Calculate dates, travel time, shared bills and everyday costs. Choose a tool by the question you need to answer.
Calculate a sale price after one or two successive discounts.
Allocate a full amount in proportion to the time or quantity used.
Calculate a tip and divide the bill plus tip equally among a chosen number of people.
Estimate fuel use and trip cost from distance, consumption and price per litre.
Estimate travel duration from distance, average speed and planned breaks.
Count calendar days between two dates, with an option to include both endpoints.
Add or subtract a chosen number of calendar days from a date.
Find completed years, months and days between a date of birth and a reference date, as well as total elapsed calendar days..
Convert a date and time between two UTC offsets.
Estimate a vehicle value under a constant percentage depreciation assumption.
Enter two names to generate a fictional compatibility score.
Understand the birth details and time conventions needed for a rising sign calculation, with clear limits on interpretation..
Understand what an IQ score represents and why an entertainment quiz cannot replace a standardized assessment..
Check your calculator model, supported program format and installation instructions before adding a game..
English edition: 16 September 2026.