Weight Converter Calculator
Material mass, grams to pounds
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Weigh anything: convert 12 units live, calculate an object weight from its size and material, and check a parcel billable weight before you ship.
Convert any weight in a single tap and watch every unit update live — then find out how much a steel bar, gold ingot or shipping box actually weighs from its size alone.
Most converters stop at kilograms and pounds. This one keeps going: it turns your phone into a full weight and mass workbench — a fast converter, a density-based material calculator, a shipping weight tool and a reference library, all working from the same exact SI and avoirdupois factors.
WHAT YOU GET
- Instant conversion across 12 weight units — milligram to metric tonne, plus stone, carat, grain and troy ounce, updating live as you type
- Real object weight from size alone: pick from 20 materials with true density values, choose a box, cylinder or sphere, enter dimensions and read the exact result
- Billable shipping weight before you post: compare actual and dimensional weight with the right carrier divisor so you never overpay
- A full density table and plain-English guide covering dimensional weight, mass versus weight and precious-metal units
- Saved favorites and a running history so every result you care about stays one tap away
- A fast, offline-first workbench that keeps numbers exact instead of rounding away the details
PERFECT FOR
- Makers and DIY builders sizing metal, wood or concrete before they buy
- Shippers and resellers checking a parcel's billable weight
- Jewelers and hobbyists working in carats, grains and troy ounces
- Students and engineers who need mass from volume and density fast
WHY NOT JUST USE A SEARCH BOX?
A search box converts one number and forgets it. It cannot weigh a real object from its dimensions, it does not know material density, and it never tells you which shipping weight you will actually be billed for. This app does all three and keeps your results.
PRIVACY
Your conversions and saved results stay on your device. No account, no tracking.
FULL ACCESS
The converter and reference are free forever. A subscription unlocks the material weight calculator and the shipping weight tool, plus unlimited saved results. Choose weekly, yearly, or a one-time lifetime unlock. Payment is charged to your Apple ID at confirmation; subscriptions renew automatically unless cancelled at least 24 hours before the period ends, and you can manage or cancel anytime in your App Store settings. The lifetime option is a single purchase with no renewal.
Download it now and weigh anything — by unit, by material, or by parcel.
Terms of Use (EULA): https://web-levi.web.app/terms
Privacy Policy: https://web-levi.web.app/privacy-policy
Questions? tphuc.work@gmail.com
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Bug fixes and performance improvements.
Subscriptions
In-App Purchases
The developer, Phuc Pham, 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
- Phuc Pham
- Size
- 13.5 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 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+
- In-App Purchases
Yes
- Metals & Parcels, Pay Once $29.99
- Parcel & Shipping Yearly $14.99
- Metals & Materials Weekly $2.99
- Copyright
- © 2026 Phuc Pham