Commerce & Travel Calculators
Calculate volumetric shipping weight (DIM), profit margins, markups, discounts, EV charging time and trip fuel costs.
NZ GST Calculator — 15% Add & 3/23 Extract
Add 15% GST or extract embedded GST using New Zealand's official 3/23 statutory fraction with instant penny precision and multi-item quote builder.
NZ Sole Trader / Contractor Tax & Provisional Tax Calculator
Calculate NZ sole trader income tax, ACC CoverPlus levies, 3-instalment provisional tax obligations, and recommended Hnry-style invoice set-aside percentages.
Volumetric Weight (DIM) Calculator
Calculate volumetric weight (DIM) for shipping packages: (L × W × H) / divisor.
Profit Margin & Markup Calculator
Calculate gross profit, profit margin percentage, and markup from cost and revenue.
Fuel Cost & Consumption Calculator
Calculate trip fuel cost based on distance, average l/100km consumption, and gas price.
EV Charging Time & Cost Calculator
Calculate EV charging duration and total cost based on battery size and charger kW power.
Product Pricing & Shelf Price Calculator
Determine consumer shelf selling price from unit cost, target margin %, and sales tax / VAT.
Sales Discount & Savings Calculator
Calculate final discounted price and total money saved with percentage and coupon discounts.
Weighted Average Cost (WAC)
Calculate weighted average unit cost of inventory, commodities, or stocks purchased in multiple batches.
Price Increase & Hike Calculator
Calculate new prices after a rate hike, inflation increase, or supplier price markup.
Financial Loss & Deficit Calculator
Calculate total monetary loss and loss percentage when selling goods or assets below cost.
Commerce & Travel What You Need to Know
All tools in Calconova are engineered with institutional financial and scientific formulas. The enterprise decimal.js engine is utilized to eliminate floating-point rounding errors typical of standard JavaScript applications.
All calculations execute directly on your local device (Edge/Client-side); none of your data is stored on remote servers, guaranteeing 100% privacy.
All calculations, amortizations, and scenario projections displayed on this page are strictly for informational and educational purposes. Nothing herein constitutes investment, financial, tax, or legal advice. Actual Reserve Bank of New Zealand (RBNZ) interest rates, IRD PAYE brackets, ACC Earner's Levy, KiwiSaver regulations, and lender criteria may vary. Calconova explicitly disclaims all liability for any decisions taken based upon these calculations. Consult a qualified financial advisor, CPA, or official Inland Revenue documentation prior to executing financial commitments.