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Return on investment

Example

Total gain

$15,000

Investment cost

$10,000

ROI

50%

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Popular formula guides

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6 min

Margin vs. Markup: Formulas, Differences, and Pricing Examples

Understand the difference between profit margin and markup, convert between them, and avoid common pricing mistakes.

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ROI vs. ROAS: How to Measure Marketing Returns Correctly

Learn when to use ROI or ROAS, what each metric includes, and how margin changes the break-even return on ad spend.

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7 min

Customer Acquisition Cost: A Practical CAC Measurement Guide

Build a consistent CAC calculation, understand blended and channel CAC, and connect acquisition cost to lifetime value and payback.

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SaaS Metrics Guide: MRR, ARR, Churn, NRR, and Rule of 40

Understand the core SaaS metrics, how they connect, and the definition choices that make recurring-revenue reporting reliable.

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Calculator library

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Business

ROI Calculator

Measure the percentage return on an investment by comparing its gain with its original cost.

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Business

Profit Margin Calculator

Find the percentage of revenue left after costs and understand how efficiently a sale creates profit.

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Ecommerce

Markup Calculator

Calculate how much a selling price exceeds cost, expressed as a percentage of that cost.

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Business

Break-Even Calculator

Estimate how many units you must sell for contribution profit to cover fixed costs.

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Freelance

Commission Calculator

Calculate commission earnings from a sale amount and percentage rate.

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Marketing

ROAS Calculator

Measure the revenue generated for every dollar spent on advertising.

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SaaS

Customer Acquisition Cost Calculator

Calculate the average sales and marketing cost required to acquire one new customer.

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Marketing

CPM Calculator

Calculate advertising cost per one thousand impressions for a campaign or placement.

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Marketing

CPC Calculator

Calculate the average advertising cost for each click generated by a campaign.

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Marketing

Conversion Rate Calculator

Find the percentage of visitors who complete a desired action, such as a purchase or signup.

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Business

Cash Flow Calculator

Calculate net cash flow by subtracting cash outflows from cash inflows.

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Business

Operating Margin Calculator

Measure operating income as a percentage of revenue before interest and taxes.

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Business

Revenue Growth Calculator

Calculate the percentage change in revenue between two comparable periods.

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Business

Labor Cost Calculator

Estimate fully loaded annual labor cost beyond an employee's base salary.

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Business

Inventory Turnover Calculator

Calculate how many times average inventory is sold or used during a period.

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Business

Payback Period Calculator

Estimate how many years of steady cash flow are needed to recover an investment.

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Business

Contribution Margin Calculator

Calculate the share of revenue remaining after variable costs.

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Marketing

CTR Calculator

Calculate click-through rate from ad or link clicks and impressions.

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Marketing

CPA Calculator

Calculate average advertising cost for each acquisition or conversion.

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Marketing

Email Open Rate Calculator

Measure opens as a percentage of delivered marketing emails.

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Marketing

Email Click Rate Calculator

Calculate the percentage of delivered emails that generated a click.

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Marketing

Bounce Rate Calculator

Calculate the percentage of sessions that ended without the engagement you define.

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Marketing

Engagement Rate Calculator

Measure interactions as a percentage of reach for social or content campaigns.

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Marketing

Lead-to-Customer Rate Calculator

Calculate the percentage of qualified leads that became customers.

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Ecommerce

Average Order Value Calculator

Calculate average revenue generated by each ecommerce order.

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Ecommerce

Cart Abandonment Rate Calculator

Measure the percentage of initiated shopping carts that did not become purchases.

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Ecommerce

Discount Calculator

Calculate the sale price after applying a percentage discount.

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Ecommerce

Shipping Cost Per Order Calculator

Calculate average outbound shipping spend for each fulfilled order.

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Ecommerce

Ecommerce Return Rate Calculator

Calculate the percentage of sold items that customers returned.

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Ecommerce

Reorder Point Calculator

Estimate the inventory level that should trigger a replenishment order.

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Ecommerce

Customer Lifetime Value Calculator

Estimate customer lifetime revenue from order value, purchase frequency, and lifespan.

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SaaS

MRR Calculator

Calculate normalized monthly recurring revenue from customers and average monthly revenue.

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SaaS

ARR Calculator

Annualize monthly recurring revenue for a subscription business.

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SaaS

SaaS Churn Rate Calculator

Calculate the percentage of starting SaaS customers lost during a period.

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SaaS

LTV to CAC Ratio Calculator

Compare customer lifetime value with customer acquisition cost.

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SaaS

SaaS CAC Payback Calculator

Estimate how many months of gross profit are needed to recover customer acquisition cost.

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SaaS

Net Revenue Retention Calculator

Calculate recurring revenue retained after expansion, contraction, and churn.

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SaaS

SaaS Rule of 40 Calculator

Combine recurring-revenue growth and profit margin into the SaaS Rule of 40 score.

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Freelance

Freelance Hourly Rate Calculator

Estimate the hourly rate needed to cover income goals and business expenses.

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Freelance

Freelance Project Rate Calculator

Build a project quote from time, hourly value, direct expenses, and contingency.

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Freelance

Billable Utilization Calculator

Calculate the percentage of working time spent on billable client work.

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Freelance

Freelance Tax Set-Aside Calculator

Estimate how much freelance income to reserve using a chosen tax percentage.

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Freelance

Effective Hourly Rate Calculator

Calculate actual project revenue earned per hour of total time spent.

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Freelance

Freelance Retainer Calculator

Estimate a monthly retainer from reserved hours, hourly value, and a retainer discount.

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Finance

Compound Interest Calculator

Project a balance using principal, interest rate, time, and compounding frequency.

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Finance

Simple Interest Calculator

Calculate a future balance when interest is earned only on the original principal.

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Finance

Loan Payment Calculator

Estimate the fixed monthly principal-and-interest payment for an amortizing loan.

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Finance

Savings Goal Calculator

Estimate the monthly contribution needed to close a savings gap by a target date.

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Finance

Inflation Calculator

Estimate the future cost of an item after compound inflation.

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Finance

Debt-to-Income Ratio Calculator

Calculate monthly debt payments as a percentage of gross monthly income.

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