Client Side Tools
6290 tools available
These tools run entirely in your browser. Everything you enter, from text and numbers to images, PDFs, and other files, is processed locally on your device and never uploaded to a server. No sign up or installation needed.
Convert between HTML and Markdown formats. Transform HTML markup to Markdown syntax and vice versa for documentation, content management, and web development.
Encode and decode HTML entities and special characters
Calculate ratio based on the width and height.
Calculate missing dimensions from aspect ratio. Enter a ratio and one dimension to find the other.
Extract links from a given text.
Extract numbers from a given text.
Calculate the age based on the birth date.
Calculate the exact midpoint date between two dates. Shows the middle date, total days between dates, and days from start to midpoint.
Find the date at any percentage point between two dates. Calculate the 25%, 50%, 75% date or any custom percentage between a start and end date.
Calculate the next and previous leap year for any given year
Calculate the number of days between two dates, along with weeks, months, years, hours, minutes, and seconds.
Calculate how long you've been in a relationship. Enter the start date and see the duration in years, months, and days, plus total days, weeks, and months together.
Calculate the recommended tire pressure for your bicycle based on rider weight, bike weight, tire width, and bike type. Get results in PSI, BAR, and kPa.
Identify your zodiac sign based on your birth date (month and day). Displays the astrological sign, symbol, element, and date range.
Calculate how many days you have lived since your birth date, including breakdown by years, months, weeks, hours, minutes, and seconds.
Check if a given year is a leap year. Leap years have 366 days instead of the usual 365 days.
Calculate optimal sleep and wake times based on 90-minute REM sleep cycles for better sleep quality.
Calculate the time remaining until a specific date and time, with live countdown and timezone support
Visualize Polarsteps location data on a map.
Visualize GeoJSON files on an interactive map.
Read QR codes from images.
Generate and visualize audio waveforms with playback controls and customization options.
Calculate entropy of a given string.
Generate MD5 hash from a file.