RubanTools

Free Small Business Tools

16 curated tools for shop owners and SMEs - manage inventory, track expenses, generate invoices, accept UPI payments and more. All free.

Inventory Calculator

Add products with quantity, cost price and selling price to see total stock value, selling value, profit margin and low-stock alerts. Export to CSV. Data saved in browser.

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Expense Tracker

Track monthly business expenses by category - Rent, Utilities, Inventory, Staff, Marketing and more. View category breakdown chart, monthly totals and export to CSV.

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Budget Planner

Enter your income and fixed/variable expenses to see monthly surplus or deficit. Checks spending against the 50/30/20 rule for needs, wants and savings.

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UPI QR Payment Generator

Generate a UPI QR code for your shop counter from your UPI ID and merchant name. Works with Google Pay, PhonePe, Paytm and BHIM. Download PNG or print instantly.

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Invoice Number Generator

Create sequential invoice numbers with custom prefix, separator, year and padding (e.g. INV-2025-0001). Auto-increments and saves the counter in your browser between sessions.

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Business Name Generator

Generate 30+ creative business name ideas from your industry and keywords using descriptive, compound, coined, acronym and action naming patterns. Includes numerology score.

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GST Calculator

Add or remove GST for all slabs (5%, 12%, 18%, 28%) with CGST/SGST/IGST breakdown for intra and inter-state.

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GST Invoice Generator

Create professional GST invoices with CGST/SGST or IGST breakdown. Add items, fill seller/buyer details and print or save as PDF.

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Profit Margin Calculator

Find gross profit, margin % and markup from cost and selling price - or calculate the selling price from a target margin.

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Salary Calculator

Convert CTC to monthly in-hand pay with Basic, HRA, PF, professional tax, TDS - old and new regime comparison.

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Payroll Calculator

Calculate monthly payroll for multiple employees with India-specific deductions: PF (12%), ESI (0.75%), Professional Tax, and estimated TDS.

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P&L Statement Generator

Build a printable profit & loss statement - add revenue and expense lines to instantly see gross profit, EBIT and net margin. For freelancers and SMEs.

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Discount Calculator

Enter a price and discount % to get the final sale price, or enter two prices to find the percentage off. Two modes, instant results.

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EMI Calculator

Calculate monthly EMI, total interest and full amortisation schedule for any loan with reducing-balance formula.

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QR Code Generator

Generate QR codes for URLs, text, vCard contacts, WiFi credentials and UPI payments with custom colours.

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IFSC Code Finder

Decode any 11-character IFSC into bank, branch, MICR and address. Covers all Indian banks via Razorpay's public IFSC database.

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Other Professional Kits

For Accountants

GST calculator, invoice generator, TDS, income tax, salary and compliance tools for Indian accountants.

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For Developers

JSON, Base64, hash, UUID, regex, diff, image tools, SEO generators and more for web developers.

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For Doctors & Healthcare

BMI, BMR, calorie, body fat, pregnancy, ovulation and other clinical calculators for healthcare professionals.

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For Real Estate

Area converters, stamp duty, home loan EMI, Vastu compliance and land-unit converters for property professionals.

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For Astrologers

Numerology charts, compatibility, gemstone finder, Vastu and festival date tools for practising astrologers.

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For Designers & UI Developers

Color picker, gradient generator, border-radius, box-shadow, SVG blob, glassmorphism, CSS grid, font pairing, image tools and more for designers.

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For Students

Study timer, timetable, GPA planner, attendance, rank predictor, MCQ generator, notes formatter and more for students.

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For Teachers & Trainers

MCQ generator, question paper builder, grade calculator, marksheet, attendance sheet, lesson planner, rubric and timetable tools for educators.

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For Content Creators

Hashtag generator, caption generator, YouTube title, script timer, word counter, readability checker, image tools and more for influencers and YouTubers.

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For Traders & Investors

SIP, FD, PPF, NPS, capital gains, CAGR, mutual fund, gold rate, inflation and retirement calculators for traders and investors.

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For Event Planners

Budget planner, countdown timer, currency converter, city distance, QR code, invoice, date calculator and image tools for event planners.

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For Travel Agents

Currency converter, world clock, city distance, dial codes, unit converters, age calculator, gold rate and QR generator for travel agents.

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For Lawyers & Legal Professionals

Limitation period calculator, court fee estimator, legal notice generator, NDA, privacy policy, GSTIN/PAN validator and financial tools for Indian lawyers.

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For Civil & Electrical Engineers

Ohm's Law, electrical load and MCB sizing, concrete mix design, beam deflection, wire gauge, unit converters and financial tools for civil and electrical engineers.

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Business Tools FAQ

Use our Inventory Calculator - add products with quantity, cost price, selling price and reorder level. Low-stock items are highlighted in amber. See total inventory value, potential revenue and gross profit. Export as CSV for spreadsheets.

Use our UPI QR Payment Generator - enter your UPI ID, name and optionally a fixed amount. Customers can scan it with any UPI app (PhonePe, Google Pay, Paytm). Download as PNG to print or display at your counter.

Use our GST Calculator - enter the base amount and select the GST rate (5%, 12%, 18% or 28%). It calculates CGST, SGST and IGST separately, and can also reverse-calculate from a GST-inclusive amount.