Free finance tools — GST calculator, EMI calculator, currency converter, and financial utilities. Accurate calculations in your browser.
Financial calculators and tools — currency conversion, invoice generation, IBAN validation, SaaS metrics (ACV, payback period, quick ratio), and more. Every calculation runs in your browser.
Calculate ROI, ACV, payback period, and other SaaS and business metrics.
Calculate Annual Contract Value (ACV) by dividing total contract value by the contract term in years.
Calculate SaaS customer payback period by dividing CAC by monthly revenue per customer.
Calculate SaaS Quick Ratio from new, expansion, reactivation, churned, and contraction MRR.
Calculate the Rule of 40 score by combining revenue growth rate and profit margin.
Convert currencies, validate IBANs, generate invoices, and manage receipts.
Converts between 160+ world currencies using real-time exchange rates sourced from central banks and financial data providers.
Validates the structure, length, and check digits of IBANs from 70+ countries using the official ISO 13616 modulus-97 algorithm.
Produces downloadable PDF or HTML invoices with customizable line items, tax rates, discounts, and business logo placement.
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.