Health check-ins
Use BMI to locate your weight range before and after check-ups.
Everyday Life Utilities
Everyday Utilities, All in One Place
BMI, age, unit conversion, mortgage, dates, and formal amounts — six frequent tasks computed instantly in your browser, with no sign-up and no uploads.
Six Everyday Tools
Results as you type, all computed locally, and fully responsive.
BMI Calculator
Enter height and weight to get your BMI, category, and healthy range under WHO or Chinese standards.
CalculateAge Calculator
Exact age in years, months, and days, plus totals, birthday countdown, weekday, and zodiac signs.
CalculateUnit Converter
Convert length, weight, temperature, area, volume, speed, and data across metric, imperial, and Chinese units.
ConvertLoan & Mortgage Calculator
Compare equal-payment and equal-principal plans with monthly payments, total interest, and a full schedule.
EstimateDate Calculator
Count days, weeks, and business days between dates, or add and subtract years, months, and days.
CalculateRMB Uppercase Converter
Turn amounts into formal Chinese uppercase with correct zero, jiao/fen, and zheng rules for invoices and contracts.
ConvertWhen to Reach for Them
Paperwork
Verify exact ages and formal amounts when filling official forms.
Money planning
Compare repayment plans and terms to see monthly load versus total interest.
Scheduling
Use date differences and business days for leave, projects, and anniversaries.
Frequently Asked Questions
Do I need an account or installation?
No. Every tool opens directly in your browser — no sign-up, no downloads, and nothing uploaded to a server.
Are the results reliable?
Core logic is covered by unit tests: BMI and loan formulas follow standard algorithms, date math handles month lengths and leap years, and the RMB converter follows financial writing rules. For major decisions such as a mortgage, confirm with official or bank figures.
Is my data uploaded?
No. BMI, age, loan, date, and amount calculations all run locally in your browser; inputs never leave your device.
Do they work on mobile?
Yes. All tools use responsive layouts and work well on phones, tablets, and desktop browsers.