Gann Calculator

The Online Gann Calculator enables traders and analysts to compute Gann angles and fans from historical price and date inputs. It applies core Gann concepts to derive a scalable price-time grid, enabling transparent evaluation of potential support and resistance lines. Users provide a base date and base price, along with the analysis window or data series, to initialize the chart scale and angle set.
It supports common angle ratios such as 1x1, 2x1, and 1x2, plus optional custom ratios for advanced testing. Outputs include the angle grid, predicted price levels at specified dates, and a compact summary of zone implications to inform chart construction and decision-making.
Conceptually, the tool maps elapsed time to price movement using geometric slopes. It does not fetch live prices but uses the provided data to construct lines from the base point and extend them across the selected period. This helps traders compare different angle strategies quickly.
Unique value lies in combining strict input validation, multiple angle sets, and easy export options with a domain-focused interpretation of Gann lines. Use cases include planning breakout points, assessing swing highs and lows, and validating chart patterns against time-driven targets.
Core features include: multi-angle calculation, time-enabled price targets, CSV/JSON exports, and a concise summary of zones. The tool is suited for risk-informed decision-making and academic testing of Gann-based hypotheses. It also supports backtesting against historical windows by allowing users to specify end dates and generate comparative angle sets side-by-side.