# Gravitational Time Dilation Calculator dτ = dt·√(1 − 2GM/(rc²)) for Earth, Sun, or custom mass: Schwarzschild radius, dilation factor, and daily/yearly clock lag outside the horizon. > Canonical page: https://elysiatools.com/en/tools/gravitational-time-dilation - **Category:** Science & Education - **Keywords:** gravitational time dilation, schwarzschild metric, event horizon, gps correction, general relativity, equivalence principle ## Overview dτ = dt·√(1 − 2GM/(rc²)) for Earth, Sun, or custom mass: Schwarzschild radius, dilation factor, and daily/yearly clock lag outside the horizon. ## Inputs - **Central body** (select) - **Custom mass (kg)** (number): e.g. 1.989e30 - **Radius from center r (km)** (number): e.g. 26571 ## When to use - Use it when you need to process numeric data content quickly in the browser. - Helpful for science & education workflows that need repeatable inputs and fast results. - Useful when you want to test input and output behavior before integrating the workflow elsewhere. ## How it works - Provide Central body, Custom mass (kg), Radius from center r (km) as input to the tool. - The tool processes the request and returns a text result. - For repeatable workflows, use the API endpoint shown on the page after validating the result interactively. ## Use cases - Process numeric data data during debugging or QA. - Validate expected output before using the API or automation flows. - Compare small variations of input to understand output differences quickly. ## Frequently asked questions ### What does Gravitational Time Dilation Calculator do? Gravitational Time Dilation Calculator helps you process numeric data content online without setting up a separate local script or app. ### When should I use this tool? Use it when you need a quick process workflow, want to verify output, or need a browser-based utility for science & education tasks. ### Can I try this tool with sample data? Yes. Try short representative inputs first, then move to larger or more complex cases once the output looks correct. ### What inputs does Gravitational Time Dilation Calculator accept? Gravitational Time Dilation Calculator accepts Central body, Custom mass (kg), Radius from center r (km). ### Is there an API for Gravitational Time Dilation Calculator? Yes. 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