Free Online Calculators

Investool is an online service providing various free calculators and tools for investment, finance, running, and daily life. You can use over 40 tools including compound interest calculator, loan calculator, lotto generator, running pace calculator, and VDOT analysis for free.

Yes, all Investool online tools are completely free. You can use all features immediately without sign-up or login.

Yes, all Investool tools are built with responsive web design and can be used on all devices including PC, tablet, and smartphone with optimized screens.

We provide various tools including compound interest calculator, loan calculator, apartment/land/retail investment calculators, lotto generator, D-day calculator, BMI calculator, running pace calculator, VDOT analyzer, heart rate zone calculator, timer, and image text extractor.