Height Converter
Convert centimetres to feet and inches, or feet and inches to centimetres, with a normalized mixed-unit result.
Everyday Tools
Practical planning, home, date and measurement helpers for daily tasks.
Online Ruler
Display a calibrated millimetre or inch ruler on screen.
BMI Calculator
Calculate body mass index from metric height and weight.
Running Pace Calculator
Calculate pace and speed from distance and elapsed minutes.
Time Card Calculator
Calculate paid hours from start, end and break.
Workdays in Month Calculator
Count Monday-to-Friday workdays in a month.
Sleep Duration Calculator
Calculate overnight sleep time between two clock values.
Add Days to Date Calculator
Add or subtract calendar days from a date.
Day of Week Calculator
Find the weekday for any Gregorian date.
ISO Week Number Calculator
Find the ISO week number and week-year for a date.
Birth Year Calculator
Estimate a birth year from current age, a reference date and whether the birthday has occurred.
Hebrew Calendar Converter
Show the proleptic Hebrew calendar date corresponding to a Gregorian date.
Hijri Calendar Converter
Show the Umm al-Qura Hijri date corresponding to a Gregorian date.
Leap Year Calculator
Check whether a Gregorian calendar year is a leap year.
Recipe Scaler
Scale an ingredient amount for a different serving count.
Paint Calculator
Estimate paint litres from wall area, coverage and coats.
Tile Calculator
Estimate tile count including a waste percentage.
Concrete Volume Calculator
Estimate rectangular concrete volume in cubic metres.
Screen PPI Calculator
Calculate display pixel density from resolution and diagonal size.
Aspect Ratio Calculator
Simplify width-to-height ratio and calculate decimal aspect.
Voice Recorder
Record microphone audio locally and download it without uploading the recording.
Screen Recorder
Record a user-selected screen, window or browser tab locally.