Catalog of modern online calculators for mathematics, construction, medicine, finance, hobbies, and dozens of other fields. Online calculations are ready to replace dozens of applications, save hours of time, reduce the likelihood of errors, and increase accessibility from any device. Regardless of your qualifications and lifestyle, the 2025 catalog has a calculator for your request.

Want to calculate a percentage of a number, solve quadratic equations, convert units of measurement, calculate the volume of concrete for a foundation, body mass index, or a discount when buying an airplane ticket? Just choose the category you need.

Why Choose an Online Calculator?

No need to download programs or pay for a subscription, everything is in one place and completely free. Accessible on any device. Calculators are regularly updated according to the latest global standards, such as current tax rates, construction norms for 2025, and medical standards.

Online calculator 2025 can analyze your data in seconds to provide personalized recommendations. Financial tools will suggest how to increase income and reduce expenses, culinary tools will select the right ingredient proportions, adjust the recipe for the number of guests at any event, sports tools will help calculate the required calorie intake. Even for hobbies like electronics or gardening, there will be an online assistant. Just three steps and you will get an answer to any question:

Choose a category from the catalog: mathematics, medicine, construction, etc.
Enter the parameters, the service will suggest which data is needed, follow the prompts.
Get the result with graphs, tables, or step-by-step solutions.

Online Calculators 2025: Universal Catalog for Any Tasks