Simple ROI Calculator (Return on Investment) — Fast, Accurate & Free

Simple Online Financial Calculators to Make Smart Business Decisions

Managing finances shouldn’t be complicated — yet many people struggle when calculating ROI, profit margins, VAT, pricing, or hourly rates. At Simple ROI Calculator, we make financial decision-making fast, accurate, and stress-free with a suite of free online business and finance tools.

Whether you’re evaluating an investment, pricing a product, analyzing profit, or calculating your freelance rate, our calculators give you clear results in seconds, without spreadsheets or complex formulas.

Why Use Online Financial Calculators?

Financial calculations can be confusing when done manually — especially when dealing with multiple values or long formulas. Our calculators simplify everything by providing:

• Instant and accurate results

• Easy-to-read summaries & breakdowns

• Advanced features (graphs, comparisons, annualized results)

• 100% mobile-friendly experience

• No signup, no downloads

Financial tools should be accessible for everyone — students, entrepreneurs, investors, freelancers, and small businesses.

Explore Our Free Online Calculators

Return on Investment (ROI) Calculator

https://simpleroicalculator.com/simple-roi-calculator

Calculate your Return on Investment, annualized ROI, profit, and investment gain instantly.
Perfect for business owners, marketers, real-estate investors, and finance students.

Includes:

• ROI %

• Investment gain

• Annualized ROI

• Investment time analysis

• Graph visualizations

Learn more about ROI here:
https://en.wikipedia.org/wiki/Return_on_investment

Profit Margin Calculator

https://simpleroicalculator.com/profit-margin-calculator

Understand how much profit you make per sale using:

• Gross profit margin

• Net margin

• Markup

• Profit amount

Essential for eCommerce stores, retail shops, and service providers.

Pricing Calculator

https://simpleroicalculator.com/pricing-calculator

Determine the correct selling price using:

• Cost of goods

• Desired margin

• Markup

• VAT inclusion/exclusion

Ideal for freelancers, online sellers, and local businesses.

VAT / Tax Calculator

https://simpleroicalculator.com/vat-tax-calculator

Quickly calculate VAT amounts:

• VAT inclusive

• VAT exclusive

• Reverse VAT

• Custom rates

Useful for invoicing and retail billing.

Hourly Rate Calculator

https://simpleroicalculator.com/hourly-rate-calculator

Designed for freelancers and employers.
Calculate hourly rate based on:

• Monthly income goal

• Billable hours

• Expenses

• Employer deductions

Includes employer salary-slip mode.

Percentage Calculator

https://simpleroicalculator.com/percentage-calculator

Solve common percentage formulas instantly:

• What is X% of Y?

• X is what % of Y?

• Percentage increase/decrease

• Percentage difference

Markup Calculator

https://simpleroicalculator.com/markup-calculator

Calculate markup percentage, selling price, and profit easily.

Our Mission

We aim to provide simple, fast, and powerful financial tools that help you make confident decisions — without the need for spreadsheets or expensive software.

Everything on our website is designed for real people who want accurate numbers and quick insights.

Who Uses Our Calculators?

• Small business owners

• Students & educators

• Consultants & freelancers

• Investors

• eCommerce sellers

• Accountants

• Anyone needing quick financial answers

Free Forever — No Registration Required

All tools on Simple ROI Calculator are:

100% Free
No account needed
Mobile-friendly
Ad-light (non-intrusive)
Fast, clean & accurate

Explore All Tools

https://simpleroicalculator.com