Basic Mathematics Calculators

Whether you are splitting a restaurant bill, checking homework, or converting between number bases, our Basic Mathematics Calculators handle everyday arithmetic so you can focus on what matters. The collection spans 53 free online tools — from a full-featured Percentage Increase Calculator to a lightning-fast Division Calculator and a handy Base Calculator for binary, octal, and hex conversions.

Students use these tools to double-check fraction and decimal work, while professionals rely on the Percentage Difference Calculator for quick data comparisons. Every calculator runs entirely in your browser — no sign-ups, no downloads — and returns results instantly with clear step-by-step breakdowns.

All 53 basic mathematics calculators are completely free, work on any device, and deliver results in milliseconds. Bookmark this page and come back whenever you need a quick answer.