Business & E-commerce

Calculate profit, gross margin and markup from cost and price — or find the selling price you need for a target margin or markup.

Calculate advertising cost metrics — CPM, CPC, CPA and CTR — from spend, impressions, clicks and conversions. Leave one blank to solve for it.

Calculate return on ad spend (ROAS), ad-driven profit after product costs, and the break-even ROAS for your margin.

Estimate customer lifetime value from average order value, purchase frequency, gross margin and retention — and compare it with acquisition cost.

Calculate monthly customer churn and retention, the equivalent annual churn, and the average customer lifetime.

Calculate monthly and annual recurring revenue, net new MRR and growth from new, expansion, contraction and churned MRR.

Calculate your conversion rate from visitors and conversions — plus the revenue impact of improving it.

Check whether an A/B test result is statistically significant — conversion rates, relative uplift, p-value and confidence using a two-proportion z-test.

Find the sample size you need for a survey (margin of error) or an A/B test (minimum detectable effect) at your chosen confidence and power.

See how a price increase affects revenue and profit — and how many customers or sales you could lose before it stops paying off.

Build a tiered or volume-discount price table and calculate the total for any quantity — with all-units or graduated (per-tier) pricing.

Find how many units you need to sell — and how much revenue — to cover fixed costs, plus the units needed for a target profit.

Calculate a parcel's dimensional weight and billable weight for UPS, FedEx, USPS, DHL and other carriers using their divisor.

Estimate the true cost of an employee beyond salary — payroll taxes, benefits, retirement match, equipment and overheads — per year and per hour.

Compare a 1099 contractor rate with a W-2 salary: what hourly rate matches a salary once self-employment tax, benefits and unpaid time off are counted.

Add up one-time launch costs and monthly running costs to find how much money you need to start a business and cover a runway.

Project your business's cash balance month by month for a year from starting cash, revenue growth and fixed and variable costs — and spot when it runs low.

Calculate interest and late fees on an overdue invoice — by annual rate or monthly percentage, with a fixed fee — for the days it's overdue.

Add up a week of start and end times with breaks, get total hours in hours:minutes and decimal, and calculate pay with overtime over 40 hours.

Find out what a meeting really costs from the number of attendees, their average salary and its length — per meeting and per year if it repeats.

Calculate when to reorder stock (reorder point with safety stock) and how much to order (economic order quantity) to minimize inventory costs.

Calculate business mileage reimbursement at the IRS standard rate, UK HMRC approved rates (45p/25p) or your company's rate.

Calculate asset depreciation with straight-line, double-declining balance or sum-of-the-years'-digits methods, with a full yearly schedule.

Estimate what a small business is worth using revenue, EBITDA and seller's discretionary earnings (SDE) multiples, with a low–high range.

Calculate sales commission with a flat rate or tiered (graduated) rates, plus base salary, for any sales amount.

Find the due date for Net 7, 15, 30, 45, 60 or 90 payment terms from the invoice date, with the option to roll weekend dates to Monday.

Calculate Etsy fees — listing, transaction, payment processing and Offsite Ads — and your profit per sale after materials and shipping.

Estimate eBay final value fees and the per-order fee on a sale, plus your profit after item cost and shipping.

Calculate Shopify payment processing fees, third-party gateway fees and your monthly plan cost per order — and the profit left on each sale.

Calculate payment processing fees for Stripe, PayPal, Square and Venmo — what you receive from a payment, or what to charge to receive an exact amount.

Work out your payout and profit on Poshmark, Depop and other resale apps after selling and payment fees — or enter any platform's fee.

Find the real profit per order for a dropshipping product after supplier cost, shipping, payment fees and ad spend — plus break-even CPA and ROAS.

Calculate profit per item for print-on-demand products (t-shirts, mugs, posters) after the base cost, shipping and your store's fees.

Design a business card with your logo and details, then download a print-ready sheet of 10 cards with cut marks — or a single card for a print shop. Front and back, US or EU size.

Create a professional HTML email signature for Gmail, Outlook and Apple Mail — photo, logo, contact details and social links — and copy it in one click. Free, no sign-up.

Create a professional invoice, quote or estimate in minutes — logo, line items, tax/VAT, discounts and payment terms — and download a clean PDF. No sign-up, nothing uploaded.