Free Online Calculators — Percentage, Discount, Age & More
Enter values and get quick results in your browser. The current calculator set covers common general-purpose calculations without requiring an account.
Browse Calculators utilities
Percentage Calculator
Calculate percentages, percentage changes and values from percentages.
Open tool →Calculators utilityDiscount Calculator
Calculate discount amounts and final prices from an original price and discount rate.
Open tool →Calculators utilityTip Calculator
Calculate a tip and split a bill among people.
Open tool →Calculators utilityAge Calculator
Calculate age from a birth date and a target date in your browser.
Open tool →Calculators utilityDate Difference Calculator
Calculate the number of days between two dates.
Open tool →Calculators utilityTime Difference Calculator
Calculate elapsed time between two clock times.
Open tool →Calculators utilityData Size Converter
Convert digital storage sizes between common decimal and binary units.
Open tool →Calculators utilityAspect Ratio Calculator
Calculate proportional dimensions from an aspect ratio and one known dimension.
Open tool →How this collection is organized
Calculators remain a useful discovery surface, but the product roadmap prioritizes search-validated developer and SEO utilities before expanding this catalogue.