Free return on investment (ROI) calculator that helps investors calculate return on investment, investment gain, and annualized ROI rates.

1. Download the ZIP file of this repository.
2. Upload the /roi-calculator-master/ folder to the /wp-content/plugins/ directory.
3. Activate the Return on Investment (ROI) Calculator plugin through the "Plugins" menu in WordPress.

• Add the shortcode [ci_roi_calculator] to your page, post or sidebar.
• Or add the following code: <?php display_ci_roi_calculator(); ?> to your template where you would like the Return on Investment (ROI) Calculator to appear.

1. https://mathjs.org/
2. https://katex.org/
3. https://github.com/aFarkas/lazysizes
4. https://github.com/RobinHerbots/Inputmask
5. https://air-datepicker.com/
6. https://www.chartjs.org/