Blog
By Siavash Ghanbari · Founder of Emojar
🎯5 Practical Savings Goals and How Much to Save Each Month
Emergency fund, car, home deposit, vacation or a round-number target. Five worked savings plans showing the monthly amount, interest earned and timeline.
Tool GuideCalculatorsFinanceSavings💼5 Salary to Hourly Myths That Skew Your Pay Math
Dividing by 2,080 isn't always right. Five common salary-to-hourly myths, with worked numbers for shorter weeks, unpaid time off and paycheck schedules.
Tool GuideCalculatorsFinanceSalary📐Black Bars, Stretched Faces and Odd Pixel Sizes, Fixed
Letterboxing, squashed exports and blurry thumbnails usually come from one mismatched number. Learn to spot it and work out the size that keeps proportions.
Tool GuideCalculatorsImagesVideo🔥BMR vs TDEE: Which Calorie Number Should You Use?
Your BMR is what you burn at rest; your TDEE is what you burn on a normal day. See how both are estimated and which one to plan meals around.
Tool GuideCalculatorsHealthNutrition📅Counting Days for Deadlines, Notice Periods and Trips
Return windows, notice periods, countdowns and month-end deadlines: real scenarios for counting days between dates and adding time, with worked answers.
Tool GuideCalculatorsDatesPlanning➗Fraction Math for Woodworking: Planning a Shelf Cut List
Tape measures speak in eighths and sixteenths. Walk through a real shelf cut list, adding, multiplying and dividing mixed numbers without a slip.
Tool GuideCalculatorsMathDIY💹How Compound Interest Works, With Real Numbers
Interest on interest, the rule of 72, compounding frequency and why starting early beats saving more later, all explained with worked examples.
Tool GuideCalculatorsFinanceSavings💳How EMI Is Calculated, Month by Month
Your EMI stays the same every month, but the interest inside it keeps shrinking. A step-by-step look at how loan instalments work, with real numbers.
Tool GuideCalculatorsFinanceLoans√How Simplifying Square Roots Works, With Worked Examples
Why does √48 become 4√3? Learn what perfect squares, irrational roots and simplified radicals really are, with worked examples you can check.
Tool GuideCalculatorsMathExplainer🍽️How to Calculate a Tip and Split the Bill Fairly
Pre-tax or post-tax? 15% or 20%? How to handle the leftover cent? A practical guide to tipping math and splitting a restaurant bill between friends.
Tool GuideCalculatorsMoneyHow-to🧪How to Calculate Molar Mass, Step by Step (With Ca(OH)2)
Add up atomic weights by hand, check percent composition and turn grams into moles, using calcium hydroxide and a copper sulfate hydrate.
Tool GuideCalculatorsChemistryMolar Mass⚖️Ideal Body Weight Formulas: Five Myths, Checked With Numbers
Devine, Robinson, Miller and Hamwi give four different answers for the same height. Here is what those formulas were built for and what they can't tell you.
Tool GuideCalculatorsHealthMyths🛒Is the Bigger Pack Cheaper? A Grocery Run in Unit Prices
Coffee in grams and ounces, olive oil in liters and fl oz, paper towels by the roll. Follow one shopping trip and see which pack wins on price per unit.
Tool GuideCalculatorsShoppingMoney📈Margin vs Markup: How the Two Percentages Really Work
Margin and markup use the same profit but divide by different numbers. See how each is calculated, how to convert between them and how discounts eat margin.
Tool GuideCalculatorsBusinessPricing📊Mean vs Median vs Mode: Which Average Should You Use?
The mean, median and mode can tell very different stories about the same numbers. Learn when to use each, plus range and standard deviation, with examples.
Tool GuideCalculatorsMathStatistics📏Navy Body Fat Method: A Tape-Measure Checklist
A 2 cm slip on the waist tape moves a Navy body fat estimate by about 1.5 points. Use this checklist to measure consistently and read the result calmly.
Tool GuideCalculatorsHealthChecklist🌸Ovulation Myths: Day 14, Safe Days and the Fertile Window
Ovulation isn't always on day 14, and the fertile window is about six days long. Five common myths, with worked calendar examples for 21, 28 and 32-day cycles.
Tool GuideCalculatorsHealthFertility⚖️Recipes, Rent and Maps: 6 Everyday Uses for Ratios
Ratios quietly run cooking, cleaning, shared bills and map reading. Six worked examples show which ratio calculation fits each job and the traps to avoid.
Tool GuideCalculatorsMathEveryday🏖️Retirement Projection Checklist: 8 Inputs to Get Right
A retirement estimate is only as good as its inputs. Check these eight, from return and inflation to withdrawal rate, and see how much each moves the result.
Tool GuideCalculatorsFinanceRetirement🏦Shorter or Longer Loan Term? How to Compare the Real Cost
A 30-year loan has a lower payment, a 15-year loan costs far less overall. See the trade-off in real numbers and how to compare loan terms yourself.
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