Everyday Utility Calculators
Quick day-to-day tools — work out your age, count hours, split a bill, estimate concrete or generate a strong password.
Tools & checkers
All calculators →Age Calculator
Exact age in years, months and days from a date of birth.
Start checkDate Difference Calculator
Days, weeks, months and years between two dates.
Start checkHours Calculator
Hours and minutes between a start and end time.
Start checkTime Card Calculator
Weekly hours worked with break deductions.
Start checkGPA Calculator
GPA from grades and credit hours (US 4.0 scale).
Start checkTip Calculator
Tip amount and per-person split for any bill.
Start checkFuel Cost Calculator
Trip cost from distance, MPG and fuel price (UK).
Start checkConcrete Calculator
Cubic metres of concrete needed for a slab.
Start checkSquare Footage Calculator
Area in m² and ft² from length × width.
Start checkPassword Generator
Strong random passwords with custom length and character sets.
Start checkPopular questions
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