Free QR code tools and business calculators
QR codes, barcodes, tax, pricing and material calculators for contractors, freelancers and shop owners. Everything runs in your browser, and the app works offline.
WiFi QR Decoder
Get the network name and password from a WiFi QR photo or screenshot.
Scan QR Without a Camera
Upload an image or screenshot and read the QR code on any laptop.
WiFi QR Code Generator
Make a printable guest WiFi card in under a minute.
UPC Code Generator
Create a UPC-A barcode with the check digit worked out for you.
1099 Tax Calculator 2026
Self-employment tax, income tax and quarterly payments in one place.
Day Rate to Hourly
Turn a day rate into hourly, weekly, yearly and after-tax pay.
QR and WiFi Tools
Read, check and create QR codes without an app
Decode a WiFi QR code from a screenshot, check where a QR link goes before you open it, or make a code for your menu, business card or product label. Every generator makes static codes, so they never expire and there is no monthly plan. Decoding happens on your device, so passwords are not sent anywhere.
WiFi QR Decoder
Read the SSID, password and security type from a WiFi QR image.
Scan QR Without a Camera
Upload, paste or drop a QR image and read it instantly.
Safe QR Code Scanner
See the real link and warning signs before you open a QR code.
WiFi QR Code Generator
Guest WiFi cards for homes, rentals, cafes and offices.
vCard QR Code Generator
A digital business card that saves straight to contacts.
PDF to QR Code
Share a menu or brochure PDF with a code that does not expire.
Bulk QR Codes from Excel
Make hundreds of QR codes from a spreadsheet list.
Transparent QR Code Generator
PNG and SVG with no background, ready for print.
Barcode Generators
Retail and inventory barcodes with correct check digits
Create UPC-A, EAN-13 and Code 128 barcodes that scan the first time. The check digit is calculated for you, and files download ready to print. Free barcodes are fine for your own stock, shelves and garment tags. If you sell through Amazon or large retailers, you need numbers from GS1, and the guides below explain exactly when.
Barcode Generator
Code 128, EAN-13, UPC-A and Code 39 in one tool.
UPC Code Generator
12-digit UPC-A with an automatic check digit.
EAN-13 Barcode Generator
13-digit international retail barcodes.
Garment Barcode Generator
Code 128 SKU labels for clothing tags.
Guide: Do I Need GS1 Barcodes?
When GS1 is required and when it is not.
Guide: UPC vs EAN-13
12 digits vs 13 and which one your store needs.
Guide: SKU vs UPC
Internal stock codes vs retail product numbers.
Guide: How to Make Barcodes for Products
Size, quiet zone and print checks.
Freelance and Gig Calculators
Rates, hours and 2026 self-employment tax
Work out what a day rate really pays per hour, what DoorDash or 1099 income leaves after tax, and when quarterly payments are due. The tax tools use 2026 IRS figures: a 15.3% self-employment rate, a $184,500 Social Security wage base, and mileage at 72.5 cents to June 30 and 76 cents from July 1.
1099 Tax Calculator 2026
Self-employment tax, income tax and quarterly payments.
DoorDash Tax Calculator
Take-home pay after mileage and self-employment tax.
Day Rate to Hourly
Hourly, weekly, yearly and after-tax equivalents.
Time Card Calculator
Daily and weekly hours with unpaid lunch breaks removed.
Billable Hours Calculator
How many hours you can really bill in a year.
Net 30 Payment Terms Calculator
Due dates, early payment discounts and late fees.
S Corp Tax Savings Calculator
When an S corp election saves more than it costs.
Free Invoice Generator
Make a PDF invoice with no account.
Business and Pricing Calculators
Price jobs, protect margin and know your break-even
Most pricing mistakes come from mixing up markup and margin. A 40% markup is only a 28.6% margin. These calculators show both, plus the true cost of an employee, what a job really earned, and how many sales cover your fixed costs. There are no email gates and no sales demo, just the numbers.
Break-Even Point Calculator
Units and revenue needed to cover your costs.
40 Percent Markup Calculator
Selling price, profit and the real margin.
Contractor Markup Calculator
Markup vs margin for bids and quotes.
Job Costing Calculator
Labor, materials and subs against the price you charged.
Labor Cost Calculator
Hourly wage plus employer FICA, FUTA and insurance.
Employee Cost Calculator
The full yearly cost of a hire, not just salary.
Recipe Cost Calculator
Plate cost, food cost % and menu price.
Per Diem Calculator
GSA lodging and meals with the 75% travel day rule.
