# Scale for Grams — Full Documentation

> Scale for Grams is a digital scale application that estimates object weight from photos using advanced computer vision. Available as a free web app at scaleforgrams.com and as an iOS app on the App Store.

## Overview

Scale for Grams transforms any smartphone into a smart scale. Users photograph an object, and the app analyzes its size, shape, material, and context to estimate weight. Results are displayed in grams, kilograms, pounds, and ounces simultaneously. The service requires no account registration, no downloads for web use, and prioritizes user privacy.

## How It Works

1. **Photo Capture**: User takes a photo of the object using the in-app camera or uploads an existing image
2. **Image Analysis**: The image is analyzed using advanced computer vision technology
3. **Weight Estimation**: The app identifies the object, estimates dimensions, cross-references known weight data, and calculates estimated weight
4. **Results Display**: Weight is shown in 4 units (g, kg, lbs, oz) with an animated count-up display

## Supported Weight Units

| Unit | Abbreviation | Precision |
|------|-------------|-----------|
| Grams | g | 0-1 decimal places |
| Kilograms | kg | 3 decimal places |
| Pounds | lbs | 2 decimal places |
| Ounces | oz | 1 decimal place |

## Supported Languages

English, Spanish, French, German, Japanese, Korean, Chinese (Simplified), Portuguese, Italian, Hindi

## Pricing

- **Web**: Free, 2 scans per day, no account required
- **iOS App**: Available on the App Store with unlimited scans and additional features including scan history, offline mode, and priority processing

## Accuracy

Weight estimates typically fall within 10-20% of actual weight for common objects. Accuracy depends on:
- Object type (common items with standardized sizes work best)
- Photo quality (good lighting, flat surface, clear view)
- Reference objects in frame (coins or known items improve estimates)
- Object category (packaged goods and produce tend to be most accurate)

## Best Practices for Accurate Results

1. Place object on a flat, contrasting surface
2. Ensure good lighting with minimal shadows
3. Include a reference object (coin, pen, credit card) for scale
4. Photograph from directly above when possible
5. Avoid cluttered backgrounds
6. Use the rear camera for higher resolution images

## Technical Details

- **Technology**: Advanced computer vision and image analysis
- **Platform**: Next.js web application, iOS native app
- **Privacy**: No account required, images processed securely, no persistent storage of personal data
- **Browser Support**: All modern browsers (Chrome, Safari, Firefox, Edge)
- **Mobile Optimized**: Responsive design optimized for smartphone use
- **Performance**: Weight results delivered in under 10 seconds

## Common Object Categories

- **Food & Produce**: Fruits, vegetables, packaged goods, meat, baked goods
- **Jewelry & Accessories**: Rings, necklaces, watches, coins
- **Electronics**: Phones, tablets, headphones, cables
- **Packages**: Envelopes, boxes, parcels
- **Household Items**: Books, utensils, containers, toys
- **Sports & Fitness**: Dumbbells, balls, equipment
- **Office Supplies**: Paper stacks, binders, stationery

## Frequently Asked Questions

### How does Scale for Grams work?
Scale for Grams uses advanced computer vision to analyze photos and estimate weight. Take a photo of any object — the app identifies it, cross-references known object densities and dimensions, then returns an estimated weight in grams, kilograms, pounds, and ounces within seconds.

### Is it free to use?
Yes — Scale for Grams offers 2 free scans per day on the web with no account required. For unlimited scans, weight history, and offline mode, download the iOS app from the App Store.

### What objects can I weigh?
You can weigh food items, jewelry, coins, packages, fruits, vegetables, electronics, and most everyday objects. The app works best with common items that have well-documented weight ranges.

### How accurate is the estimation?
Accuracy varies by object type. For common items like fruits, canned goods, and electronics, estimates typically fall within 10-20% of actual weight. Results improve when the photo includes a reference object for scale comparison.

### What units are supported?
Scale for Grams displays weight in 4 units simultaneously: grams (g), kilograms (kg), pounds (lbs), and ounces (oz). All conversions are calculated automatically. The app also supports 10 languages.

## Links

- Web App: https://scaleforgrams.com
- iOS App: https://apps.apple.com/us/app/digital-scale-for-grams-kilo/id6751028750
- Summary: https://scaleforgrams.com/llms.txt