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Your specific task is convert between ias, tas, and mach at altitude. Open the page, drop your input, get the result — typically under a second.
Your goal is calculate aircraft center of gravity from weight and arm data. Same approach: paste in, get the result, move on. No account, no upload.
Both tools live in the same category, so the choice depends on the exact subtask. Airspeed focuses on convert between ias, tas, and mach at altitude; CG Calc focuses on calculate aircraft center of gravity from weight and arm data. Try whichever description matches your goal more closely — they're both free.
Yes — both tools are free for unlimited personal use. The Pro plan unlocks higher limits and batch features but the core functionality stays free forever.
Absolutely. Many users chain multiple tools together — process a file with one, then feed the result into another. Nothing is uploaded, so chaining is essentially instant.
No. Both Airspeed and CG Calc work without signup. We only ask for an email if you decide to subscribe to a paid plan.