PrismKit計算機電阻計算機電阻計算機在瀏覽器中執行本機複製連結Markdown將電阻色環解碼成電阻值與誤差，或反向輸入數值取得色環。RC 時間常數計算機Get an RC circuit's time constant, charge curve and cutoff frequency, find R for a target cutoff, or an LC circuit's resonant frequency.電池續航計算機Estimate how long a battery lasts from its capacity and the device's average or sleep and active current, and size series and parallel packs.