Terms of Use

Nothing on this site is financial, tax, or investment advice. The calculators perform arithmetic on inputs you provide. Their output is not a recommendation to enter, exit, or size any position. Trading carries risk; you are solely responsible for your decisions. Sutekka and its operators accept no liability for losses arising from use of any tool on this site.

Calculators are deterministic — same inputs produce the same outputs every time. They use industry-standard formulas documented in each tool's FAQ. We've tested these formulas against textbook references, but you should sanity-check any result you intend to act on. Bugs are possible; report them to hello@sutekka.io.

The ES/SPY/SPX and NQ/QQQ/NDX converters auto-fill from delayed market quotes (~15 minutes via Yahoo Finance, proxied through sutekka.io). Delayed data is provided as-is for convenience; do not rely on it for execution-quality pricing. The ratio and value fields are editable so you can override with whatever your broker shows.

Don't scrape the site to rehost the calculators elsewhere. Don't use the embedded quotes endpoint as a general market-data API. Rate limits apply; abuse may be blocked without notice.

Logos and company symbols belong to their respective owners. Market data is provided by Yahoo Finance under their terms. Logos used in the marketing footer are provided by Elbstream.

We may update these terms; the "Last updated" date at the top reflects the current version. Continuing to use the site after a change constitutes acceptance.

If you have an account at sutekka.io, the terms covering that service are here.