---
title: "Belt Length Calculator Pro - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Belt Length Calculator is a practical mechanical engineering tool for calculating belt length, pulley speed ratio, and belt speed for common belt drive systems.  Designed for mechanical engineers, mai"
---

# Belt Length Calculator Pro — United States
> Belt Drive & Pulley Tools

![Belt Length Calculator Pro App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/54/9c/68/549c688f-bd2f-7b57-b5fd-bf1c89fa9b34/AppIcon-0-1x_U007emarketing-0-11-0-85-220-0.png/434x0w.png)

**Developer:** [Imran Pinjara](https://apptail.io/developer/imran-pinjara-xeL) (India)
**Category:** Utilities
**Rating:** 2.3/5 (3 ratings)
**Price:** $2.99
**Bundle ID:** com.letsfab.beltlengthcalculatorpro
**Store:** Apple App Store
**Country:** United States
**Version:** 3.0 (released 2026-08-20)
**Original Release:** 2019-11-09
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1487292230)
**AppTail Page:** [https://apptail.io/app/belt-length-calculator-pro-QGle/united-states](https://apptail.io/app/belt-length-calculator-pro-QGle/united-states)

## Belt Length Calculator Pro Description
Belt Length Calculator is a practical mechanical engineering tool for calculating belt length, pulley speed ratio, and belt speed for common belt drive systems.

Designed for mechanical engineers, maintenance engineers, plant technicians, machine designers, workshop professionals, and engineering students, the app provides fast and convenient calculations for belt and pulley systems used in industrial machinery and mechanical equipment.

The application helps reduce manual calculations and provides useful reference values for belt selection, machine design, maintenance, troubleshooting, and drive system analysis.

Included Calculators

• Open Belt Length Calculator
• Cross Belt Length Calculator
• V-Belt Length Calculator
• Speed Ratio Calculator
• Belt Speed Calculator

Open Belt Length

Calculate the required belt length for open belt drive arrangements.

Enter:

• Large Pulley Diameter
• Small Pulley Diameter
• Center Distance

The calculator provides the calculated belt length along with the relevant input and reference values.

Cross Belt Length

Calculate belt length for crossed belt drive arrangements.

Enter the large pulley diameter, small pulley diameter, and center distance to determine the required belt length.

This is useful when designing or checking crossed belt drive systems.

V-Belt Length

Calculate belt length for V-belt drive systems using the appropriate belt length calculation method.

This calculator is useful for V-belt selection, replacement, machine maintenance, and mechanical drive design.

Speed Ratio

Determine the speed relationship between driver and driven pulleys.

Enter:

• Driver Pulley Diameter
• Driven Pulley Diameter
• Driver RPM

Calculate:

• Speed Ratio
• Driven Pulley RPM

This helps analyze pulley relationships and determine the resulting driven speed.

Belt Speed

Calculate the linear speed of a belt based on pulley diameter and rotational speed.

Results are provided in:

• m/s for Metric units
• ft/s for Imperial units

Features

• Open belt length calculation
• Cross belt length calculation
• V-belt length calculation
• Pulley speed ratio calculation
• Driven pulley RPM calculation
• Belt speed calculation
• Metric and Imperial units
• Automatic unit conversion
• Clear calculation results
• Accurate mechanical engineering formulas
• Simple and professional interface
• Fast calculations
• No internet connection required

Applications

Belt Length Calculator is useful for:

• Mechanical Design
• Belt Drive Design
• Machine Design
• Industrial Machinery
• Plant Maintenance
• Equipment Maintenance
• Power Transmission Systems
• Workshop Engineering
• Manufacturing Equipment
• Mechanical Troubleshooting

Designed For

• Mechanical Engineers
• Design Engineers
• Maintenance Engineers
• Plant Engineers
• Machine Designers
• Workshop Technicians
• Maintenance Technicians
• Industrial Professionals
• Engineering Students

Whether you are selecting a replacement belt, checking an existing pulley system, designing a belt drive, calculating machine speed, or troubleshooting mechanical equipment, Belt Length Calculator provides a convenient engineering reference for everyday belt drive calculations.

The app combines multiple belt and pulley calculations in one simple tool, helping save time, reduce manual calculation errors, and improve efficiency during mechanical design and maintenance work.

## Belt Length Calculator Pro Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/59/5e/cb/595ecb12-af8d-da6f-a36b-de6db1e8e98a/1.png/1290x2796.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/82/23/4e/82234e80-385c-91b0-d3b6-be289b12a50f/3.png/1290x2796.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/fa/e5/cb/fae5cb7e-3f4c-3b10-1b4b-9c1e02b4e1a2/4.png/1290x2796.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/99/6e/e3/996ee3e6-c15a-6621-8ef8-2c8c51b7987e/5.png/1290x2796.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/2e/43/0c/2e430c4f-a28c-5322-dd3e-93adfd0b61f8/6.png/1290x2796.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/40/4a/8b/404a8b96-6afb-a99e-1998-c5e6f29cde79/7.png/1290x2796.png)
- [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/1e/b6/8e/1eb68e07-e6ab-a2df-eb03-f7172bc1c4fb/8.png/1290x2796.png)
- [Screenshot 8](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/ca/48/0f/ca480f23-10ee-327b-76f0-a60b5b18926f/2.png/1290x2796.png)
- [Screenshot 9](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9d/e0/f3/9de0f38e-1c69-767e-3645-71d8f98f1c12/9.png/1290x2796.png)
- [Screenshot 10](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/7f/36/c2/7f36c279-810b-b1d9-d44c-f059555f2d19/10.png/1290x2796.png)

## Belt Length Calculator Pro Rating Breakdown in United States
- 5 stars: 1 (33%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 2 (67%)






## Belt Length Calculator Pro Available In
- [United States](https://apptail.io/app/belt-length-calculator-pro-QGle/united-states)
- [Canada](https://apptail.io/app/belt-length-calculator-pro-QGle/canada)
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---

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