Back to Tools

Specific Impulse Converter

Loading author...

Convert specific impulse values between seconds, meters per second, feet per second, and kilometers per second. Specific impulse is a key metric for evaluating rocket engine efficiency.

Quick Reference

Conversion Results

Performance Category

Good Performance
LOX/RP-1, LOX/LH2, Most bipropellants
Seconds
350.0 s
Standard unit
Effective Exhaust Velocity
3,432.3 m/s
Meters per second
Feet per Second
11,260.9 ft/s
Imperial velocity
Kilometers per Second
3.432 km/s
High-speed units

Additional Calculations

Thrust per Mass Flow
3,432.3 N/(kg/s)
Input Value
350.000 seconds

Open Source and Easy to Use Elsewhere

This tool is open source and the underlying logic is fully transparent. You can inspect the code, understand the calculations, and contribute improvements. If you want to use the tool in your own website, course page, or learning platform, you can also embed it directly and start from a ready-made iframe setup for this exact tool.

Open source: review the implementation and see how the results are produced.

Embeddable: preview this tool, copy the iframe, and use it in your own site or LMS.