Free Business Calculators 2026 – ROI, Break-Even, Profit & Revenue Tools

Make smarter business decisions with CalcPlanet's free business calculators. Calculate break-even point, ROI, profit margins, revenue projections, ROAS, and much more — all free, no login required.

✓ 51 All Online Calculators✓ No login required✓ Mobile Ready

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Break-Even Calculator Profit Margin Amazon FBA Calculator ROAS Calculator ROI Calculator

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Amazon FBA🔥

Calculate Amazon FBA profit, fees, margins and ROI per product.

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Shopify Profit🔥

Calculate Shopify store profit after plan fees, payment processing, ads, COGS and shipping.

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Etsy Profit🔥

Calculate Etsy seller profit after listing fees, transaction fees, and payment processing.

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eBay Fees🔥

Free eBay Fee Calculator 2026. See exactly what eBay takes (13.25% + $0.40) and your real payout in 1 second. Updated rates, no signup.

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AI API Cost🔥

Calculate ChatGPT, Claude and Gemini API costs per request, daily and monthly.

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CAC

Calculate CAC, LTV:CAC ratio and payback period to evaluate marketing efficiency.

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Restaurant Profit

Calculate restaurant profit margin, daily break-even sales and monthly profitability.

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Startup Valuation🔥

Estimate startup valuation using revenue multiples, DCF and comparable methods.

All Business Calculators (51)

Profitability & Margins

Calculate gross and net profit margins, mark-up percentages, and break-even points. Understanding your margin structure is essential for pricing products correctly and ensuring long-term profitability.

E-Commerce & Marketplace Tools

Dedicated calculators for Amazon FBA, Shopify, Etsy, eBay, and dropshipping businesses. Calculate platform fees, profit after fulfilment, and net income from sales across all major marketplaces.

SaaS & Subscription Metrics

Track MRR, ARR, churn rate, LTV, and CAC — the key metrics every SaaS business must monitor.

Marketing ROI

Measure the effectiveness of your marketing spend with ROAS, email marketing ROI, and customer acquisition cost calculators.

Business Calculators Guides

All Guides →

How to Calculate Profit Margin – Gross, Net & Operating

Learn how to calculate gross profit margin, net profit margin, and operating margin with formulas, examples, and industry benchmarks.

What Is Break-Even Point? Formula & Examples

Learn what the break-even point is, how to calculate it using the break-even formula, and how businesses use it to make pricing and investment decisions.

How to Calculate ROI for Business Decisions

Learn how to calculate Return on Investment (ROI) for marketing campaigns, equipment purchases, and business initiatives. Includes formula, examples, and ROI benchmarks.

How to Calculate EBITDA – Business Earnings Formula

Learn how to calculate EBITDA for any business. Understand what EBITDA means, how it is used in valuation, and how it differs from net income. With worked examples.

How to Calculate Markup – Pricing Formula & Examples

Learn the markup formula, how markup differs from margin, and how to set profitable prices. Includes examples for retail and wholesale.

How to Calculate Break-Even Point – Business Guide

Learn the break-even formula: Fixed Costs ÷ (Price − Variable Cost). Calculate units to sell and revenue needed to cover all costs.

Popular Business Calculators Calculations

Frequently searched calculations — answered instantly with formulas and step-by-step explanations.

Break-even point for a product Gross margin calculator Amazon FBA profit calculator ROAS calculator for ad spend SaaS MRR and ARR calculator Customer acquisition cost (CAC)Shopify profit margin calculator

Business Calculators Formula Reference

All Formulas →

Gross Profit Margin Formula – Business Profitability Markup Formula – Pricing Strategy Calculation Break-Even Formula – Fixed Costs ÷ Contribution Margin Payback Period Formula Gross Profit Formula – Revenue Minus Cost of Goods Sold Customer Lifetime Value (LTV) Formula Churn Rate Formula – How to Calculate Customer Churn

Frequently Asked Questions

How do I calculate gross profit margin?▼

Gross Profit Margin = ((Revenue − COGS) ÷ Revenue) × 100. For example, $10,000 revenue and $6,000 COGS: (($10,000 − $6,000) ÷ $10,000) × 100 = 40% gross margin.

How do I calculate break-even point?▼

Break-Even Units = Fixed Costs ÷ (Selling Price − Variable Cost per Unit). If fixed costs are $5,000, selling price $25, and variable cost $10: $5,000 ÷ ($25 − $10) = 333 units to break even.

What is LTV:CAC ratio and why does it matter?▼

LTV (Lifetime Value) = Average Revenue per Customer × Gross Margin × Average Customer Lifespan. CAC (Customer Acquisition Cost) = Total Marketing Spend ÷ New Customers Acquired. A 3:1 LTV:CAC ratio is the standard benchmark for a sustainable business.

How do I calculate Amazon FBA profit?▼

FBA Profit = Sale Price − Amazon Referral Fee − FBA Fulfillment Fee − Cost of Goods − Shipping to Amazon. Our Amazon FBA calculator handles all fee categories for any product category and size tier.

How do I calculate ROAS?▼

ROAS (Return on Ad Spend) = Revenue from Ads ÷ Ad Spend. A ROAS of 4 means you earn $4 for every $1 spent on advertising. A minimum 2x ROAS is typically needed to be profitable; 4x+ is excellent for e-commerce.

✓ Documented formulas — all tools use standard industry formulas✓ Updated regularly — content reviewed 2026✓ Used by thousands daily✓ Free — no sign-up required