A collection of calculators including EMI, GST, ROI, SIP, percentage, age, date/time, unit conversion, and more. All in one tabbed interface.
Converts between 160+ world currencies using real-time exchange rates sourced from central banks and financial data providers.
Creates printer-friendly receipt pages with itemized purchases, payment method, date, and merchant details in a compact single-page layout.
Drop 100 invoice PDFs or images, auto-detect date, vendor, amount, and tax, then export a clean CSV ready for tax filing. Replaces expensive accounting OCR per-document fees.
Computes percentage values, percentage increases and decreases, and what-percent-of-what relationships with precise decimal arithmetic. Essential for everyday math — tips, discounts, tax rates, grade scores, and statistical comparisons where quick percentage answers are needed.
Timers (countdown, event countdown, stopwatch with laps), date math (add/subtract days, difference calculator, week number), converters (date↔timestamp), and time math (add/subtract hours/minutes, duration between times). (Time converter has its own dedicated page.)
Calculator Kit lets you a collection of calculators including EMI, GST, ROI, SIP, percentage, age, date/time, unit conversion, and more. All in one tabbed interface.. Everything runs inside your browser — nothing is uploaded to a server. It works on any device with a modern web browser.
A collection of calculators including EMI, GST, ROI, SIP, percentage, age, date/time, unit conversion, and more. All in one tabbed interface. It's ideal for developers, designers, and anyone who needs to a collection of calculators including emi, gst, roi, sip, percentage, age, date/time, unit conversion, and more without installing software or sending data to external servers.
Direct text entry, file upload, or URL-based input — depending on the tool. Paste or type your content directly into the provided editor area.
Yes. After the initial page load, Calculator Kit runs entirely on your device with no internet connection needed. All processing is done locally.
All calculators use standard financial formulas and are accurate to two decimal places unless otherwise specified.
Some calculators include local storage for recent calculations. History stays on your device and is not shared.
No. These tools provide mathematical calculations for educational and planning purposes. Consult a financial advisor for professional advice.
The currency converter supports 160+ currencies with live exchange rates via a public API, plus an offline fallback matrix.
Basic calculators work offline. The currency converter requires an internet connection for live rates but includes offline fallback data.
Currency Converter
Converts between 160+ world currencies using real-time exchange rates sourced from central banks and financial data providers.
Invoice Generator
Produces downloadable PDF or HTML invoices with customizable line items, tax rates, discounts, and business logo placement.
Receipt Generator
Creates printer-friendly receipt pages with itemized purchases, payment method, date, and merchant details in a compact single-page layout.
IBAN Validator
Validates the structure, length, and check digits of IBANs from 70+ countries using the official ISO 13616 modulus-97 algorithm.
Bulk Invoice & Receipt Parser
Drop 100 invoice PDFs or images, auto-detect date, vendor, amount, and tax, then export a clean CSV ready for tax filing. Replaces expensive accounting OCR per-document fees.
Annual Contract Value Calculator
Calculate Annual Contract Value (ACV) by dividing total contract value by the contract term in years.