Educational tool only
PropSize provides mathematical position-sizing helpers and educational articles about prop trading risk. Nothing on this site is investment, trading, tax, or legal advice. Futures, CFDs, and leveraged products involve substantial risk of loss.
No affiliation
PropSize is not affiliated with, endorsed by, or sponsored by Apex Trader Funding, Topstep, FTMO, FundedNext, The5%ers, CME Group, or any other firm or exchange named for illustration.
Accuracy of firm rules
Presets and tables are illustrative and may lag behind official rule changes. Soft daily values are used when a product has no official daily loss limit. You must verify daily loss, max loss, leverage, contract specs, and allowed instruments on the firm’s official site before trading.
Limitation of liability
The site is provided “as is” without warranties. We are not liable for trading losses, failed challenges, or decisions made using calculator output.
Acceptable use
Do not abuse the site (scraping that harms service, injecting malware, or misrepresenting affiliation).