Rigging Calculator: Crane Lift
Capacity, Radius & Load Chart
$9.99 · Designed for iPad. Not verified for macOS.
Also Included In
Rated capacity at your radius from the manufacturer's main-boom chart. Nine crane models, telescope modes, critical-lift flags. Offline.
Rated capacity at your operating radius, from the manufacturer's own main-boom load chart — for riggers, operators, and lift directors who need a quick check on the iron.
WHAT IT DOES
Pick your crane and boom length, enter load, rigging weight, and radius. The app reads the manufacturer's chart row at or above your radius (never interpolated), compares total rigged load against it, and flags the lift: under 75%, 75–90%, 90–100%, or over capacity. A radius beyond the chart is refused, not guessed.
CRANE MODELS INCLUDED
Rough terrain
- Grove RT540E (40 t, 32–102 ft)
- Grove RT770E (70 t, 36–138 ft)
- Grove GRT880 (80 t, 41–135 ft)
- Grove RT890E (90 t, 37–142 ft)
- Grove GRT8100 (100 t, 39–154 ft)
- Link-Belt RTC-8080 Series II (80 t, 41–127 ft)
- Tadano GR-800XL-4 (80 t, 39–154 ft)
- Tadano GR-1000XL-4 (100 t, 39–154 ft)
All terrain
- Link-Belt ATC-3210 (210 t, 44–200 ft)
Every chart is transcribed from the manufacturer's published product guide for main boom, fully extended outriggers, 360° rotation, and the counterweight named on that chart. Charts that list several telescope modes for one boom length keep the manufacturer's columns; match the LMI code shown in the cab. Each chart cites its source document, page, and retrieval date inside the app.
INPUTS
- Crane model and boom length / telescope mode
- Load weight (lb)
- Rigging weight (lb)
- Operating radius (ft)
RETURNS
- Rated capacity at the chart radius (lb)
- Total rigged load (lb and tons)
- Load as a percentage of rated capacity, color-coded
- Full chart for the selected boom length, with the row in use highlighted
BUILT FOR THE FIELD
- Works offline. No login, no account, no telemetry.
- One-time purchase. Lifetime access on iPhone and iPad via Family Sharing.
- Missing your crane? Request it from inside the app.
REFERENCE ONLY
This app is a lookup aid. The manufacturer's load chart in the cab governs, and 29 CFR 1926.1417(o) requires it to be available on the crane. It does not account for boom or jib deductions, out-of-level, wind, dynamic loading, or ground bearing. The lift director's sign-off is not replaced by anything on a phone.
Not affiliated with any crane manufacturer. Model names identify which published chart is being displayed.
Nine real crane models with the manufacturer's main-boom load charts: Grove RT540E, RT770E, GRT880, RT890E, GRT8100; Tadano GR-800XL-4, GR-1000XL-4; Link-Belt RTC-8080 II, ATC-3210. The five generic charts are gone.
Lookups now use the chart row at or above your radius — never interpolated — and a radius beyond the chart is refused instead of guessed. Boom length and telescope mode are selectable per the manufacturer's columns. Every chart shows its source and page.
Missing your crane? Request it from the app.
The developer, Shanghai Sheyuan Network Technology Co., Ltd., indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Shanghai Sheyuan Network Technology Co., Ltd.
- Size
- 1.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Sheyuan Inc.
