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☰
🔢 Mathematics
💰 Finance
❤️ Health
🔄 Unit Conversion
📅 Date & Time
⚡ Science
🎓 Everyday
🧬 Biology
⚗️ Chemistry
🏗️ Construction
🌱 Ecology
🍳 Food
🏅 Sports
📈 Statistics
💡 Light
💧 Fluids
🧲 Magnetism
☢️ Radiology
🔥 Heat
⚡ Electricity
🛠️ Engineering
📚 Education
📷 Photo & Video
🎵 Music
💻 Tech & Electronics
🌐 Internet & Network
🎮 Video Games
📦 Logistics
🎄 Seasons & Holidays
🌎 Earth & Weather
Developer API
Log in
Sign up free
Gear Ratio
Calculate gear ratio and output speed from tooth counts and input RPM.
Driver Gear Teeth
Driven Gear Teeth
Input Speed (RPM)
⚡ Calculate
↺ Clear