BMI and Healthy Weight Calculator
Free adult and child BMI calculator. Enter age, sex, height and weight to view BMI and category. Metric and imperial units; CDC percentiles for children.
Use NowEveryday Lookup Tools
Online Ruler
Online ruler for computer, phone, and tablet screens. Calibrate with a bank card, set two points, and measure in cm, mm, or inches. Touch and full-screen modes.
Use NowKinship Calculator
Online kinship calculator for family relationships and terms of address. Select relatives step by step or search from a known term. View paths and copy results.
Use NowID Number Lookup
Online ID number lookup and parsing tool supporting 18-digit ID number validity checks and automatic conversion of 15-digit legacy ID numbers. Parses date of......
Use NowVehicle Plate Location Lookup
Online vehicle plate location lookup tool. Enter a complete plate or its prefix to identify the province and issuing city, or browse vehicle plate codes by p......
Use NowPostal Code Lookup
Online postal code lookup tool supporting city-to-code and 6-digit code-to-region searches, with browsing by province, city, and district.
Use NowLong-Distance Telephone Area Code Lookup
Online long-distance telephone area code lookup tool supporting bidirectional searches by city name or area code. Covers major cities across China and provid......
Use NowPerpetual Calendar
Online perpetual calendar tool supporting Gregorian and lunar date conversion, lunar dates, heavenly stems and earthly branches, Chinese zodiac, the 24 solar......
Use NowPhone Number Location Lookup
Online phone number location lookup tool for checking the carrier and registered province or city of an 11-digit Chinese mainland mobile number. It supports ......
Use NowSunrise and Sunset Time Lookup
Online sunrise and sunset lookup tool. Select a city and date to get local sunrise and sunset times, daylight duration, solar noon, civil twilight, and golde......
Use NowEveryday Lookup Tools
This collection provides common information lookup functions for daily life. Users can use a phone number, ID number, bank card BIN, postal code, telephone area code, license plate prefix, or region name to find relevant basic information.
What lookup tools are included?
- Phone number lookup: Find the carrier and region associated with a mobile number prefix.
- ID number lookup: Validate the number format and parse basic information.
- Bank card lookup: Use BIN information to identify issuing institutions and related card information.
- Postal code lookup: Find regions by postal code or find postal codes by region.
- Telephone area code lookup: Look up city and long-distance area codes in both directions.
- License plate lookup: Identify provinces and cities from license plate prefixes.
- Administrative division lookup: Look up basic province, city, district, and county information.
When are these tools useful?
They can help with address entry, shipping, phone-number verification, regional information lookup, data organization, and development testing.
About lookup results
Some data may come from built-in databases. Number prefixes, bank card BINs, and administrative divisions can change over time. Results are for reference and should not be used as the sole basis for identity verification, banking services, or vehicle registration.