th Wonder
The plain-English version of why $200/month can become $200,000 — and why waiting 10 years to start will cost you more than you think.
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