Rideshare Payload Fit Calculator

Compare your integrated payload with provider-confirmed mass, rectangular envelope and center-of-gravity limits.

Your Integrated Payload

Payload mass (kg)Adapter and separation-system mass (kg)Extra planning mass reserve (%) Integrated X width (mm)Integrated Y depth (mm)Integrated Z mounting height (mm) Allow 90° footprint rotation?Extra allowance on each box face (mm)

Include all separation hardware and protrusions in the integrated dimensions. Z is never rotated. The extra per-face allowance reduces each usable dimension by twice the entered allowance.

Provider-Confirmed Limits

Maximum mass for this interface and CG (kg)Reserved rectangular box X (mm)Reserved rectangular box Y (mm)Reserved rectangular box Z (mm)Integrated CG height from mounting plane (mm, optional)Confirmed maximum CG height at this mass (mm, optional)

Use limits confirmed for your actual accommodation and mass-CG combination. A box inside a shaped keep-in volume must be confirmed by the integrator; these fields do not select a commercial port or approve flight.

Optional Price Quote (USD)

Quoted base fee ($)Mass included in base fee (kg)Price for each extra kg ($)

Enter all three quote fields to estimate a price. The estimate uses planning mass including your reserve; provider billing and rounding may differ.

Inputs are processed in this page and cleared when you leave or reload; site analytics remain active. Use general planning values rather than confidential mission or personal information.

Reference: SpaceX Rideshare Payload User’s Guide, version 11, August 2026, sections 2 and 3: accommodation geometry and mass limits depend on the interface and center of gravity. Confirm mission-specific terms through the official booking service.