Calculate component values for Op Amp, 555, RC Filter, and Resistor Divider circuits. Decode resistor and capacitor codes. Compute power, resistance, current, and voltage using Ohm's Law and Power Calculators.
by Adafruit Industries LLC★ 4.319 ratingsUtilities$2.99Data updated 2026-09-08
Calculate points to identify support and resistance levels for financial instruments. Input high, low, and close prices to determine Resistance 4, Resistance 3, Resistance 2, Resistance 1, , Support 1, Support 2, Support 3, and Support 4 values.
Convert units across , engineering, and everyday categories. Perform calculations with built-in formulas. Save frequently used conversions. Toggle dark mode. Switch between languages. Provide feedback for improvements.
Use as . Type equations to see results instantly. Convert units by writing "198lb to kg". Create named values for reuse. Tap results to copy to clipboard.
The app converts numbers between binary, hexadecimal, octal, and decimal formats. It includes functions for bit shifting, adding one, and subtracting one, with an optimized keyboard for input.
Real-time operator map shows live radio stations worldwide. Tap pins to view station details and call signs. Connect with operators globally, send and receive messages. Track communication history and manage contacts.
Scan for BT-DCPM devices and view measurements including voltage, temperature, battery state of charge, and power relay status. Set alerts for out-of-range values. Connect and configure Bluetooth DC power meter devices.
Convert across 60 categories with 1327 and 53742 conversions. Switch between acceleration, angle, area, and other measurements. Convert cooking , electrical values, and data transfer speeds. Adjust for charge, density, and current.
Calculate taxes with real-time GST rate updates. Input values to compute and GST amounts. Use memory functions M+, M-, MR, MU for financial calculations. Switch between two button layouts for easier navigation.
The app calculates and displays the performance of 74 Continental and 108 Lycoming normally-aspirated engines. It offers a graphic display illustrating manual construction methods for determining altitude performance based on user inputs.
Sound reinforcement and lighting calculations tool.
The app provides 28 calculators and 47 calculations for pro-audio sound reinforcement and lighting. It includes reference information and utilities for PA, sound systems, and lighting acoustics.
The app calculates the refractive index of transparent materials based on wavelength. It also computes light transmission angles, reflection and transmission coefficients, critical angle, and Brewster’s angle.
View Unicode character details including symbol, display character, description, and numeric values in UTF-8, UTF-16, and decimal. Display binary and hex representations. Provide HTML entity format.