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Guides for every tool

Clear, step-by-step walkthroughs — what each tool does, how to use it, and a real example. New guides are added regularly.

Tool guides

Make a branded invoice, quote or estimate and export a PDF.

Scale & convert a whole recipe between US, UK and metric.

Convert across 13 families — length, mass, volume, temperature & more.

8 barcode symbologies and styled QR codes.

Itemized cash receipts with tax, change due and a scannable code.

Area & material-cost estimates for rooms and projects.

Loan, paycheck, sales-tax, tip and savings tools.

BMI, healthy-weight range and height/weight conversion.

Convert world currencies and crypto at live exchange rates.

Live gold, crypto market cap, FX and the Fear & Greed index.

A scientific calculator that converts its answer in one tap.

Every unit, its system and the cited factor behind it.

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