Free Tools for Indian Businesses
Instant calculators for UPVC fabricators, glass dealers, and every Indian business. No signup, no ads, no limits — just results.
uPVC Window Calculator
Enter window dimensions (mm) and get instant price estimates per SFT. Perfect for fabrication quotes.
Open ToolGlass Weight Calculator
Calculate glass weight by dimensions and thickness. Supports mm and inches. Essential for shipping estimates.
Open ToolGST Calculator
Add or remove GST from any amount. Supports 5%, 12%, 18%, and 28% rates. Auto CGST/SGST split.
Open ToolRF-SF Converter
Convert Running Feet (RF) to Square Feet (SF) for uPVC profiles, aluminum sections, and linear materials.
Open ToolUPI QR Generator
Generate a UPI payment QR code instantly. Enter VPA, amount, and description. Print or share with customers.
Open ToolWhy These Tools?
We built these because every UPVC fabricator we work with needed them daily. Instead of locking them behind a paywall, we're giving them away free — as a taste of what smart business software feels like.
Need More Than Calculators?
Vitharn ERP gives you cloud-synced quotations, PDF invoicing, a branded website, customer portal, and payment tracking — all in one platform built for UPVC businesses.
View Pricing PlansStarting at ₹10,000 one-time · No monthly fees