UTILIDADES
QR generator
Create QR codes for links, WiFi, contacts, events and maps.
OpenEveryday utilities
Calculators, generators and validators with explained results
A calculated or generated result is not always a final decision. These utilities help with specific tasks, while their guides explain which inputs are used, how to interpret the output and when it should be checked against a professional or authoritative source.
UTILIDADES
Giveaways
Choose one or more random winners from a list.
OpenUTILIDADES
Password generator
Generates strong passwords with configurable length and characters.
OpenUTILIDADES
health calculator
Calculate BMI, metabolism, calories, water and body fat.
OpenUTILIDADES
Encode and decode URL
Encodes or decodes special characters in a URL.
OpenUTILIDADES
text encoder
Encode text in Base64, hexadecimal, Morse, ROT13 or JWT.
OpenUTILIDADES
Text decoder
Decodes Base64, hexadecimal, Morse, ROT13 or JWT.
OpenUTILIDADES
Hash generator
Generates SHA-256, MD5 and bcrypt hashes.
OpenUTILIDADES
Hash validator
Checks if a hash corresponds to a text.
OpenUTILIDADES
My IP
Check your public IP and its approximate location.
OpenUTILIDADES
Consulta RDAP
Consulta datos registrales mediante el servicio RDAP autoritativo del TLD.
OpenUTILIDADES
Network tools
Query DNS and diagnose domain resolution.
OpenUTILIDADES
Sitemap validator
Validate the structure of a sitemap from a file or URL.
OpenUTILIDADES
world time
Check the current time by country and time zone.
OpenUTILIDADES
Stopwatch and timer
Time tasks or start a countdown.
OpenUTILIDADES
Fake data generator
Generates dummy data in multiple formats for testing.
OpenUTILIDADES
Valid DNI / NIE / CIF
Generates Spanish identifiers with valid check digits.
OpenUTILIDADES
IBAN Generator
Generates fictional IBANs by country with valid format and checksum for testing.
OpenUTILIDADES
Card generator
Creates dummy card data for validation testing.
OpenUTILIDADES
Period between dates
Calculate the exact duration between two dates.
OpenUTILIDADES
Dismissal calculator
Estimate workers' compensation based on salary and seniority.
OpenUTILIDADES
Interest calculator
Calculate capital, interest and evolution of an investment.
OpenUTILIDADES
tax calculator
Convert amounts with or without taxes using the indicated percentage.
OpenHow to use these utilities
Check the inputs
A wrong decimal separator, time zone or percentage can create output that looks valid but is not useful.
Understand the scope
Health, tax, interest and severance estimates are guidance, not medical, tax, financial or employment advice.
Protect the data
Avoid entering secrets or real personal data when a test can use fictional values, and retain only what is necessary.
Recommended workflow
- 1Read which data and units the tool expects.
- 2Run the operation and inspect warnings, rounding and assumptions.
- 3Check important results against documentation or an authoritative source.