UserToolbox
12 Free Tools — E-commerce Toolkit

Free E-commerce Toolkit for Cross-Border Sellers

12 browser-based calculators & generators — no signup, no ads, always free. Built for Amazon FBA sellers, importers, and global e-commerce merchants.

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100% browser-based No data stored Mobile friendly Free forever
💰 Pricing & Profit

Pricing & Profit Calculators

Know your numbers before you list. Calculate margin, ROI, fees, and floor prices.

💰
FBA Profit Calculator
Calculate Amazon net profit, ROI & fees
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📊
Break-even Price Calc
Find the minimum price to stay profitable
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📈
Profit Margin Calculator
Margin, markup & selling price in one click
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💳
PayPal Fee Calculator
Know exactly what you'll receive after fees
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🚢 Shipping & Logistics

Shipping & Logistics Tools

Calculate freight, container fill rates, and true landed costs before you order.

📦
CBM Calculator
Calculate cubic meters for air & sea freight
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🚢
Container Load Calculator
How many cartons fit in a 20ft / 40ft container
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🧮
Landed Cost Calculator
Total import cost including duty & freight
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📋
Packing List Generator
Create professional export packing lists
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📋 Documents & Compliance

Documents & Compliance

Generate trade documents and find tariff codes in seconds.

📄
Proforma Invoice
Generate export invoices in seconds
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🔍
HS Code Tariff Lookup
Find tariff codes & import duty rates
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💱
Currency Converter
Live rates for 150+ currencies
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🛍️ Amazon Seller

Amazon Seller Tools

Optimize your Amazon listings with character-limit-aware editors.

🛍️
Amazon Listing Editor
Write titles & bullets with character limits
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Why UserToolbox?

Built by sellers, for sellers. No VC funding, no freemium tricks — just tools that work.

100% Browser-Based
All logic runs in JavaScript — no server calls, no latency.
No Signup Required
Open any tool and start calculating. No email, no account.
Always Free
Every tool, every feature, every calculation — permanently free.

Frequently Asked Questions

Quick answers about the toolkit.

Yes. All 12 tools are free forever — no account required, no credit card, no trial period. UserToolbox is funded by search traffic, not paywalls.

No. Every calculation runs entirely in your browser using JavaScript. Nothing is sent to or stored on any server. Your product costs, prices, and shipping data stay on your device.

Start with the FBA Profit Calculator to model net profit and ROI, then use the Break-even Price Calculator to find your floor price, and the Amazon Listing Editor to optimize titles and bullet points within Amazon's character limits.

Use the Landed Cost Calculator as your main tool — enter the product cost, freight, and duty rate. Pair it with the CBM Calculator to work out freight charges, and the HS Code Tariff Lookup to find the correct duty rate for your product.

Yes. Every tool in the toolkit is fully responsive and works on phones and tablets as well as desktop browsers. No app download required.

The Currency Converter fetches live exchange rates every time the page loads, giving you up-to-date rates for 150+ currencies without needing to refresh manually.