Online calculator with parentheses, percentages and powers.
X% of a number, percentage of a total and percent change.
Accurate online stopwatch with lap times.
Online countdown timer with an alarm sound.
Work in 25-minute blocks with short breaks.
Days between dates, add days and calculate age.
Length, weight, temperature, volume, area, speed and data.
Convert HEX, RGB and HSL with a color picker and shades.
Add or remove VAT at any rate.
How much to tip and what each person pays.
Monthly mortgage or loan payment and total interest.
Body mass index and healthy weight range.
Counts characters, words, sentences and reading time.
UPPERCASE, lowercase, Title Case and removing accents.
Strong random passwords generated in your browser.
QR code from a link or text, download as PNG or SVG.
Pick random numbers, roll dice and flip a coin.