Best Rpm Calculator Apps

Camera RPM Meter - StrobeLight

Camera Tachometer - RPM Meter

Free

Measure rotational speed using your phone's camera or a simulated strobe light. Simply mark the rotating object and adjust the settings until it appears stationary to get an accurate RPM reading. The app also functions as a torchlight.

Lathe RPM Calculator

by Slava Barouline

Free

Calculate lathe RPM based on material, designation, and tool type. Supports a wide range of materials and allows for unit changes. Simply input your work diameter to get the RPM value.

Strobe tachometer (RPM meter)

+ Laser Tachometer + Magnetic

Free

Measure rotational speeds of objects using your phone's flashlight, laser, or magnetic sensor. Detect precise RPMs with adjustable flicker frequencies and a wide measurement range. Ideal for analyzing fan speeds, engine RPMs, and more.

Belt & Pulley Calculator

Setup two pulley system

$0.99

Calculate key parameters for a two-pulley system. Input pulley sizes, speed, power, and distance to determine belt velocity, tension, torques, wrap angle, and driven pulley RPM. Supports both imperial and metric units.

Spicer Tool Kit

by Dana Limited

Free

This application provides a range of calculators to help users get the most out of genuine parts, including tools for driveline angle, driveshaft RPM, fuel savings, and more. With just a few taps, users can access crucial information and calculations to optimize their vehicle's performance.

RPM Meter for Turntable

No fuss Tachometer

Free

Easily measure the actual RPM of your turntable with this straightforward tachometer. It provides detailed readings including minimum, maximum, and average RPM, along with percentage discrepancy and wow and flutter measurements.

Giri -The RPM Checker-

by Natural Style Co. Ltd.

Free

This tool measures the rotational speed of motors, ideal for hobbyists working with drivable model cars. It features noise removal, speed conversion, and a memo panel for recording measurements. Customizable skins add a personal touch to the user experience.

CNC Machinist Calculator Ultra

All-in-One Machining Tool

Free

This app provides machinists and engineers with a comprehensive suite of tools for CNC operations. It offers a wide range of calculations for turning, milling, drilling, and more, designed to enhance precision and boost productivity.

Video tachometer

Strobe light effect, RPM meter

Free

This app uses slow-motion video to create a strobe light effect, allowing you to measure rotational speeds. It records video with detailed information like frame rate and exposure, and offers customizable text overlays.

Speedometer»

Speedometer with large display

Free

This application displays your current speed in miles per hour, kilometers per hour, or knots. It features a large, clear display with Retina support for optimal visibility. Accuracy is enhanced by adjusting indicator transparency.

Panecal Scientific Calculator

For engineers and students

Free

This app functions as a scientific calculator, enabling users to input and edit complex formulas with ease. It supports formula history, variable memory, and various number system conversions for accurate calculations.

Touch RPN calc

Financial/Sci RPN calculator

Free

This app offers a powerful RPN calculator with financial and scientific functions, mimicking popular industry-standard models. It includes programming capabilities and expandable flavors for diverse calculation needs.

Strobe Light Tachometer

by Motionics, LLC

Free

Transform your iPhone into a powerful strobe light and tachometer. Precisely control flashing speeds from 1Hz to 130Hz to measure the RPM of rotating objects by making them appear stationary. Ideal for precise speed measurements in dark environments.

True Note - Record Player Test

Turntable speed checker

Free

Check your record player's speed accuracy using your phone's LED light and a printable strobe disc. Ensure your turntable is playing at the correct RPM for optimal audio quality. Useful for calibration and pre-purchase checks.