Justility✳ YOUR EVERYDAY BROWSER TOOLBOX
Calculators
on your device
Small tools. All yours.
Calculate everyday units, percentages and calendar dates.
100% freeNo sign-upNo uploads
A LITTLE HELP GOES A LONG WAY
Calculators
Unit converter
Convert standard length, mass, temperature, area, volume, time and data units.
Open toolPercentage calculator
Calculate percentages, percentage change or the original whole.
Open toolDate difference calculator
Count calendar days between dates without daylight-saving shifts.
Open toolAge calculator
Calculate calendar age as of a selected date.
Open toolPrivate comes standard.
Your inputs are processed on your device. No file uploads or processing server. Read our privacy page for information about site analytics.
Open. Use. Done.
No accounts or hoops to jump through. Just useful tools, ready when you are.
Free means free.
No ads, paywalls, or daily allowances. A small corner of the web that keeps it simple.