Useful by the first click
Free Web Tools and Calculators
Use focused calculators, converters, generators, and checkers for finance, marketing, SEO, writing, media, and WordPress work. Every tool opens in your browser, requires no account, and gives you a result you can use immediately.
- 21
- working tools
- 6
- task categories
- Free
- No account required
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The collection is grouped by the decision or output you need, not by the technology behind it.
Complete directory
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Search by the calculation, conversion, or output you need.
Finance Calculators
8- 50/30/20 Budget Calculator: Targets and Actual SpendingUse this 50/30/20 budget calculator to split take-home income into needs, wants, and goals, then compare the targets…
- Break-Even Point Calculator: Units, Revenue, and Safety MarginUse this break-even point calculator to find break-even units, revenue, contribution margin, and margin of safety from costs…
- Emergency Fund Calculator: Find Your Real Safety NumberUse this emergency fund calculator to set a starter buffer, risk-adjusted savings range, monthly target, and funding timeline…
- Freelance Rate CalculatorFind the minimum hourly rate your freelance business can survive on, based on your income goal, costs, taxes,…
- Loan Lease CalculatorCompare a loan and lease with transparent formulas, worked test cases, residual-value sensitivity, amortization guidance, and explicit tax…
- Net Worth Calculator: Assets, Debts, and Liquid Net WorthUse this net worth calculator to total assets and debts, compare total and liquid net worth, and track…
- PayPal Fee CalculatorSee what PayPal keeps from a payment, or what to invoice to receive an exact amount, across checkout,…
- Sales Tax Calculator: Add or Remove TaxUse this free sales tax calculator to add tax to a price or remove included tax. See the…
Marketing Calculators
4- Conversion Rate CalculatorCalculate your conversion rate from visitors and conversions, then see how much revenue a better rate would bring…
- CPC & CPA CalculatorCalculate CPC, CPA, CTR, conversion rate, CPM, and ROAS from your ad spend, impressions, clicks, and conversions.
- Email Marketing Cost CalculatorEstimate your monthly email marketing cost from list size and sends per month, then see which provider is…
- Marketing ROI CalculatorEnter campaign costs and revenue to see ROI, net profit, ROAS, cost per lead, and CAC, plus a…
Text and SEO Tools
4- Case ConverterSwitch text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, PascalCase, snake_case, and kebab-case, with live counts. Runs…
- Keyword Density CheckerCheck how often a target phrase appears in your draft, its density and prominence, and which words and…
- Lorem Ipsum GeneratorGenerate Lorem Ipsum by paragraphs, sentences, words, or lists in four styles, then copy it as plain text…
- Text to Slug ConverterTurn any title into a clean, lowercase, hyphenated URL slug, with optional stop-word removal, a keyword check, and…
Developer Tools
2Media and Creator Tools
2AI Writing Tools
1Nothing matches that. Try budget, SEO, QR code, or LaTeX.
Use the result well
A calculator gives you a starting point, not the final decision
These tools are deliberately narrow. Enter the numbers or text, inspect the assumptions, and use the output for the task in front of you.
Financial estimates are not tax or legal advice. SEO scores are diagnostic signals, not rules. For important decisions, verify the inputs and compare the result with the real contract, campaign, or dataset.
Before you start
Questions about these free tools
Need something else? Tell me the recurring task.
Are all the tools free?
Yes. Every utility in this directory can be used without buying a plan or creating an account.
Does the site store what I enter?
Most tools process inputs in your browser. An individual tool explains when a network request or external service is required.
Can I use the results for client work?
Yes, but review the inputs and assumptions first. The output supports your judgment; it does not replace professional, legal, financial, or technical review.
Can I suggest another utility?
Yes. Send the recurring task, one example input, and the result you want.