All online tools

Estimate Amazon seller proceeds using fees you enter.

Estimate Etsy fees and net profit with editable fee rates.

Estimate eBay selling fees using your own current fee assumptions.

Estimate Shopify store profit after product, payment and marketing costs.

Estimate profit per sale for a dropshipping business.

Find a selling price from costs and target gross margin.

Find profit, margin and markup for product pricing.

Estimate how many units are needed to cover fixed costs.

Calculate return on ad spend from advertising revenue and cost.

Beautify, minify, and validate JSON data.

Convert common YAML documents into formatted JSON.

Convert JSON objects and arrays to readable YAML.

Convert CSV records to JSON, including quoted fields.

Parse XML documents into JSON objects.

Encode and decode text with Base64.

Encode and decode URL components.

Inspect JWT header and payload locally without validating its signature.

Test regular expressions with live match results.

Generate secure passwords locally in your browser.

Make a downloadable invoice with item totals and customer details.

Generate a clean, printable payment receipt.

Create a printable business quotation and cost estimate.

Prepare a basic job estimate with quantities and costs.

Generate a simple printable purchase order.

Create a styled email signature and copy its HTML.

Format and print a professional business letter.

Draft a simple editable agreement outline for review.

Convert HEIC photos to JPG when your browser supports decoding HEIC.

Convert WebP pictures to downloadable JPGs.

Convert AVIF pictures to PNG on supported browsers.

Render a local SVG file as a PNG image.

Turn a JPG image into a one-page downloadable PDF.

Convert PNG to JPG; transparent pixels become white.

Convert a JPG file into a PNG.

Estimate concrete volume in cubic yards for a rectangular pour.

Calculate roof pitch, angle and rise/run ratio.

Estimate rectangular deck board counts.

Estimate paint gallons from coverage, coats and surface area.

Estimate tile quantity with allowance for waste.

Estimate flooring area and required cartons.

Estimate brick count from wall and brick face dimensions.

Estimate drywall sheet quantity from wall area.

Compress JPG, PNG and WebP images to JPG.

Resize images to exact pixel dimensions.

Try to compress an image to a target size of 20KB.

Try to compress an image to a target size of 50KB.

Try to compress an image to a target size of 100KB.

Crop a portrait to a selected photo size; verify official requirements.

Crop an image using pixel coordinates and dimensions.

Resize multiple images and download them individually.

Read image width, height and file size locally.

Create a scannable QR code for text or links.

Create a QR code for Wi-Fi credentials.

Create a contact QR code containing vCard details.

Read QR codes from images when browser detection is supported.

Estimate monthly mortgage principal and interest.

Estimate a monthly auto loan payment.

Calculate sales tax using a rate you enter.

Split a restaurant bill and tip.

Estimate gross-to-net paycheck using taxes and deductions you provide.

Estimate compound interest growth.

Calculate monthly contributions needed for a savings goal.

Estimate payoff time from APR and monthly payments.

Calculate monthly debt payments as a portion of gross income.

Calculate a percentage of a number.