AI Tools
Prompt to Image
Describe any picture in words and get a real AI-generated image — free, no sign-up, no API key. Generation runs on the free Pollinations.ai service and usually takes 10–30 seconds.
Your generated image will appear here.
Creating your image… this can take up to 30 seconds.
Tip: detailed prompts give better results — mention the subject, setting, lighting and mood. A fresh random seed is used each time, so generating again gives a new variation.
Video Tools
Video to MP3
Turn any video file into an MP3 audio file. The whole conversion runs inside your browser with the FFmpeg engine — your video is never uploaded to a server.
One-time download: the first conversion downloads the FFmpeg converter engine (about 25–30 MB) into your browser. After that, conversions start right away. An internet connection is needed for that first download only.
Works with MP4, MOV, WebM, MKV and most other video formats. Shorter videos convert fastest — very large files (over ~200 MB) may be slow because everything happens on your device.
Text Tools
Word Counter
Count words, characters, sentences and paragraphs as you type, with reading time and keyword density.
Start typing and the most-used words will appear here with their density.
Text Tools
Case Converter
Convert text between UPPER CASE, lower case, Title Case, Sentence case, camelCase and more — instantly.
Passwords & Sharing
Password Generator
Create strong, random passwords with your browser's secure random generator. Nothing is sent anywhere.
Press Generate to create a password.
Passwords & Sharing
QR Code Generator
Turn any link or text into a scannable QR code, then download it as a PNG image for printing or sharing.
Everyday Tools
Unit Converter
Convert length, weight, temperature, time and data sizes — metric and imperial — with exact conversion factors.
Everyday Tools
Age Calculator
Find an exact age in years, months and days — plus total days lived and the countdown to the next birthday.
Everyday Tools
Percentage Calculator
Three everyday percentage questions, answered instantly as you type.
Everyday Tools
Image Resizer & Compressor
Resize an image and convert it to JPG, PNG or WebP — right in your browser. Your image never leaves your device.
Business Calculators
Profit Margin Calculator
Enter your revenue and total cost to see your profit, the margin you keep on every sale, and your markup.
Margin is profit as a share of revenue; markup is profit as a share of cost. Results update as you type.
Business Calculators
ROI Calculator
Work out the return on any investment — enter what you put in and what you got back.
ROI = (amount returned − amount invested) ÷ amount invested × 100. A multiple of 2× means you doubled your money.
Business Calculators
Discount Calculator
See the sale price after a discount — and exactly how much you save.
“You pay” is the share of the original price left after the discount — a 25% discount means you pay 75%.
Business Calculators
Loan Calculator
Estimate the monthly payment on a fixed-rate loan, plus the total you repay and the interest it costs.
Uses the standard amortization formula with monthly payments. Taxes, fees and insurance are not included.
Business Calculators
Compound Interest Calculator
See how money grows when interest earns interest — pick how often it compounds.
Future value = starting amount × (1 + rate ÷ times per year) ^ (times per year × years). The effective rate shows what compounding adds over a year.
Business Calculators
Break-Even Calculator
Find how many units you must sell before your business starts making a profit.
Break-even units = fixed costs ÷ (price − variable cost per unit). Every unit sold past that point is profit.
Business Calculators
Sales Tax Calculator
Enter a price and your local tax rate to see the tax on top — and the total your customer actually pays.
Sales tax = price × rate ÷ 100. Rates vary by state, county and city — use the rate that applies where you sell.
Business Calculators
Tip Calculator
Work out the tip on any bill, then split the full total fairly between everyone paying.
The tip is worked out on the bill amount you enter. Change the number of people and the split updates instantly.
Business Calculators
Hourly Wage Calculator
Turn an hourly rate into real money — what it adds up to per week, per month and per year.
Yearly pay = hourly rate × hours per week × 52 weeks; the monthly figure is the yearly total divided by 12. This is gross pay before tax, and overtime is not included.
Text & Writing Tools
Character Counter
Count characters with and without spaces, words, sentences and paragraphs as you type — plus an estimated reading time. Handy for essays, posts and social media limits.
Text & Writing Tools
Sentence Counter
Paste any text to count its sentences, see them listed one by one, and check the average sentence length in words.
Your sentences will be listed here, numbered, as soon as you add some text.
Text & Writing Tools
Text Cleaner
Fix messy text copied from PDFs, emails and web pages — extra spaces, stray line breaks, repeated lines and cramped punctuation.
Developer Tools
JSON Formatter & Validator
Paste JSON to pretty-print it with syntax highlighting, minify it for production, or validate it and pinpoint exactly where an error is.
Developer Tools
Base64 Encoder / Decoder
Convert text to Base64 and back. Unicode text — accents, emoji and other scripts — is handled correctly, and everything runs on your device.
Developer Tools
HTML Entity Converter
Encode special characters (< > & " ') into safe HTML entities for use in web pages — or decode entities back into normal characters.
QR Code & Link Tools
URL Encoder / Decoder
Encode text so it is safe to place inside a URL — spaces, symbols and accents become % codes — or decode a percent-encoded URL back into readable text.
