YAYA JOURNAL · Yaya Blog
Turn hard problems into
steps you can follow
Practical guides for browser tools, debugging, and productivity — with clear steps, real examples, and reusable checklists.
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Chinese Word Count: Word vs Google Docs
Chinese word count differs in Word, Google Docs, and online tools. This guide maps Hanzi, characters without spaces, and English words to what each app shows.
Base Converter Guide: Binary, Decimal, and Hex
Convert binary, decimal, hexadecimal, and bases 2–36 online. Follow worked examples for FF and 255, common prefixes, negative values, BigInt, and errors.
ROI vs Annualized Return: What to Compare
Learn how ROI and annualized return measure results differently. Use formulas, examples, and a local ROI calculator to compare investment periods clearly.
BMR/TDEE Calculator: Mifflin-St Jeor Guide
Estimate BMR and TDEE with the Mifflin–St Jeor equation. See a worked example, activity factors, input limits, calibration steps, and practical safety notes.
BMI Calculator: Chinese Adult Weight Ranges
Calculate BMI from height and weight with Chinese adult reference ranges. See the formula, worked example, healthy-weight estimate, limits, and next steps.
Standard Deviation Calculator: Which Formula?
Use a standard deviation calculator for population and sample data. Follow a worked example, compare n with n−1, and understand variance and CV limits.
Age Calculator: Years, Days, and Next Birthday
Calculate age in completed years, months, days, and total elapsed days. Learn next-birthday timing, February 29 handling, date intervals, and key limits.
Discount Calculator: Sale Price, Coupon & Tax
Calculate a sale price with percentage discounts, coupons, tax, and quantity. Follow worked examples, calculation order, coupon limits, and checkout caveats.
JSON Diff Checker: Find Changed Fields Online
Compare two JSON files online to find added, removed, and changed fields. Learn diff paths, object key and array order rules, examples, and JSON export limits.