Everyday Calculators
Handy tools for dates, time, school, travel, shopping and the web: quick answers without the clutter.
25 calculators · Formulas shown · Free
Dates & time 9
Age Calculator Exact age in years, months and days, with total weeks, days and the next birthday. Date Calculator Add or subtract days, weeks, months or business days, or find the gap between dates. Hours Calculator Hours and minutes between two times, minus breaks, with decimal hours. Time Calculator Add or subtract hours, minutes and seconds, or add time to a clock time. Time Card Calculator Weekly timesheet with daily totals, overtime over 40 hours and gross pay. Time Zone Calculator Convert a date and time between world time zones, with DST and UTC offsets. Day Counter Days between two dates, with options to include the end date or skip weekends. Time Duration Calculator Exact time between two date-times, broken down and in total hours or minutes. Day of the Week Calculator Weekday for any date, with Zeller's congruence shown step by step.
School 2
Car & travel 4
Fuel Cost Calculator Fuel used and cost of a trip, cost per mile or km, split between passengers. Gas Mileage Calculator Real fuel economy from odometer and fuel, with a fill-up log and cost per mile. Mileage Reimbursement Calculator Business mileage at the 2026 IRS standard rates or HMRC approved mileage rates. Tire Size Calculator Tire dimensions from the size code, with a two-size comparison and speedometer error.
Shopping, sizes & conversions 4
Conversion Calculator Unit converter for 13 quantities, from inches to kWh, GiB and mpg. Tip Calculator Tip and total for a bill, split between people, with pre-tax and round-up options. Shoe Size Conversion US, UK, EU, Japan and Mondopoint shoe sizes from a size or your foot length. Bra Size Calculator Band and cup from two measurements, in US, UK, EU, FR and AU sizes, with sister sizes.
Tools & fun 6
Golf Handicap Calculator Unofficial WHS Handicap Index from your scores, with Course and Playing Handicap. Dice Roller Roll any dice in RPG notation and see the exact odds of each total. Password Generator Random passwords and EFF passphrases made in your browser, with entropy. Love Calculator A playful name compatibility score, just for fun and always the same. Base64 Encoder and Decoder Base64 encode and decode with UTF-8, URL-safe mode and file support. URL Encoder and Decoder Percent-encode and decode text, and split a URL into its parts.
Quick answers for everyday questions
Date and time tools use your browser's calendar and time zone database, including daylight saving changes. Converters and encoders run entirely in your browser, so the text you enter is never sent anywhere. Random results, such as dice rolls and passwords, use your browser's cryptographic random number generator.