Home and Construction Calculators
Material quantities from code tables and real waste factors
Order the right amount the first time. Get bags of concrete per fence post, tons of gravel for a driveway, pounds of grass seed, and joist spans from IRC 2021 tables. Each calculator shows its formula and adds waste where the trade does. UK builders also get Part K stair, planning fee and permitted development checks.
Concrete Calculator for Fence Posts
Bags per hole for any post and hole size.
Gravel Calculator for Driveway
Cubic yards and tons at your chosen depth.
Joist Span Calculator
Maximum spans from IRC 2021 floor and ceiling tables.
Roofing Calculator with Waste Factor
Squares and bundles for simple or complex roofs.
Drywall Mud and Tape Calculator
Joint compound, tape and screws by area.
Blown-In Insulation Calculator
Bags and depth to reach your R-value.
Grass Seed Calculator
Pounds of seed for new lawns or overseeding.
Mulch Calculator (Yards)
Cubic yards and bags for any bed size.
Guides
Step by step fixes for QR codes, barcodes and business math
Short, tested answers to the problems people search for: a WiFi QR code that will not connect, a menu QR code that has to last, or a barcode a store rejects. Each guide links to the tool that fixes it.
"Invalid QR Code! Please Wait for WiFi to Connect"
What the error means and how to fix it.
QR Code Not Scanning
The fixes that work, in the order to try them.
WiFi QR Code Format Explained
How the WIFI:T:WPA;S:;P:;; string works.
How to Make a QR Code for a PDF Menu
A menu code that does not expire.
QR Code vs NFC Tag
Cost, range, durability and which to choose.
Google Review QR Code
Turn your review link into a printable card.
Scan a QR Code on a Chromebook Without a Camera
Browser method, no extension.
Do I Need GS1 Barcodes?
An honest answer for small product sellers.
Install Toolsque and Use It Offline
Your most used tools, even with no signal on site
Toolsque installs like an app on your phone, tablet or computer, with no app store and no download size to worry about. Once installed, the 12 tools below open and calculate with no internet connection, which helps in basements, on rural job sites and on flights. Tools not on this list still open when you are online. Tap "Install App" in the header, or use "Add to Home Screen" on iPhone.
Works offline (cached by service worker):
How to install in 3 steps:
- Android & Desktop (Chrome / Edge): Tap "Install App" in the header or the install icon in the address bar.
- iPhone & iPad (Safari): Tap Share, then "Add to Home Screen".
- One-time sync: Open each tool once while online, so it is saved for offline use.
How Toolsque Is Built
Clear formulas, public sources and a named person responsible
Your inputs stay on your device
Calculations, QR decoding and barcode drawing run in your browser. The numbers, passwords and addresses you type are not uploaded or saved. The site uses analytics and ads to stay free, as explained in the privacy policy.
Sources you can check
Tax tools use IRS figures for 2026, span tools use IRC 2021 tables, and barcode tools follow GS1 check digit rules. Each tool lists its sources and the date it was last checked.
Free with no gates
No account, no email, no trial and no download limit.
Frequently Asked Questions
Common questions about tool accuracy, privacy and licensing
Are Toolsque tools free?
Yes. Every calculator, QR tool and barcode generator is free, with no account, no email and no usage limit. The site is supported by ads.
Is what I type private?
Yes. Calculations and QR decoding run in your browser, so the numbers, WiFi passwords and details you enter are not sent to or stored on our server. The site uses standard analytics and ads, as described in the privacy policy.
Do the QR codes expire?
No. Toolsque makes static QR codes, so the link or data is stored inside the code itself. They keep working as long as the printed code is readable and the page it links to still exists.
Can I use the barcodes on products I sell?
For your own stock, shelves and internal labels, yes. To sell through Amazon, Walmart or most large retailers, you need UPC or EAN numbers licensed from GS1. The generator draws a correct barcode, but it cannot give you a registered number.
Do the tools work offline?
Yes, after you install Toolsque as an app. 12 core tools, including the WiFi QR decoder, the barcode generators and the 1099 tax calculator, work with no internet connection once you have opened them online once.
How accurate are the tax calculators?
They use 2026 IRS figures, including the 15.3% self-employment tax rate and the $184,500 Social Security wage base. They give estimates for planning. They are not tax advice, so check big decisions with a tax professional.
Who builds and checks the tools?
Toolsque is built and tested by the Toolsque Team. Each tool shows its formula, its sources and when it was last checked. You can read how we test on the How we build and test page.
Can I suggest a new calculator?
Yes. Send the formula or the problem you are trying to solve through the contact page, and we will look at adding it.