Life

15 tools

Validate an ID card and extract birth date, gender, age, region, zodiac and constellation.

Convert an amount to standard Chinese capital numerals, precise to jiao/fen with proper rounding.

Detect carrier and number-segment type, validate format, with batch lookup.

Convert between solar and lunar dates both ways, with ganzhi, zodiac and traditional festivals.

Validate a Unified Social Credit Code per GB 32100-2015; parse the registering department and region.

Validate a card number with the Luhn algorithm and detect UnionPay, Visa, Mastercard and more.

Compute take-home pay, social insurance and individual income tax with annual progressive rates, bonus included.

Compare equal-installment vs equal-principal repayment; output monthly payment, total interest and schedule.

Compute days, workdays and months between two dates, with add/subtract.

Convert length, weight, area, volume, temperature, speed, data storage and more online.

Focus/break timer with adjustable duration; start, pause and reset; pure frontend, no login.

Set a target date and show live remaining days, hours, minutes and seconds; track multiple events.

Compute BMI from height and weight, classify underweight/normal/overweight/obese, with healthy range tips.

Spell out numbers in English (integers and decimals up to trillions); handy for invoices and copy.

Convert a date-time from one zone to major world zones; computed locally via Intl, no network.