Free Online Tools

Simple, fast utilities that run entirely in your browser.

Korea Salary Calculator

Calculate your monthly take-home pay in Korea after insurance and taxes.

Pick random numbers in any range, with or without duplicates.

Generate random lottery number sets, like 6 out of 45.

Count the days between two dates, or add and subtract days from a date.

Calculate X% of a number, ratios, and percentage change.

Count characters, words, and lines in real time.

Convert length, weight, and temperature units instantly.

Work out your exact age in years, months, and days.

Calculate your body mass index and healthy weight range.

Create strong random passwords instantly.

A simple countdown timer with an alarm sound.

Measure elapsed time precisely, with lap times.