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No cost.
Just answers.
Calculators and generators built for people running a small business — pricing, margins, invoices, and more. Pick a tool and get your number.
- ✓ No account or card
- ✓ Calculators run in your browser
- ✓ Formulas shown on every calculator page
What tools and categories are available on SMBkits?
29 free tools across five categories.
- Pricing & Margins: Calculators for setting and checking prices — margin, markup, discounts, sales tax, and freelance rates.
- Financial Planning: Bigger-picture numbers for decisions that affect the whole business — break-even, ROI, and loan payments.
- Invoicing & Payments: Everything around getting paid — quotes, invoices, late fees, and chasing overdue payments.
- Hiring & People: The real cost of a new hire, and writing the posting to find them.
- Marketing & Content: Tracking links, QR codes, and AI-generated copy for reviews, leads, social posts, and product listings.
Which category do you need?
Open a category to see every tool in it, with an example of what you enter and what you get back.
What free pricing and margin calculators are available?
Pricing & Margins
5 toolsCalculators for setting and checking prices — margin, markup, discounts, sales tax, and freelance rates.
See examples for every Pricing & Margins tool →What financial planning tools does SMBkits offer for businesses?
Financial Planning
3 toolsBigger-picture numbers for decisions that affect the whole business — break-even, ROI, and loan payments.
See examples for every Financial Planning tool →What free invoicing and payment generators are available?
Invoicing & Payments
7 toolsEverything around getting paid — quotes, invoices, late fees, and chasing overdue payments.
- Late Fee & Interest
- Invoice Generator
- Quote Generator
- Overdue Invoice Email
- Scope Creep Email
- Contract Termination
- Payment Fee Calculator
What hiring and people tools does SMBkits provide for employers?
Hiring & People
2 toolsThe real cost of a new hire, and writing the posting to find them.
See examples for every Hiring & People tool →What marketing and content generators are available for small businesses?
Marketing & Content
12 toolsTracking links, QR codes, and AI-generated copy for reviews, leads, social posts, and product listings.
- UTM Builder
- QR Code
- Review Reply
- Instant Reply
- LinkedIn Rewriter
- Product Description
- Cold Email
- Freelance Proposal
- Content Repurposer
- Testimonial Formatter
- GBP Writer
- Local Area Check
Guides worth reading first
All guides →How to Choose Google Business Profile (GBP) Categories
How to choose Google Business Profile (GBP) categories: pick a specific primary category, add only a few real additional ones, and avoid the common mistakes.
Local SEO Competitor Analysis: How to See Who You're Up Against
Local SEO competitor analysis made simple: find who competes near you, compare profiles on what Google weighs, and record a baseline with a free tool.
How to Write a Google Business Profile (GBP) Description
How to write a Google Business Profile (GBP) description: the 750-character limit, what to include and avoid, fictional examples, and a free generator.
Local SEO ROI: Before and After Your Google Business Profile (GBP)
How to measure local SEO ROI: baseline your Google Business Profile, track calls and directions, and read case studies with the caveats agencies skip.
Google Campaign URL Builder Alternative: Free UTM Link Builder
A free UTM link builder for small business marketing, with the same core fields as Google's tool. No sign-up, generates trackable campaign URLs instantly.
Wave Invoicing Alternative: Free Invoice Generator, No Account
Looking for a Wave alternative? Generate a professional PDF invoice free in your browser, no account or sign-up required. Built for small business owners.
Why it's free
No account, no card, no catch. Calculators run entirely in your browser and never send data anywhere; a few AI generator tools send only the text you enter to Google's Gemini API to produce a result. We keep the lights on with a small amount of advertising, not by charging small business owners for a calculator.
What are the frequently asked questions about SMBkits?
Q.Are the tools on SMBkits free to use?
Yes — every calculator and generator on SMBkits is completely free, with no sign-up, no card, and no usage limit.
Q.Do I need to create an account?
No. There's nothing to sign up for. Open a tool, enter your numbers, get your answer.
Q.Is what I type into a tool sent to a server or stored anywhere?
Calculators run entirely in your browser and never send data anywhere. A few AI-powered generator tools (marked as such) send only the text you enter to Google's Gemini API to produce a result — see the Privacy Policy for details.
Q.How does SMBkits make money if the tools are free?
Through a small amount of advertising, not by charging small business owners for a calculator.
Q.How accurate are the results?
Each calculator uses a standard formula that its page states in plain words, so you can check a result by hand. Results are only as good as the numbers you enter, and they are estimates for planning, not a substitute for an accountant or a lawyer.
Q.Which tool should I start with?
If you are setting a price, start with the markup calculator and check it with the profit margin calculator. If you are planning a commitment such as a lease or a hire, start with break-even. If you need to get paid, start with the invoice generator.
Q.Do the AI tools make up facts?
They are written to use only what you provide and not to invent prices, awards or history. Always read a draft before you use it, and add the details only you know.
Q.Can I save my work?
The tools do not store anything between visits. Download the PDF, copy the text or note the result before you leave the page.
Q.Where do the numbers in the guides come from?
Worked examples use fictional businesses with figures we calculate. When a guide states an outside rule, rate or fee, such as a tax rate or a payment fee, it links to the source it was read from.
Q.Can I use the tools for tax or legal decisions?
Use them for estimates and drafts. Tax, payroll, late-fee and contract rules vary by country and situation, so confirm anything that carries legal or tax weight with the relevant authority or a qualified professional.
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