Free Ecommerce Calculators

Browse our collection of free online ecommerce calculators. Each tool includes the formula, step-by-step instructions, and educational content to help you understand the math behind the numbers. No signup required — just enter your values and get instant results.

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E-Commerce Calculators

Know your numbers, grow your business. Our ecommerce calculators help you analyze profit margins, customer acquisition costs, return on ad spend, and seller fees across major platforms.

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13 calculators

Profit Margin

E-Commerce
Calculate gross profit margin, markup percentage, and selling price. Converts between margin and markup with full profit breakdown.
★ 4.931K uses

COGS Calculator

E-Commerce
Calculate your Cost of Goods Sold using the inventory accounting formula. Includes gross profit margin and COGS as a percentage of revenue.
★ 4.918K uses

Break-Even Point

E-Commerce
Calculate your break-even point in units and revenue. Enter fixed costs, selling price, and variable cost per unit to find when your business becomes profitable.
★ 4.910K uses

Amazon FBA

E-Commerce
Calculate Amazon FBA fees, net profit, ROI, and margin for any product. Includes referral fees, fulfillment fees, and estimated storage costs.
★ 4.910K uses

ROAS Calculator

E-Commerce
Calculate your ROAS and break-even ROAS based on gross margin. Determine if your advertising campaigns are truly profitable.
★ 4.918K uses

CAC Calculator

E-Commerce
Calculate customer acquisition cost and LTV:CAC ratio. Evaluate the efficiency of your marketing spend and payback period.
★ 4.911K uses

Margin Calculator

E-Commerce
Solve for Gross Margin %, Markup %, Cost, or Revenue — choose what you know and calculate what you need. See why 50% markup does not equal 50% margin, and get the exact gross profit in dollars.
★ 4.932K uses

SaaS LTV:CAC

E-Commerce
Calculate customer lifetime value (LTV), customer acquisition cost (CAC), LTV:CAC ratio, payback period, and the SaaS Magic Number. Understand your unit economics with a gauge chart showing the 3:1 golden standard.
★ 4.924K uses

Payment Fees

E-Commerce
Compare Stripe and PayPal transaction fees side by side. Enter your transaction amount to see the exact fee, net amount, effective rate, and monthly volume impact for both processors.
★ 4.924K uses

YouTube Revenue

E-Commerce
Estimate YouTube AdSense revenue from views, CPM, and RPM. Calculate gross revenue, estimated monthly earnings, and net after Google's 45% cut. Supports multiple niche CPM presets from gaming to finance.
★ 4.945K uses

Etsy Fees

E-Commerce
Calculate all Etsy seller fees for any item: listing fee ($0.20), transaction fee (6.5%), payment processing (3% + $0.25), and optional offsite ads fee (12% or 15%). See your net profit and effective fee rate.
★ 4.953K uses

CPM/CPC

E-Commerce
Calculate CPM (cost per mille) and CPC (cost per click) from ad spend, impressions, and clicks. Includes reverse budget mode, CTR, and industry benchmark comparisons.
★ 4.939K uses

Engagement Rate

E-Commerce
Calculate engagement rate for Instagram, TikTok, and X (Twitter). Platform-specific formulas including saves and shares. Benchmark gauge with influencer tier classification.
★ 4.945K uses

About E-Commerce Calculators

Know your numbers, grow your business. Our ecommerce calculators help you analyze profit margins, customer acquisition costs, return on ad spend, and seller fees across major platforms.

Browse our curated collection of e-commerce calculators below. Each tool includes detailed formulas, educational content, and real-time results. Use the 13 calculators in this category to make informed decisions, solve problems, and get accurate answers instantly.

Amazon FBA fee and profit calculators
ROAS and CAC analysis tools
Profit margin and break-even analysis
Platform-specific fee calculators for Etsy, Stripe, and PayPal

Frequently Asked Questions

Should I price based on markup or margin?

Use margin for profitability analysis and markup for pricing. Margin shows what percentage of each sale is profit; markup shows how much above cost you are charging. The profit margin calculator gives you both so you never confuse the two.

How do I know if my ROAS is good?

A 4:1 ROAS is generally healthy, but it depends on your margins. If your margin is 25%, you need at least 4:1 just to break even on ad spend. The ROAS calculator works alongside the margin calculator so you can set realistic targets.

What is a good LTV to CAC ratio?

A ratio of 3:1 or higher is the benchmark most investors look for. Below 1:1 means you spend more to acquire a customer than they will ever pay you. The SaaS LTV CAC calculator factors in churn rate, ARPU, and gross margin.

How much does Etsy take in fees?

Etsy charges a $0.20 listing fee, a 6.5% transaction fee on the sale price, plus a payment processing fee (about 3% + $0.25 in the US). The Etsy fees calculator shows exactly what you will net after all fees for any selling price.

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