CourseProfitCalc is an online comparison tool designed to help course creators estimate how much they could earn after platform and payment fees. Its free calculator compares Teachable, Thinkific, and Systeme.io using an audience size, expected conversion rate, course price, and billing preference. Results include estimated monthly sales and revenue, platform fees, plan costs, net monthly profit, and projected annual profit, with a chart showing cumulative earnings over 12 months.

The calculator automatically selects the lowest-cost plan that fits the figures entered. Its estimates account for platform transaction fees, payment processing, and plan prices, which the site says were checked against official pricing pages in July 2026. CourseProfitCalc also provides guidance on choosing conversion-rate assumptions, comparing platform costs, and understanding how sales volume can affect which service is most economical. The site presents its figures as educational estimates, not financial advice, and encourages visitors to confirm current pricing directly with each platform.