Calculate resistance for series or parallel combinations. Determine pairs to achieve a target resistance. Compute R1/R2 ratios and voltage divider values. Calculate values for inverting amplifier gain. Save results as CSV files.
by Siu Yuen Ho★ 5.010 ratingsUtilitiesFreeData updated 2026-09-09
Convert units across 16 categories with instant results. Switch between metric, imperial, and other systems. Calculate conversions for length, weight, temperature, and more. Store frequently used values for quick access.
Calculate mortgage payments, estimate closing costs, and determine loan amounts. Input property details and interest rates. Generate reports and save calculations. Share results via email or cloud storage. Sync data across devices.
Calculate for a specific conductor run or determine wire size based on and current carrying capacity. Limits wire size to and NEC ampacity. Supports AWG and KCMIL sizes only.
Calculate loads, voltage drops, and conductor sizes according to NEC codes. Verify compliance for residential and commercial projects. Access code references for 2002–2023 editions. Perform wire sizing, panel scheduling, and circuit calculations.
Decode bands by selecting colors to determine resistance and tolerance. Supports 4-band resistors. Provides accurate calculations. Features a clean interface and works offline.
Calculate of values, increase or decrease values by a percentage, and find the original value before a percentage change. Set custom values, view step-by-step calculations, and save results for future reference.
Calculate electrical values using over 130 circuit calculators. Analyze resistor, capacitor, and inductor values. View component datasheets and circuit diagrams. Convert units and solve Ohm's law problems.
The app calculates unknown values in a voltage divider circuit. It allows users to input three known values and solves for the fourth, displaying current and power.
Calculate electrical series and parallel circuits.
The app calculates resistance, capacitance, and inductance in series and parallel circuits. It supports various units for each electrical property and performs calculations automatically when input values or units change.
Calculate resolutions and aspect ratios by inputting one dimension and a ratio. Adjust ratios with a tap. Save calculated resolutions for future reference. Scale resolutions while maintaining aspect ratio.