| What it does | Free metric weight converter for milligrams, grams and micrograms
| Free freight calculators for shippers, brokers, and small businesses
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| Pricing model | Free
| Freemium
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| Pricing | Not given
| Free tier: all calculators unlimited, no account required. Pro: $99/year (about $8.25/month billed annually, save 57%) or monthly pricing available; includes watermark-free PDF exports with custom branding, saved shipments and history, batch/CSV calculations, priority support, 14-day money-back guar
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| Key features | - Live results as you type with no submit button or page reload
- Exact decimal arithmetic with no rounding drift
- Converts in both directions: milligrams to grams and grams to milligrams
- Includes micrograms as a first-class unit in the full mcg to mg to g chain
- Privacy by design with calculations running entirely in browser
- Results display up to ten decimal places with at least four significant digits for small values
- Copy button to place full equation on clipboard
- Common values quick-access chips for frequent conversions
| - Freight Class Calculator with NMFC density scale (Docket 2025-1)
- CBM and volumetric weight calculations for sea and air freight
- Dimensional and chargeable weight by carrier divisor
- Pallet and container loading calculators (20ft, 40ft, 40HQ)
- Instant calculations with no sign-up or account required
- Freight class chart and commodity reference guides
- Bill of Lading form with PDF download
- Pro tier with watermark-free PDFs and saved shipments
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| What makes it different | - Exact results using SI definitions with no approximation or rounding error
- Entirely free with no account, paywall, usage limit or installation required
- Nothing sent to servers: all calculations run in your browser for complete privacy
- Educational guides explaining practical contexts where these units matter
| - All numbers from published freight standards, not guesses: NMFC density scale, carrier tariffs, real pallet and container specs
- Every calculation shows its work on the page so users can verify the math
- Mobile-first interface built for phones on the dock, not desks
- No friction: instant results without sign-up, pop-ups, or paywalls on core math
- Ten specialized calculators covering every freight calculation need in one place
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| Community votes | 0 | 0 |
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| DR (Domain Rating by Ahrefs) | 1 ● no change since last check | 15 ● no change since last check |
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| Trust Flow (Majestic) | 17 | 7 |
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| Citation Flow (Majestic) | 30 | 20 |
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| Referring domains (Majestic) | 431 | 25 |
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Milligrams to Grams
Freight Calculator Hub