Converter & Calculator Toolkit

Units, colors, dates, loans and everyday calculators.

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Convert length, weight, volume, area and speed units.

Convert colors between HEX, RGB, HSL and CMYK.

Calculate percentages, percent of a value, and percent change.

Calculate exact age in years, months and days.

Calculate Body Mass Index from height and weight.

Convert a date and time across multiple timezones at once.

Convert between numbers and Roman numerals.

Convert between bytes, KB, MB, GB, TB and their binary equivalents.

Calculate monthly loan payments and total interest.

Calculate the final price after a discount, plus optional tax.

Calculate a tip and split the bill between people.

Calculate the exact time between two dates.