# NLE Calc > NIOSH Lifting Equation calculator for assessing physical stress in lifting tasks. (iPhone/iPad app by Centers For Disease Control and Prevention.) - Source: https://appshunter.io/ios/app/nle-calc/id1266403464 (this page in markdown: same URL + `.md`) - Developer: [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) - Category: Utilities - Price: Free - Rating: 2.80/5 from 10 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 62 MB - Released: 2017-08-09 - Data updated: 2026-08-28 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/nle-calc/id1266403464/reviews.md ## What is NLE Calc? The NIOSH Lifting Equation calculator (NLE Calc) is based on the Applications Manual for the Revised NIOSH Lifting Equation (Pub No. 94-110) and can be used to calculate the Recommended Weight Limit (RWL) and for single or multiple lifting tasks. The Lifting Index (LI) is an index of the relative physical stress for performing a single lifting task and the Composite Lifting Index (CLI) is an index of the overall physical stress for performing multiple lifting tasks. NIOSH recommends an LI and a CLI of 1 or less for protecting workers from physical stress related to development of low back musculoskeletal disorders. Please refer to the Applications Manual for the Revised NIOSH Lifting Equation publication for examples and details on how calculations are performed and what the results imply. ## Key features - Calculates Recommended Weight Limit (RWL) - Calculates Lifting Index (LI) - Calculates Composite Lifting Index (CLI) - Based on Revised NIOSH Lifting Equation - Assesses physical stress for lifting tasks ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/nle-calc/id1266403464/reviews.md ### 2/5 — Inputs do not work *2024-06-11* The destination fields are blocked for vertical distance and asymmetry. The calculations cannot be done without that data. ### 1/5 — Lack of usability *2024-03-27* User interface needs improvement, was required to use for a class and was disappointed. ### 1/5 — Sending hate from America *2024-03-27* Hate ### 3/5 — Okay, but some simple improvements needed *2017-10-27* The user interface is easy and generally understandable. Very good for quick assessments. There is an error with the tabs calculation details and recommendations: the content is reversed between the two. The main improvement that is needed is a way to get the results out of the app so the records can be retained and consolidated. Without that capability, it cannot be widely used! ## Frequently asked questions about NLE Calc ### What is NLE Calc used for? NLE Calc is used to calculate the Recommended Weight Limit (RWL) and Lifting Index (LI) for single or multiple lifting tasks. This helps assess the physical stress associated with lifting to prevent low back musculoskeletal disorders. ### How accurate is NLE Calc? The app is based on the Applications Manual for the Revised NIOSH Lifting Equation (Pub No. 94-110), a widely recognized standard for assessing lifting ergonomics. The accuracy relies on correct input of task parameters. ### Does NLE Calc have ads? No, NLE Calc does not contain advertisements. It is a free utility provided by the Centers for Disease Control and Prevention. ### What devices support NLE Calc? NLE Calc is available for iPhone, iPad, and iPod touch devices. It is designed for iOS. ### How often is NLE Calc updated? The latest version, 2.0.4, was last updated on August 19, 2024. Updates typically address bug fixes and ensure compatibility with newer iOS versions. ### What is the age rating for NLE Calc? NLE Calc has an age rating of 4+. This indicates it is suitable for users of all ages, with no content restrictions. ### Where can I find more information about the NIOSH Lifting Equation? The app refers users to the Applications Manual for the Revised NIOSH Lifting Equation publication for detailed examples and explanations of the calculations and their implications. ### What does a Lifting Index (LI) of 1 or less mean in NLE Calc? NIOSH recommends a Lifting Index (LI) of 1 or less for protecting workers from physical stress. An LI of 1 or less suggests that the lifting task is within acceptable limits for preventing low back musculoskeletal disorders. ## Version history (last 4 releases) ### 2.0.4 — 2024-08-19 - User Interface updates - Workflow updates ### 1.0.2 — 2017-08-31 This app has been updated by Apple to display the Apple Watch app icon. - Bug fix to address inability enter task names. ### 1.0.1 — 2017-08-24 - Bug fix to remedy crashing on iPads. ### 1.0 — 2017-08-09 No release notes. ## Apps similar to NLE Calc | App | Rating | Price | Category | | --- | --- | --- | --- | | [Light Meter LM-3000](https://appshunter.io/ios/app/light-meter-lm-3000/id1554264761) | 4.5 (2,547) | Free | Utilities | | [Intelex Mobile](https://appshunter.io/ios/app/intelex-mobile/id1097232446) | 2.1 (110) | Free | Utilities | | [Gas Detection](https://appshunter.io/ios/app/gas-detection/id509211421) | 5.0 (2) | Free | Utilities | | [3M Fall Protection Tool](https://appshunter.io/ios/app/3m-fall-protection-tool/id1437823099) | — | Free | Utilities | | [NIOSH Sound Level Meter](https://appshunter.io/ios/app/niosh-sound-level-meter/id1096545820) | 4.7 (16,645) | Free | Utilities | | [LD Atlas](https://appshunter.io/ios/app/ld-atlas/id1458129589) | 5.0 (4) | Free | Utilities | ## More apps by Centers For Disease Control and Prevention - [CDC](https://appshunter.io/ios/app/cdc/id487847188) - [Solve the Outbreak](https://appshunter.io/ios/app/solve-the-outbreak/id592485067) - [Contraception](https://appshunter.io/ios/app/contraception/id595752188) - [STI Tx Guide](https://appshunter.io/ios/app/sti-tx-guide/id655206856) - [Ladder Safety](https://appshunter.io/ios/app/ladder-safety/id658633912) - [Prevent Group B Strep(GBS)](https://appshunter.io/ios/app/prevent-group-b-strepgbs/id689290789) All apps by Centers For Disease Control and Prevention: https://appshunter.io/developer/439259253 ## Related topics [nle calc](https://appshunter.io/ios/topics/nle-calc) · [nle](https://appshunter.io/ios/topics/nle) · [niosh nle](https://appshunter.io/ios/topics/niosh-nle) · [niosh lifting equation](https://appshunter.io/ios/topics/niosh-lifting-equation) · [niosh ergonomics](https://appshunter.io/ios/topics/niosh-ergonomics) · [ergonomics](https://appshunter.io/ios/topics/ergonomics) · [environmental](https://appshunter.io/ios/topics/environmental) · [niosh](https://appshunter.io/ios/topics/niosh) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*