ShipDIM: Box & Weight Calc

Stop overpaying for shipping! ShipDIM is the fastest, all-in-one Dimensional (DIM) Weight and Box Size Calculator built specifically for e-commerce sellers, warehouse managers, and small businesses shipping with USPS, FedEx, UPS, and DHL.

📦 WHY SHIPPERS LOVE SHIPDIM:
Carriers charge based on either Actual Scale Weight or Dimensional (DIM) Weight—whichever is greater. If you use oversized boxes, you could be paying double in shipping costs! ShipDIM instantly analyzes your box dimensions and flags which rate applies before you buy your shipping labels.

⚡ INSTANT & REAL-TIME CALCULATIONS:
• Real-time DIM Weight calculation as you type or adjust dimensions.
• Instant Billable Weight & Carrier Billed Rate (rounded up to nearest pound or 0.5 kg).
• Rate Driver Indicator: Know instantly whether "DIM Rate" or "Scale Weight" triggers your shipping price.

⚠️ CARRIER SURCHARGE & OVERSIZE WARNINGS:
Avoid costly carrier penalties with real-time detection:
• USPS Nonstandard Length Fees (> 22" and > 30" thresholds)
• USPS Nonstandard Volume Surcharge (> 2 cu ft / 3,456 cu in)
• FedEx / UPS Oversize Package Surcharges (> 108" Combined Length + Girth)
• Maximum Carrier Limits (> 130" / > 165" or > 150 lbs)

📦 1-TAP SAVED BOX PRESETS:
• Pre-loaded with standard shipping boxes: USPS Padded Flat Rate, Small/Medium/Large Flat Rate Boxes, and Amazon standard parcel formats.
• Add custom warehouse & supplier boxes with custom tare weights.
• Switch box sizes with a single tap to test which box ships cheapest.

📐 COMPLETE LOGISTICS TOOLS:
• Girth (2W + 2H) and Combined Length + Girth (L + Girth) calculation.
• Cubic volume calculation (Cubic Inches, Cubic Feet, Liters).
• Dynamic Box Category Recommender (Flat Mailer, Small/Medium/Large Parcel, Freight).
• One-Tap "Copy Summary" to clipboard for customer service, shipping logs, or inventory notes.

🔄 IMPERIAL & METRIC SUPPORT:
• Switch between Imperial (Inches, Pounds) and Metric (Centimeters, Kilograms) with live math conversions.
• Standard carrier divisor presets: 139 (FedEx / UPS / USPS Commercial), 166 (USPS Retail), 5000 (Metric/International), or set your own Custom Divisor.

🌙 ERGONOMIC & BATTERY-FRIENDLY:
• High-contrast Light and Dark mode options.
• Fast thumb-friendly increment buttons (-1, +1, +5, +.5) for rapid one-handed packing bench data entry.
• 100% offline functionality.

Whether you sell on eBay, Amazon, Etsy, Poshmark, Shopify, or Mercari, ShipDIM helps you pack smarter, pick the cheapest box, and protect your profit margins.

Download ShipDIM today and never get hit with surprise shipping adjustments!