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Free online calculators

Tools for finance, math, physics, geometry and much more. Calculate, convert and browse worked examples directly online, with no installation or registration.

40+calculators
200+conversions and worked examples
7categories
100%free

💰 Finance

Calculate loans and amortization schedules, work out deposit interest and print your Europass CV.

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🧰 Utilities

Convert units of measurement, edit PDFs, generate QR codes and calculate the autonomy of power banks and solar panels.

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🧮 Mathematics

Solve first, second and third degree equations, work through systems with Cramer’s rule and plot the graphs of functions.

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📐 Geometry

Calculate the area and properties of the main plane figures: rectangle, triangle, circle, pentagon, hexagon, rhombus, ellipse and trapezoid.

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⚙️ Engineering

Calculate the moments of inertia of different sections, including square, rectangular, circular, hollow, ring-shaped and double T profiles.

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⚛️ Physics

Calculate force, kinetic and potential energy, and momentum with tools that are easy to consult.

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💚 Health and wellness

Keep track of your nutrition with a monthly calorie tracker.

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Clear tools, understandable results

Calquora brings calculators, converters and practical tools together in one place. When useful, each tool includes formulas, worked examples and explanations of the method, so you can check the results and understand how they were obtained. Guides and worked examples help answer the most common questions about units of measurement and technical calculations.