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QR & WiFi
Popular QR tools
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Barcodes
Popular barcode tools
Guides
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Calculators
Business and pricing
40% markupPrice from cost and margin
Recipe costCost per serving and plate
Job costingThe true cost of a job
Break-even pointSales needed to cover costs
Overtime payTime and a half, daily OT
All 28 business tools →
Freelance and gig
Time cardHours worked, lunch breaks out
Day rate to hourlyTurn a day rate into hourly
DoorDash taxWhat you owe on delivery pay
1099 taxSelf-employment tax estimate
Invoice generatorA free PDF invoice
All 9 freelance tools →
Construction
Mezzanine floorCost of a mezzanine
Joist spanMax span by lumber size
Grass seedSeed for your lawn size
Roofing screwsScrews for metal roofing
TopsoilCubic yards you need
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Guides
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Guides
QR and WiFi guides
WiFi QR format explained
WiFi password from a QR code
Invalid QR code, wait for WiFi
Scan a QR code on a laptop
WiFi QR code not working
QR code expired
Barcode guides
SKU vs UPC
UPC vs EAN-13
Do you need GS1 barcodes?
Barcode vs QR code
Business guides
Markup vs margin
ROI on marketing spend
Freelancer profit planning
Sod vs seed cost
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Free tools and guides for small business operators. Calculators, QR and barcode tools, and reports.

Guides

All Guides
Real Cost of Business Software: Hidden Fees and TCO Math
Freelancer Profit Planning: Beyond Hourly Rates
WiFi QR Code Format Explained (SSID, Password, WPA2 Example)
How to Find WiFi Password from QR Code (Mobile, Android & iPhone)
Free Dynamic QR Codes Without a Subscription (DIY)

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