All tools

50 tools across 12 categories. All run on your device, with methods and sources included.

Filter tools

50 tools

Sort

Money

8 tools

Mortgages, loans, interest, salary and retirement. Every figure is an estimate you can check, with the formula published beside it.

APR and APY Calculatorhow do i convert a nominal rate to an effective annual rate Compound Interest Calculatorhow much will my savings grow in 10 years Credit Card Payoff Calculatorhow long will it take to pay off my credit card Inflation Impact Calculatorwhat will my money be worth after inflation Loan Repayment Calculatorhow much will a 12000 loan cost me a month Mortgage Repayment Calculatorhow much will my mortgage repayments be each month Profit Margin Calculatorhow do i work out profit margin from cost and price Savings Goal Calculatorhow much do i need to save each month to reach my goal

Country-specific

7 tools

Income tax, take-home pay, VAT and property costs, with the rules and rates for one country at a time and the year they apply to.

Austrian VAT Calculatorhow much is 20 percent austrian umsatzsteuer German VAT Calculatorhow much is 19 percent german vat on a net price Iranian VAT Calculatorhow do i work out iranian vat at 10 percent Irish VAT Calculatorhow do i work out irish vat at 23 percent backwards Swiss VAT Calculatorhow do i work out swiss mwst at 8.1 percent UK VAT Calculatorhow much vat is in a uk price at 20 percent VAT Calculatorhow to work out vat backwards from a gross price

Health & body

3 tools

Body metrics, training loads and pacing. Numbers about your body, never a diagnosis or a recommendation.

BMI Calculatorwhat is my bmi and what should i weigh for my height Running Split Plannerrunning pace split calculator TDEE Calculatorhow many calories do i need a day to maintain my weight

Maths

3 tools

Percentages, ratios, conversions, geometry and statistics, worked out step by step.

Fraction Simplifiersimplify 45/60 to its lowest terms Percentage Calculatorwhat is 15 percent of 200 Ratio Table Makermake a ratio table

Image

4 tools

Compress, convert, resize, crop and clean up images. Your files stay on your device — there is nothing to upload them to.

Image Metadata Removerremove metadata from an image Image Resizerresize an image without uploading it anywhere Image to WebP Converterconvert png to webp and make it smaller PNG to JPEG Converterconvert png to jpg without a black background

Documents

4 tools

Merge, split, sign and extract from PDFs, and convert between spreadsheet formats. All of it in the page, none of it on a server.

Markdown Table of Contents Makergenerate a table of contents for Markdown Text Line Sorter and Deduplicatorsort and remove duplicate lines from a text file Word and Character Counterhow many words and characters is this text ZIP File Creatorcreate a zip file without uploading files

Print

3 tools

Graph paper, planners, calendars, labels and games, generated to exact dimensions and ready for A4 or Letter.

Printable Graph Paper Plannerhow many 5mm squares fit on a sheet of a4 Printable Month Calendar Plannerhow many rows does a printed month calendar need Printable Ruled Paper Makerprintable lined paper maker

Time & focus

3 tools

Timers, clocks, timezone maths and focus tools that keep running while you work.

Date Difference Calculatorhow many working days between two dates Pomodoro Timerhow long does 8 pomodoros take Recurring Date Schedule Makerrecurring date schedule generator

Generators

4 tools

QR codes, barcodes, passwords, palettes and randomisers, generated on your device.

Colour Palette File Makermake a color palette CSS file File Checksum: SHA-256 and SHA-1check the sha256 checksum of a downloaded file Password Generatorgenerate a strong random password without a website seeing it UUID Batch Generatorgenerate multiple UUIDs

Text

4 tools

Counting, converting, comparing and cleaning text, without pasting it into somebody else’s server.

Case Converterconvert a heading to proper title case Subtitle Time Shiftershift subtitle timing without uploading the file Text Diff Makermake a unified diff between two texts Text Encoding Converterconvert a text file to UTF-8

Audio

3 tools

Metronome, tuner, tempo and simple editing, built on the Web Audio API with no dependencies.

WAV Audio File Inspectorwhat sample rate and bit depth is this wav file WAV Audio Trimmertrim a wav file without uploading it WAV Volume Adjustermake a WAV file quieter

Data & charts

4 tools

Charts, diagrams and timelines from data you paste, rendered as files you can take away.

CSV Column Selectorkeep selected columns from csv without uploading CSV to JSON Converterconvert csv to json without uploading JSON Formatterformat a JSON file JSON to CSV Converterconvert a json array to csv for excel