# Distance.Tools > A suite of geospatial tools for calculating distances between locations, including web apps, APIs, and spreadsheet-based bulk processing. ## Docs - [Distance.to Web App](https://www.distance.to): User-friendly tool for calculating airline, driving, and maritime distances between cities or coordinates. Ideal for travel planning and quick comparisons. - [Luftlinie.org Web App](https://www.luftlinie.org): Ein intuitives Tool zur Berechnung von Luftlinien-, Fahr- und Schiffsentfernungen zwischen Städten oder Koordinaten. - [Spreadsheet Tool](https://bulk.distance.to/app/order): Bulk distance calculation tool for XLSX/CSV files. GDPR-compliant, retains data structure, and priced at €0.01 per unique route. - [API Reference (OpenAPI Specs)](https://raw.githubusercontent.com/StephanGeorg/distance.tools-public-docs/main/api/openapi.yaml): OpenAPI 3.0 specification for the Distance API, including endpoints, schemas, and authentication details. - [Developer Portal](https://developers.distance.tools): Account management and onboarding for the Distance API, including migration support from RapidAPI. - [Contact for Custom Solutions](https://docs.distance.tools/get-in-contact): Inquiries for tailored geospatial analysis, private APIs, or specialized geographic tools. ## Contact - Website: https://www.distance.to - Developer Portal: https://developers.distance.tools - Docs: https://docs.distance.tools - API Docs: https://docs.distance.tools/tools/api - API Reference: https://raw.githubusercontent.com/StephanGeorg/distance.tools-public-docs/main/api/openapi.yaml