Everyday Tools calculators
Explore all 11 calculators in the Everyday Tools category — available now, fast and free.
≣Available now 11
About Everyday Tools calculators
This mixed category collects the handy tools that do not fit elsewhere: splitting a bill or a tip, a password generator, word and character counts, colour codes, hashes, air-conditioning BTU sizing, generations, zodiac signs and clothing sizes. Small utilities you reach for often.
Frequently asked questions
How do I split a bill fairly?
Enter the total, the number of people and any tip; the calculator divides it evenly, or by shares when people ordered different amounts.
How much should I tip?
A tip is usually a percentage of the bill before or after tax; enter the total and the rate and the calculator shows the tip and the amount per person.
What BTU air conditioner do I need?
Cooling power depends mainly on room size, but also on sunlight, floor and occupancy. The BTU calculator estimates the capacity a room needs.
How do I create a strong password?
A strong password is long and mixes upper- and lower-case letters, digits and symbols; the generator builds a random one that is hard to guess and easy to copy.