Use Brekzy's free online calculators to solve everyday math problems quickly and easily. Calculate percentages, discounts, age, averages, BMI, ratios, and more.
This collection is built around the calculations people actually run into day to day: working out a percentage, comparing prices after a discount, finding an exact age, averaging a set of numbers, checking a BMI, or simplifying a ratio. Each calculator focuses on doing one of these well, rather than trying to be a single do-everything tool.
The full list is shown above — it reflects every calculator currently published in this category, and updates automatically as new ones are added.
Yes. Every calculator on Brekzy is free, with no sign-up required.
No. Every calculator runs directly in your web browser — there's nothing to download or install.
Yes. Every calculator is designed to work comfortably on phones, tablets, and desktop browsers alike.
Each calculator uses the standard formula for what it calculates, applied to the exact numbers you enter. Accuracy depends on entering the correct input values.
Yes. Calculations run client-side in JavaScript on your device — your numbers aren't sent to a server to be calculated.
Yes. Brekzy's calculator collection is actively growing — check back, or revisit this page, to see what's new.
Explore Brekzy's full collection of free calculators, converters, and other tools.