Blog
By Siavash Ghanbari · Founder of Emojar
🎲Six Probability Myths and the Math That Breaks Them
Does a 1-in-100 chance happen within 100 tries? Do two 50% chances make a sure thing? Six common beliefs about odds, checked with real numbers.
Tool GuideCalculatorsMathProbability🗺️Square Feet to Square Meters Without the Common Mistakes
Why multiplying square feet by 0.3048 gives the wrong answer, plus how to convert room sizes, acres and hectares correctly, with worked examples.
Tool GuideUnitsHomeConversion🏷️Stacked Discounts Explained: A Shopper's Checklist
25% off plus an extra 10% isn't 35% off. Learn how stacked discounts really work, how to work out sale prices, and a checklist for spotting real deals.
Tool GuideCalculatorsShoppingMoney🚫Strikethrough Text on Social Media: 8 Checks Before You Post
Crossed-out prices and jokes work great until they break a character limit or a hashtag. Eight quick checks for using strikethrough text that copies cleanly.
Tool GuideTextSocial mediaChecklist⛽The MPG Illusion: Why 10 to 12 MPG Beats 40 to 50 MPG
Miles per gallon hides where the real fuel savings are. A worked comparison of three car upgrades, plus how to convert mpg, L/100 km and UK gallons correctly.
Tool GuideUnitsCarsMoney⏱️Timesheet Hours Checklist: Breaks, Night Shifts, Decimals
Why 7 hours 45 minutes is 7.75 hours, not 7.45. A practical checklist for calculating shift lengths, unpaid breaks and overnight hours on timesheets.
Tool GuideCalculatorsTimeWork📰Title Case Myths: What to Capitalize in a Headline
Title case doesn't mean capitalizing every word. Six common myths about headline capitalization, the small-word rule, and the edge cases to fix by hand.
Tool GuideTextWritingHeadlines🔧Torque Specs in Nm, lb-ft or kgf·m? A Torque Wrench Walkthrough
Your manual says 110 N·m and your wrench reads lb·ft. How to convert wheel nut, bike and engine torque specs safely, and the 12x and 100x mistakes to avoid.
Tool GuideUnitsCarsDIY🟦Type an API Response in TypeScript From a JSON Sample
A walkthrough of turning a real JSON response into TypeScript interfaces, then fixing the spots a generator can't know about, such as nulls, enums and dates.
Tool GuideDeveloperTypeScriptJSON🙃Upside Down, Mirror or Backwards Text: Which One Do You Need?
Three ways to flip text look alike but behave differently. See real examples of each, which one survives a phone rotation, and when to skip them entirely.
Tool GuideTextUnicodeSocial media🗂️Urgent vs. Important: How to Use the Eisenhower Matrix
How the four quadrants work, how to tell urgent from important, and a worked example that sorts a real to-do list into Do, Schedule, Delegate and Eliminate.
Tool GuideProductivityTime ManagementExplainer🔗URL Decoding Problems: %25, Plus Signs and Malformed Input
Why decoded URLs show %20 twice over, why C++ turns into C, and what 'malformed URI' really means. A troubleshooting guide to percent-decoding.
Tool GuideDeveloperURLsTroubleshooting🔗URL Slug Checklist: Length, Stop Words, Accents and Redirects
A practical checklist for writing URL slugs that read well and stay stable, with real before-and-after examples for accents, symbols, stop words and length.
Tool GuideTextSEOURLs🧪US vs UK Gallons, Cups and Ounces: Which One Do You Have?
A UK gallon is 20% bigger than a US gallon, and a US cup isn't a metric cup. How to tell which volume unit you're dealing with and convert it right.
Tool GuideUnitsCookingConversion🧭User Agent Myths: What Your Browser Really Tells Websites
Why does Chrome say Windows 10 on Windows 11, and why is Safari stuck on macOS 10.15.7? Six user agent myths, plus how Client Hints fill the gaps.
Tool GuideDevice TestsBrowsersPrivacy🆔UUID v4 vs v7: Choosing IDs for Your Database
Random v4 or time-ordered v7? How each UUID is built, what it means for database indexes and privacy, and a quick decision table for picking the right one.
Tool GuideDeveloperUUIDDatabases🏠What a $400,000 Home Really Costs Each Month
A worked mortgage example: principal, interest, property tax, insurance and PMI on a $400,000 home, plus what 10% vs 20% down and $200 extra a month change.
Tool GuideCalculatorsFinanceMortgages🔤What Font Size, Line Height and Line Length Read Best?
Practical starting values for body text size, line height, letter spacing and line length, plus how WCAG contrast thresholds change for large text.
Tool GuideDeveloperTypographyCSS📦What JavaScript Minification Actually Does to Your Code
Compression and mangling explained with real before-and-after Terser output, plus when to turn off name shortening and why minified code isn't secret.
Tool GuideDeveloperJavaScriptPerformance📝What Score Do I Need on My Final? A Worked Example
Walk through a real course gradebook to find your current weighted grade and the exact final exam score you need for an A, B or C, with the formula.
Tool GuideCalculatorsEducationGrades