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Delta V Calculator
Rocket delta-v from exhaust velocity and mass ratio using the Tsiolkovsky equation.
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Delta-v
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Rocket delta-v from exhaust velocity and mass ratio using the Tsiolkovsky equation.
Delta V Estimator
Enter your numbers below for an instant estimate.
0
💡 Tip: dv = Isp g0 ln(m0/mf).
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Delta Quick Guide
Typical values for reference.
| Isp | m0 kg | mf kg | Delta-v |
|---|---|---|---|
| 350 | 10000 | 3000 | 4,132 m/s |
| 300 | 5000 | 2000 | 2,696 m/s |
| 450 | 100000 | 20000 | 7,102 m/s |
| 250 | 1000 | 700 | 874 m/s |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Delta V Calculator FAQ
Answers to common questions about this calculator.
The change in velocity a rocket can produce.
dv = ve ln(m0 / mf).
About 9,400 m/s including losses.
No, single stage.