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Science
Calculate gear ratios and speeds for planetary (epicyclic) gear sets.
Open Planet GearScience
Reference for the plastic number with minimal polynomial and architectural applications.
Open Plastic NumberYour specific task is calculate gear ratios and speeds for planetary (epicyclic) gear sets. Open the page, drop your input, get the result — typically under a second.
Your goal is reference for the plastic number with minimal polynomial and architectural applications. 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. Planet Gear focuses on calculate gear ratios and speeds for planetary (epicyclic) gear sets; Plastic Number focuses on reference for the plastic number with minimal polynomial and architectural applications. 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 Planet Gear and Plastic Number work without signup. We only ask for an email if you decide to subscribe to a paid plan.