Best Rpm Calculator Apps

Measure RPM with mobile cameraMeasure RPM with strobe light simulationAdjust RPM with seek bar or buttons

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.

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Lathe RPM Calculator

by Slava Barouline

Material selectionDesignation selectionTool type selection

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.

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Strobe tachometer (RPM meter)

+ Laser Tachometer + Magnetic

Strobe tachometer functionLaser tachometer modeMagnetic tachometer mode

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.

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Pulley system setupCalculate belt velocityDetermine pulley torques

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.

📊 Productivity

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paid

Giri -The RPM Checker-

by Natural Style Co. Ltd.

Rotational speed measurementNoise removal for accuracySpeed conversion panel

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.

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eCPM, CTR, RPM Calculator

Estimated Earning Calculator

$1.99

Moto Gear Ratio Calculator RPM

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Sprocket Speed Shift Analyzer

Perform a variety of calculations related to vehicle drivelines and engines. This tool helps users get the most out of genuine Spicer parts with specialized calculators for RPM, fuel savings, and more.

Driveline Angle CalculatorDriveshaft RPM CalculatorFuel Savings Calculator

💼 Business

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Rpm Meter: Calibrate Turntable

Motor Power Calculator

Check Speed and Error

Speedometer with large display

Displays speed in mph, km/h, knotsLarge, clear indicatorsRetina display support

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.

🗺️ Navigation

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ad-supported

Camera RPM Meter: Stroboscope

Tachometer & Strobe Light

AutoCal: Automotive Calculator

(0)

by Darwish alneyadi

RPM & Speed CalculatorDifferential Gear CalculatorEngine Compression Calculator

This utility app consolidates numerous automotive calculators into a single platform. It offers tools for calculating RPM, speed, differential gear ratios, engine compression, displacement, tire size, and pulley ratios, with more features planned.

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CNC Machinist Calculator Ultra

Pulley Calculator Easy

All-in-One Machining Tool

Cutting speed and feed recommendationsTap drill size calculationsTrue position calculations

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.

Smart RPM and Speed meter

Smart RPM meterSpeed meter functionalityReal-time vehicle data

This application functions as a smart RPM and speed meter, providing real-time data for users. It offers a digital display of vehicle performance metrics. The app is available for free with an optional premium subscription.

⚽ Sports

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The Go To Digital Toolbox

Toolbox TREMEC U.S.

Driveline Angle FinderRPM CalculatorTire Size Calculator

This application simplifies driveline setup and predicts performance changes from gear ratios and tire size. It offers tools to calculate vehicle speed and RPM variables, aiding in rig planning and performance expectation.

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