RubanTools
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Free Event Planning Tools

16 curated tools for event managers - budget planning, countdown timers, date calculations, currency conversion, QR codes and invoicing. All free.

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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Countdown Timer

Set a duration or count down to a specific date and time. Progress bar, presets (1 min to 1 hr), and browser notification on completion.

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Date Difference

Calculate exact days, weeks, months and years between any two dates. Shows weekday and weekend breakdown.

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Date Calculator

Add or subtract days, weeks, months or years to any date. Find deadlines, expiry dates and anniversaries instantly.

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Currency Converter

Convert any of 160+ currencies using mid-market exchange rates refreshed daily. INR, USD, EUR, GBP, AED, SGD and more.

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World Clock

Live time in 46+ cities worldwide. Pick a date/time and instantly see what hour it falls in elsewhere - great for international calls.

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Distance Between Cities

Calculate great-circle (aerial) distance between 200+ Indian and international cities using the Haversine formula.

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Country Dial Codes

International dialling (ISD) codes for every country. Search by country name or code - India +91, UAE +971, UK +44.

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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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PDF Merger

Combine multiple PDF files into one - reorder files with ↑↓ buttons, see page counts, download instantly.

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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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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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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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Color Picker

Pick colours and get HEX, RGB, HSL, CMYK values. Tints, shades, and harmony colour palettes with WCAG contrast.

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CSS Gradient Generator

Create linear, radial and conic CSS gradients with custom colour stops. Copy CSS or download as PNG.

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Image Compressor

Reduce JPEG, PNG and WebP image file size with adjustable quality. Side-by-side before/after comparison.

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Event Planner Tools FAQ

Use our Budget Planner to list income and expenses (venue, catering, decoration, AV, logistics, staff). It calculates totals, shows surplus or deficit, and applies the 50/30/20 rule as a benchmark with unlimited rows per category.

Use our Countdown Timer - enter the event name, date and time. The timer counts down live in days, hours, minutes and seconds. Set multiple countdowns for different milestones like vendor deadlines and RSVP cutoffs.

Use our City Distance Calculator - select origin and destination cities. It shows the straight-line distance in kilometres and an estimated road distance, useful for planning vendor travel, shuttles and logistics costs for outstation events.