Everyday Calculators
Handy calculators for daily life. Work out your exact age, split a bill, find a discount or count the days between two dates — fast and free.
About Everyday Calculators
Everyday calculators are the ones you reach for without planning to: splitting a restaurant bill, checking whether a sale price is actually a bargain, working out exactly how old someone is, or counting the days until a deadline. Nothing here needs specialist knowledge, and none of it is worth opening a spreadsheet for. The age calculator gives an exact age in years, months and days from a date of birth, which is handy for forms and eligibility rules. The tip calculator handles the bill split at the end of a meal, and the discount calculator tells you what you actually pay and actually save once a percentage comes off.
Picking between them is mostly about whether your question is about time, money or movement. For time questions, the date difference calculator counts between two dates, while the countdown timer and time zone converter deal with the present rather than a span, and the sleep calculator works backwards from when you need to be awake. For money questions, the unit price calculator is the honest answer to which pack is cheaper, and the fuel cost calculator and electricity cost calculator estimate the running costs people usually guess at. For anything involving distance and time, the pace and speed calculators cover running, cycling and driving, and the aspect ratio calculator handles screens and images.
Like the rest of our calculators, these all run entirely inside your browser. Nothing you enter is uploaded to us, there is no account to create and no charge to use them. The limits are worth being plain about. Cost tools such as fuel and electricity depend completely on the price and consumption figures you supply, so they are estimates that are only as good as your inputs, and real bills include standing charges and tariff bands we do not know about. Date tools follow standard calendar rules but cannot account for a specific organisation's cut-offs or working-day conventions. Use these results as quick, practical answers rather than official figures.
Frequently asked questions
Do I need an account to use these?
No. Everything in this category is free and works immediately, with no sign-up and no install.
Is my information private?
Yes. These calculators run in your browser, so dates, prices and other details you enter are never sent to our server or stored by us.
How accurate is the fuel or electricity cost estimate?
It is only as accurate as the numbers you enter. Real bills also include standing charges, tariff bands and taxes that vary by supplier and region, so treat the result as a rough estimate rather than a bill.
Does the age calculator handle leap years?
Yes. It follows standard calendar rules, including leap years, when working out the exact number of years, months and days between two dates.