KuajingBase Toolkit
Purpose-built tools for the cross-border trade workflow: pricing, logistics, documentation, world clocks and text utilities โ 38 tools live and growing. Every calculation runs locally in your browser: no sign-up, no uploads, fully private.
38 tools ยท 38 online now
Convert numbers to Chinese uppercase for invoices and contracts
Say dollars in English words for proforma invoices
Copy currency symbols and ISO 4217 codes worldwide
FOB/CIF/DDP pricing and profit margin calculator
Reverse-calculate tiered quotes by quantity
Calculate break-even volume by price and cost
Compare supplier quotes with landed cost
TT/LC/OA working capital cost calculator
Analyze FX fluctuation impact on orders
Estimate export VAT rebate and net profit
Freight, duty, VAT and local fees in one view
Progressive sales commission calculator
Calculate break-even ROAS and max CPA before scaling ads
Estimate carton loading per container type
Volumetric weight and chargeable weight tool
Compare DHL/UPS/FedEx and line-haul rates
Optimize carton sizes to cut freight
Audit destination port surcharges
Convert lbs/kg, oz, ft/in and more
Stacking efficiency for EUR/US pallets
Estimate FCL/LCL ocean freight
Calculate demurrage and detention charges
Estimate clearance and brokerage fees
Marine cargo premium at CIF 110%
Responsibility matrix of all 11 terms
High-risk countries and scam prevention
Overlapping business hours worldwide
Public holidays by country
ISO codes, calling codes and currencies
Plug types, voltages and frequencies
Compare wire, WorldFirst and Stripe fees
Convert major currencies at live rates
Beautify, minify and validate JSON
Turn CSV data into Markdown tables
Generate EAN-13, UPC-A and Code 128
UPPER, lower, Title, camel and more
Tone-free pinyin for names and addresses
TM, copyright and currency symbols
Pick tools by workflow
The toolkit is organized around the trade lifecycle: Finance & Pricing ยท Logistics & Container ยท Trade Communication ยท Time & Holidays ยท Countries & Currency ยท Files & Format ยท Text Processing. Run pricing before quoting, check chargeable weight before booking air freight, verify the buyerโs local hours before emailing, and produce documentation with the RMB-uppercase and amount-in-words converters.
All tools are developed in-house and free to use. Missing a tool you rely on? Tell us โ high-demand requests get built first.
Finance, quoting & settlement: nail down your margin before you accept the order
A trade orderโs profit is locked in the moment you send the quote. Enter goods value, inland freight, customs fees and your target margin into the quoting calculator to get VAT-inclusive and VAT-exclusive quotes in seconds; if your products are on the export rebate list, the export tax rebate calculator shows the cash rebate per order and feeds it straight back into your pricing floor. On the settlement side, use the live currency converter to set an FX benchmark at quote time, and the remittance fee comparison to lay out Airwallex, WorldFirst and Payoneer fees side by side โ picking the wrong channel can cost thousands per year. For large orders with long payment terms, run the FX sensitivity calculator to find your break-even rate before 30-60 days of currency exposure quietly eats the margin.
Air/sea freight, container loading & trade documents: get shipping and paperwork right the first time
Shipping mode decides profitability. Compare DHL, FedEx, UPS and line-haul small parcels side by side with the express rate comparison; air freight bills by volumetric weight, so run the air freight DIM calculator first to know whether your cargo is dense or bulky. For sea freight, the container load calculator simulates carton stacking plans to maximize utilization, and the ocean freight estimator helps you sanity-check forwarder quotes in minutes. Paperwork has tools too: generate standard amount-in-words for proforma invoices with the number-to-English converter, look up correct currency symbols for 160+ countries in the currency symbols reference, and produce scannable barcodes & QR codes with the built-in generators.