QR Code & Link Tools
UTM Link Builder
Add campaign tracking tags to any link so Google Analytics can tell exactly which post, email or ad each visitor came from. The finished URL updates live as you type.
Source says where the traffic comes from, medium says how (social, email, paid ads), and campaign names the promotion. Keep them lowercase and consistent so your reports stay tidy.
Design & Color Tools
Color Palette Generator
Generate five harmonious colors built on proven color-wheel relationships. Click any swatch to copy its HEX code, and lock the colors you love before rolling again.
Tip: lock two or three anchor colors, then keep generating until the rest of the palette clicks into place.
Design & Color Tools
HEX / RGB Converter
Convert colors between HEX, RGB and HSL — type a HEX code or adjust the RGB values and every format updates live, with a preview.
Guides
10 Free Calculators Every Small Business Needs
The money questions every owner asks, and the free calculator that answers each one — every tool in this guide is right here on ToolBench.
Run a small business for more than a week and the same money questions keep coming back. What should I charge? Can I afford that loan? How much of a sale do I actually keep? None of them needs a spreadsheet, and none of them needs an accountant on call — each one needs about thirty seconds and the right calculator. These are the ten our visitors reach for most, in roughly the order the questions show up.
1 Profit Margin Calculator
This is the number that decides whether a sale actually made you money. Enter what a product or a job brought in and what it cost you, and you get three things back: the profit in dollars, the margin — the share of every sale you keep — and your markup. A bakery owner who knows the margin on a wedding cake knows whether a fully booked month was a good month, or just an exhausting one. Recheck it whenever supplier prices, ingredients or your own prices change.
2 ROI Calculator
Every business spends money hoping more comes back: a Facebook ad campaign, a better coffee machine, a stall at the summer market. ROI — return on investment — turns that hope into a number. Put in $500 and get back $750 and you have made a 50% return. Run it honestly after each spend and a pattern appears fast: some costs earn their keep every time, and some were never worth it.
3 Break-Even Calculator
Break-even is the point where you have sold just enough to cover your costs — not a dollar of profit yet, but not a loss either. It needs three numbers: your fixed costs (rent, insurance, the bills that land no matter what), your price, and what each unit costs you to buy or make. Out comes the exact number of units you must sell. It is the first figure a new business should know, and the one to revisit before hiring anyone or signing a bigger lease.
4 Discount Calculator
Sales are easy to announce and surprisingly easy to get wrong. Take 25% off a $120 service and the customer pays $90 — but what did you hand back, in actual dollars, and will the extra orders cover it? This calculator shows the sale price and the exact amount saved, so a promotion becomes a decision instead of a guess. It earns its place before Black Friday, and again at the counter when someone asks for “a little something off”.
5 Loan Calculator
Borrowing is neither good nor bad — borrowing blind is where businesses get hurt. Enter the amount, the interest rate and the term, and you will see the monthly payment, the total you will hand back over the life of the loan, and how much of that total is pure interest. That last figure is the one that makes people sit up. Lay two or three offers side by side and the cheapest loan is often not the one with the smallest monthly payment.
6 Compound Interest Calculator
Compounding means your interest starts earning interest of its own, and given years, the effect is bigger than most people expect. Use it to see what a small monthly surplus could grow into, or what an owner's retirement savings look like growing alongside the business. It cuts the other way too — it is the clearest picture of why carrying a credit card balance is so expensive.
7 Percentage Calculator
Underneath almost every other number in this list sits a percentage: tax rates, discounts, margins, price rises. This calculator answers the three forms the question actually takes — what is X% of Y, X is what percent of Y, and how much did something change between two numbers. When a supplier moves a price from $40 to $46, this is how you know that is a 15% rise and not just “a bit more than before”.
8 Sales Tax Calculator
Sell in the United States and sales tax follows you around — every state sets its own rate, plenty of cities add theirs, and customers quite reasonably want the full price before they commit. Enter the price and your local rate and you get the tax amount and the total with tax, to the cent. Quotes and invoices get cleaner, and there is no awkward pause at the register while somebody works it out on a phone.
9 Tip Calculator
Anyone who runs a restaurant, salon or bar faces this every night: what is a fair tip on this bill, and how does a table of six split it without an argument? Enter the bill, pick the percentage, say how many people are paying, and you get the tip, the total, and each person's share. It is just as handy on the other side of the counter, on the night you take the whole team out after a long week.
10 Hourly Wage Calculator
Hiring your first employee — or pricing your own hours as a freelancer — starts with one question: what does an hourly rate actually add up to? Enter the rate and the hours in a week and you will see the weekly pay, the smoothed-out monthly figure, and the yearly total. That yearly number is the one to weigh against a salary, a contract rate, or your staffing budget before you commit to any of them.
Every calculator in this list is free, needs no sign-up, and runs right in your browser — your numbers never leave your device. Bookmark the two or three you will use weekly. Five minutes with the right figures today is almost always cheaper than the lesson you would learn the other way.