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๐Ÿงฎ RC time constant & filter cutoff calculator

Drag R and C to see the exponential charge or decay curve animate in real time. Shows time constant ฯ„, cutoff frequency fc, and settle time โ€” for low-pass and high-pass RC filters.

Maddy, co-founder of Little Bird

Need help? We're here for you!

Hi, I'm Maddy. My team and I are ready to help with your order or any questions.