Blog
Tips, guides, and insights about calculators, personal finance, and health metrics.
Markup vs Margin: What's the Difference in Pricing and Profit?
Learn the difference between markup and margin, how to convert one to the other, and why mixing them up can lead to underpricing and weaker profits.
How to Track Work Hours Accurately: Timesheet Tips, FLSA Rules and Mistakes
Learn how to track work hours accurately, avoid common timesheet mistakes, and understand the FLSA rules that affect overtime and payroll records.
How to Calculate Take-Home Pay: Salary, Taxes and Paycheck Deductions
Learn how to calculate take-home pay after federal tax, FICA, state taxes, and paycheck deductions. Includes a practical breakdown and examples.
Reverse Mortgage Guide: How It Works, Costs, Pros and Cons
Learn how a reverse mortgage works, who qualifies, what it costs, common pros and cons, and when a HECM may or may not make sense.
What Is a HELOC? How a Home Equity Line of Credit Works
Learn what a HELOC is, how the draw period and repayment period work, why payment shock happens, and how a HELOC compares with a home equity loan or cash-out refinance.
Compound Interest in Real Life: Credit Cards, Loans, and Retirement Savings
See how compound interest silently drains your wallet through credit card debt and supercharges your retirement savings. Real numbers, real scenarios, real impact.
How to Calculate Home Equity: Formula, LTV and Borrowing Power
Learn how to calculate home equity, what LTV means, how much you may be able to borrow, and practical ways to build equity faster. Includes a free calculator.
Profit Margin Explained: How to Calculate It (and Why It Matters)
Learn what profit margin is, how to calculate gross margin vs markup, and what counts as a good margin—with real examples and a free margin calculator.
How to Calculate Discount: Formula, Examples & Savings Tips
Learn how to calculate discount prices, percentage savings, and total cost with tax. Includes examples, a quick formula, and a free discount calculator.
How to Calculate Overtime Pay: FLSA Rules, Rates & Examples
Learn how overtime pay is calculated under FLSA rules. Covers time-and-a-half, double time, state-specific rules, and exempt vs non-exempt status.
How to Calculate Sales Tax: Formula, Reverse Tax and State-by-State Rates
Learn how to calculate sales tax, reverse tax from a total, and compare state-by-state sales tax rates. Includes a free sales tax calculator.
How to Calculate Days Between Two Dates (Date Math Explained)
Learn how to calculate the number of days, weeks, or months between two dates. Includes age calculation, business days, and a free date calculator.
How to Calculate Your Grade: Final Grade Formula & Examples
Learn how to calculate your current grade, what you need on the final exam, and how weighted grades work. Includes a free grade calculator.
How to Calculate Percentage Increase & Decrease (With Formula)
Learn the percentage change formula, how to calculate percentage increase and decrease, and the difference between percentage change vs percentage difference.
How to Calculate Work Hours for Payroll (With Overtime)
Learn how to calculate work hours from clock-in/out times, handle overtime, and estimate gross pay. Includes a free time card calculator with weekly timesheet.
Calorie Deficit for Weight Loss: How Many Calories Should You Cut?
Learn how calorie deficits work, how to calculate yours, safe deficit levels, and how long it takes to reach your goal weight. Includes a free calorie deficit calculator.
How to Add, Subtract, Multiply & Divide Fractions (With Examples)
Learn how to add fractions with different denominators, multiply and divide fractions, simplify results, and convert between fractions, decimals, and percentages.
Is Your Job Really Worth It? How to Calculate Your True Hourly Rate
Your salary isn't your real pay. Learn how to calculate your true hourly rate by factoring in commute, overtime, and hidden costs. Includes a free worth calculator.
4 Loan Repayment Methods Compared: Which Saves You the Most?
Compare equal payment, equal principal, interest-only, and balloon loan repayment methods side by side. See which one costs the least and fits your situation.
Investing for Beginners: How to Start With Any Amount
A no-jargon guide to investing for complete beginners. Learn about index funds, risk, asset allocation, and how compound growth works. Includes a free investment calculator.
How to Calculate Your Daily Calorie Needs (TDEE Explained)
Learn how to calculate the exact number of calories you need per day using TDEE and BMR formulas. Includes activity multipliers and a free calorie calculator.
Mortgage vs Rent: Which Makes More Financial Sense?
Compare the true cost of buying vs renting a home. Includes hidden costs, break-even analysis, and a free mortgage calculator to run your own numbers.
How Much Should You Tip? Restaurant, Delivery, Hotel and Uber Tipping Guide
Find out how much to tip at restaurants, bars, hotels, for food delivery, and for Uber or Lyft. Includes common tip percentages, etiquette, and a free tip calculator.
How to Calculate GPA: Step-by-Step Guide (With Examples)
Learn how to calculate your GPA on a 4.0 scale, weighted vs unweighted, cumulative GPA, and what's a good GPA for college. Includes a free GPA calculator.
CD vs Savings Account: Which Earns You More Money?
Compare CDs and savings accounts side by side. Learn when each option wins, how CD rates work, and calculate your potential earnings with our free CD calculator.
How Much Concrete Do I Need? A Complete Calculator Guide
Learn how to calculate concrete for slabs, footings, columns, and stairs. Includes waste factor tips, ready-mix vs bags comparison, and a free concrete calculator.
How to Calculate Your Body Fat Percentage (5 Methods Compared)
Learn 5 ways to measure body fat percentage, from free at-home methods to clinical scans. Find out what's a healthy range and try our free body fat calculator.
Compound Interest Explained: Formula, Examples and How Your Money Grows
Understand how compound interest works, how to calculate it, and why time matters so much. Includes the formula, examples, and a free compound interest calculator.
How Long Does Alcohol Stay in Your System? A Complete Guide
Find out how long alcohol stays in your blood, breath, urine, and hair. Learn the factors that affect alcohol metabolism and use our free BAC calculator.
Understanding BMI: What Your Body Mass Index Really Means
Learn how BMI is calculated, what the numbers mean, and why it's just one piece of the health puzzle. Try our free BMI calculator below.