Accurate calculators for makers, merchants and marketers

Print & Design

Convert paper weights, check print resolution, calculate bleed and set up book covers, labels, barcodes, embroidery and specialty apparel printing.

15 tools available

E-commerce

Work out per-order profit and marketplace fees for Shopify, Etsy, eBay, Stripe and TikTok Shop sellers, with every fee shown line by line.

7 tools available

Packaging & Logistics

Calculate dimensional weight, void-fill volume, pallet layers, girth limits and freight class so you stop paying carriers for empty air.

7 tools available

Marketing

Find break-even ad spend, convert CPM, CPC and CTR, estimate a fair influencer rate and track Amazon ACoS and TACoS from your real numbers.

8 tools available

Instagram Tools

Resize images, plan carousels, format captions and calculate Instagram engagement and growth with a small, practical toolkit for creators.

2 tools available

Food & Drink

Build a hot, iced or frozen drink and watch calories, protein, sugar and caffeine update as you change milk, syrup, shots and toppings.

1 tool available

PDF Tools

Merge, split, rotate, compress and convert PDF files in your browser. Nothing is uploaded, nothing is watermarked, and no account is needed.

18 tools available