The Margin Meter
Free business calculators for margin, ROAS, and break-even analysis. No sign-up required.
Free Calculators
Pick a tool and get instant results.
Profit Margin
Calculate cost, margin, revenue, and profit. Optimize your pricing strategy.
ROAS Calculator
Measure your Return on Ad Spend. Maximize your advertising efficiency.
Break Even
Determine the sales volume needed to cover your fixed and variable costs.
Discount Optimizer
See how discounts affect your margins and calculate the volume increase needed to protect profits.
LTV to CAC Ratio Calculator
Evaluate unit economics and marketing sustainability by comparing lifetime value to acquisition cost.
Guides & Resources
Deep dives, playbooks, and strategies for accelerating your margins.
How It Works
Three steps to better business decisions.
Step 1
Choose a Calculator
Pick the tool that fits your question — margins, ad spend returns, or break-even analysis.
Step 2
Enter Your Numbers
Fill in two or more fields. The calculator solves the rest instantly.
Step 3
Copy and Share
Copy results to your clipboard and share them with your team.
Why The Margin Meter?
Simple tools built for real business questions.
Instant Results
Enter any two fields and the calculator solves the rest. No waiting, no page reloads.
Built for Accuracy
Pure math under the hood. Every formula is unit-tested so you can trust the output.
Free Forever
No accounts, no paywalls, no tracking. Just open the page and calculate.
Works on Any Device
Responsive design means you can run numbers on your phone, tablet, or desktop.
Frequently Asked Questions
Quick answers to common business calculation questions.
What is profit margin?
Profit margin is the percentage of revenue that remains after subtracting all costs. It shows how much of each dollar in sales a business keeps as profit.
How do I calculate Return on Ad Spend (ROAS)?
ROAS is calculated by dividing the revenue generated by ads by the total ad spend. A ROAS of 3.0 means you earn $3 for every $1 spent on advertising.
What is a break-even point?
The break-even point is the number of units you need to sell so that total revenue equals total costs. Below this point you lose money; above it you earn profit.
Are these calculators free?
Yes. Every calculator on The Margin Meter is completely free with no sign-up, no limits, and no hidden costs.
Can I use these tools on my phone?
Absolutely. The Margin Meter is fully responsive and works on any screen size.