# Perp Position Size Calculator

position sizing and risk management tool for perpetual futures trading

Type: project entry

Published: 2026-03-18

[Original page](<https://artlu.ai/project/perp-position-size-calculator>)

[Browse this group](<https://artlu.ai/ai/groups/other.md>)

Parent project: other builds

Recorded status: launched

Updated: 2026-05-20T19:37:39.331Z

Technologies: HTML, CSS, JavaScript, Claude

Tags: trading

## Details

A standalone trading calculator for perpetual futures platforms like Lighter, Hyperliquid, and Tradovate. Enter portfolio size, risk amount, entry price, stop loss, and take profit — the tool instantly calculates position size, margin needed, max loss, R:R ratio, and potential profit. Includes a leverage slider, long/short toggle, and warnings when margin exceeds portfolio. Runs locally in any browser with no internet connection required. Built with Claude in a single session.

## Links

[Site or demo](<https://perp-position-size-calc.netlify.app/>)


Status and dates describe the published record, not a recent test of an external service. Missing details are not inferred. Public links do not imply an open-source licence or permission to reuse material.

[Directory](<https://artlu.ai/llms.txt>)