Calculators
43 tools
These calculators cover the sums people actually need to work out: a loan or mortgage payment, what savings grow to, whether a price leaves a healthy margin, a BMI, a due date or a shared bill.
All calculators →296 free tools, no account needed
Calculators, PDF and image tools, converters, writing and developer utilities. Each one explains how it reaches its answer, and most run on your own device so your files stay with you.
Free, no account
Open a tool and use it. No sign-up, credits or daily limits.
287 of 296 run in your browser
Files and text are processed on your device. Lookup tools say when they contact another service.
Tested before release
Formulas are checked against reference examples and file tools against real files.
Guides for every method
Short articles explain the maths or the file format behind each tool.
The jobs people come here for most, each one a click away.
Monthly mortgage payment with taxes, insurance, PMI and extra payments.
Work out a mortgage or loan payment.
Reduce PDF file size to a target you set, or with lossless optimizing or a smaller image-based copy.
Shrink a PDF to fit an upload limit.
Combine multiple PDF files into one.
Combine PDFs into one file.
Convert JPG and PNG images to PDF.
Turn photos into a PDF.
Compress images to reduce file size. Adjustable quality, instant preview and download.
Make images smaller for a website.
See how savings and monthly deposits grow with compound interest, with a chart and a year-by-year table.
See how savings grow over time.
Check resume ATS compatibility score.
Check a resume against a job posting.
Count words, characters, sentences, and paragraphs in any text.
Count words and check reading time.
Each topic has its own hub with the most useful tools, guides that explain the method, and answers to common questions.
43 tools
These calculators cover the sums people actually need to work out: a loan or mortgage payment, what savings grow to, whether a price leaves a healthy margin, a BMI, a due date or a shared bill.
All calculators →19 tools
Most PDF jobs are small but awkward: a file too big for an upload form, three scans that should be one document, a page that came out sideways, a report that needs page numbers or a password.
All pdf tools →16 tools
Quick image jobs rarely justify opening a full photo editor: shrinking a picture for an upload form, cropping to a square, hiding a number before sharing a screenshot, or opening an iPhone photo on a PC.
All image tools →43 tools
Converters translate a value or file from one format into another: a WebP picture into a JPG, miles into kilometers, a HEX color into HSL, a Unix timestamp into a date.
All converters →23 tools
Text tools handle the small, repetitive jobs around writing: counting words against a limit, fixing the case of a headline, removing the line breaks a PDF adds, comparing two drafts or sorting a pasted list.
All text tools →33 tools
Small jobs that interrupt real work: pretty-print a minified API response, find the trailing comma that breaks a config file, read the claims inside a token from a failing login, see when a cron line will really fire, or convert CSS units.
All developer tools →More: Generators, Minifiers, SEO Tools, Validators, Network Tools, Social Media Tools, Video Tools, AI Tools.
Hand-picked starting points with what each is best for.
Calculate your Body Mass Index (BMI) based on height and weight.
Best for checking body mass index for personal health tracking
See how savings and monthly deposits grow with compound interest, with a chart and a year-by-year table.
Best for planning long-term investment growth
Work out the monthly payment, total interest and payoff date of any loan, and see how extra payments cut the cost.
Best for comparing loan offers from different lenders
Seven percentage calculations in one place, each with the working shown.
Best for working out a tip, commission or share of a total
Convert between 180+ world currencies using real exchange rates.
Best for checking exchange rates for international travel
Convert between length, weight, volume, temperature, and more units.
Best for converting measurements for cooking and baking
Generate strong, secure passwords with customizable length and character types.
Best for creating strong passwords for new accounts
Count words, characters, sentences, and paragraphs in any text.
Best for checking word count for essays, articles, and blog posts
The latest tools to join the collection.
Get an image under 200 KB with detail intact.
Best for uploading product photos to an online shop or marketplace
Get an image under 100 KB while keeping it sharp.
Best for uploading photos to a job, college or government form with a 100 KB limit
Get a photo under 50 KB as a JPG for upload forms.
Best for uploading a profile or ID photo to an application portal
Get a photo or signature under 20 KB as a JPG.
Best for uploading a passport-size photo to an application form with a small file cap
Shrink a PDF to under 1 MB with the least quality loss.
Best for submitting an assignment or thesis chapter to a portal with a 1 MB cap
Shrink a PDF to under 500 KB for email and forms.
Best for emailing an invoice, statement or contract to a client whose server limits attachments
Shrink a PDF to under 200 KB for application portals.
Best for attaching a CV and a certificate to a job application form
Shrink a PDF to under 100 KB for strict upload limits.
Best for uploading a marksheet or certificate to a portal with a 100 KB cap
Plain-language guides behind the calculators, PDF tools and converters.
Why 7% quarterly is really 7.19% a year, how monthly, quarterly and yearly compounding differ on a 1 lakh deposit, and how to compare FD offers fairly.
Read the guide →How to turn an hourly rate into an annual salary and a salary into an hourly rate, why 2,080 hours is only a starting point, and how unpaid weeks change the answer.
Read the guide →The right formula for adding sales tax and for backing it out of a receipt total, why subtracting the percentage is wrong, and how rounding and quantities work.
Read the guide →How to add GST or VAT to a price, take it out of a tax-inclusive total, and split Indian GST into CGST and SGST or IGST, with worked examples.
Read the guide →The 30% rule explained with real numbers, why a 36% debt limit can lower your budget, how to work backwards from a rent, and when the rule of thumb fails.
Read the guide →How to work out the time to reach a target, the monthly amount for a deadline, and how much interest really adds, using worked examples and the formula behind them.
Read the guide →Calculators show the formula and a worked example, and the guides explain the assumptions. You can reproduce any figure by hand.
Most tools work on your device, so documents, photos and text are not uploaded. The 9 lookup tools that contact another service say so.
Every tool page lists what it cannot do and how far to trust the result, instead of promising perfect output.
Learn how we build and test the tools in our editorial standards, or read about FreeToolsVerse.
Yes. Every tool is free to use and none needs an account. We may show advertising to help cover the cost of running the site, and it never changes a tool's result.
No. Open a tool and use it. There are no sign-up walls, credits or usage limits.
Most tools (287 of 296) process what you enter inside your browser, so files and text are not uploaded. A few lookup tools, such as DNS, WHOIS and HTTP status checks, have to contact another service, and each of them says so on its page. See the privacy policy for details.
Calculator formulas are checked against worked reference examples, and file tools are tested with real files before each release. Each tool page lists its limitations, and our editorial standards explain the process.
Yes. The tools and pages are designed to work on desktop, tablet and mobile browsers.
296 tools in 14 categories: calculators, PDF tools, image tools, converters, text tools, developer tools, generators, SEO tools, validators, minifiers, network tools, video tools, social media tools and AI tools.