Online Tools

Free, browser-based calculators for finance, business, accounting, Excel and everyday work — built and mathematically tested one at a time.

Tool Categories

Finance

ROI, ROE, ROA, CAGR, NPV, IRR, Payback, Break-even, EBITDA, Margin.

Business

Profit, revenue growth, markup, working capital, valuation tools.

Accounting

VAT, depreciation, gross profit and net profit calculators.

Excel

Spreadsheet utilities, formula helpers and data tools.

PDF & Documents

PDF conversion and document utilities.

Productivity

General work calculators, generators and planning tools.

15 Financial Calculators Are Live

Each tool below is built with real formulas, worked examples and a plain-language explanation. Live in-browser calculation is marked “Coming Soon” while we finish the calculation engine — nothing here is a dead placeholder.

Compound annual growth rate

NPV Calculator

Net present value

IRR Calculator

Internal rate of return

Payback Period Calculator

Investment payback time

Break-Even Point Calculator

Break-even units & revenue

Gross Margin Calculator

Gross profit margin

EBITDA Calculator

Earnings before interest, tax, depreciation & amortization

Markup Calculator

Cost-to-price markup

Profit Margin Calculator

Net profit margin

Revenue Growth Calculator

Period-over-period growth

Loan / EMI Calculator

Monthly loan installment

Working Capital Calculator

Short-term liquidity

More tools across Excel, PDF and productivity categories are in active development.