Tools
A separate Ormaven Network branch for free calculators, generators and practical utilities.
Money & calculators
Discounts, VAT, loans, percentages and practical price calculations. Browse category →
Discount Calculator
Original price + percentage discount = final price and savings.
Fuel Consumption Calculator
Uses distance and fuel used to calculate consumption and optional trip cost.
Loan Payment Calculator
Annuity payment from principal, annual interest and term.
Percentage Calculator
Calculate a percentage of a number, find what percent one value is of another, or measure percentage change.
Ecommerce Profit Calculator
Check what remains from one order after variable costs, fees, shipping and acquisition spend.
VAT Calculator
Convert net ↔ gross price using your own VAT rate.
Date, time & travel
Dates, age, business days, timers, speed and distance. Browse category →
Add / Subtract Days
Choose a date, number of days and direction.
Age Calculator
Calculate age today or on another date, plus a years-months-days breakdown and the next birthday.
Business Days Calculator
Date difference plus Monday-to-Friday business-day count.
Date Difference Calculator
Find the distance between two dates in days, weeks and calendar years, months and days.
Speed · Distance · Time
Choose the unknown value and enter the other two.
Stopwatch & Countdown
Use one lightweight tool as a stopwatch or a countdown timer.
Text & lists
Cleanup, sorting, counting, transformation and quick text work. Browse category →
Case Converter
Switch text between uppercase, lowercase, title case, sentence case and toggled case.
List Shuffler
Paste a list and randomise its order in one click.
List Sorter
Each line is one item. Choose how to sort it.
Remove Duplicate Lines
Clean a pasted list by removing repeated lines while preserving the first occurrence.
Text Cleaner
Quickly clean text before copying or processing it.
Word & Character Counter
Paste text and instantly count words, characters, lines and approximate reading time.
Word Frequency Counter
Counts word occurrences and lists the most frequent items.
Random & generators
Random picks, dice, names, passwords, PINs and other generators. Browse category →
Coin Flip
Heads or tails — one flip for a decision, or several flips for a quick experiment.
Dice Roller
Quick dice for board games and a classic Dračí doupě mode with your own character diary.
Letter Shuffler
Mix the letters of a word or phrase into several random rearrangements.
Password Generator
Create strong random passwords locally — with length and character sets under your control.
PIN & Password Generator
Generate a random PIN and a strong password together, without sending either value to a server.
Random Name Generator
Generate random first-name ideas for characters, mockups, examples and games.
Random Number Generator
Generate random numbers in a range, with optional decimals and unique results.
Random Picker
Paste names, tasks, restaurants or any options and let Ormaven pick randomly.
Random Team Generator
Turn a list of people into randomly shuffled, balanced teams.
Username Generator
Generate quick username ideas without sending any personal data anywhere.
Words from Letters
Enter a set of letters and find common words that can be made without using a letter more times than available.
Just for fun
Apocalypses, excuses, fantasy creatures, band names and small missions. Browse category →
Absurd Invention Lab
From plausible household hacks to hilariously overengineered machines and pure science fiction. Pick a domain and realism level, then reveal the mechanism, parts, limitations and slogan.
Apocalypse Machine 2.0
Start a ridiculous disaster, make three decisions and see how hope, supplies and chaos reshape civilization. Eight stories, five endings.
Band name generator
Turn a mug, a charger or anything on your desk into a band name, genre and first album.
Broken RPG Quest
Four badly designed adventures, four delightfully unqualified heroes and one twenty-sided die. Make terrible decisions, roll d20 and discover what goes wrong next.
Corporate Bullshit Bingo
Survive one more meeting with a 5×5 board of office buzzwords. Tap phrases, complete up to 12 bingo lines, bring your own phrase list, or print a card.
Absurd excuse generator
Excuses for work, school and social plans. The less believable, the better.
Fantasy creature generator
Invent a creature with an unexpected talent, an unusual home and a dash of chaos.
Random small mission
Let chance pick a small idea for a pleasant break. Tea, drawing or a little moment of joy.
Startup in 30 Seconds
Invent a startup and pitch it in 30 seconds. Pick an industry and absurdity level, then reveal a coherent product, target customer, business model, risks and investor challenge.
What If…?
What if gravity stopped on Tuesdays, nobody could lie, or plants won elections? Change one rule of reality, make three decisions and face the consequences.
What should I eat?!
From sensible home cooking to outrageously cheesy comfort food. Choose a mood, time and budget for a recipe you can really cook.
The World's Worst Restaurant
Serve five shifts of glorious chaos: pick a menu, hire a crew, handle the weirdest guests and keep your restaurant alive. Every choice matters.
Converters & media
Units, aspect ratio, QR codes and color utilities. Browse category →
Aspect Ratio Calculator
Get a simplified ratio from width and height and calculate a matching height.
HEX / RGB Color Tool
Random color, HEX → RGB and RGB → HEX in one tool.
QR Code Generator
Turn text or a link into a scannable QR code.
Unit Converter
Convert common units of length, mass, temperature and volume without searching for a formula.
Image tools
Private image resizing, compression, conversion and cropping in your browser. Browse category →
Compress Image
Reduce image file size with WebP or JPG and adjustable quality. Everything runs locally.
Image Converter
Convert between PNG, JPG and WebP directly in your browser. Free and no sign-up required.
Crop Image
Crop images to square, 4:3, 16:9 or portrait. Set crop focus and export locally.
Remove Image Metadata
Re-encode an image locally to strip common EXIF and other embedded metadata. No uploads.
Resize Image
Resize JPG, PNG or WebP images without uploading. Keep aspect ratio and download the new image.
Developer tools
UUID, JSON, Base64, slugs and small utilities for development. Browse category →
Practical professional tools
Calculators and quick checks for quality, manufacturing and processes. Browse category →
Automation Opportunity Scan
A guided assessment for finding repetitive work, estimating potential value and turning opportunities into a prioritized action list.
Cp & Cpk Calculator
Calculate process capability in seconds and see which specification side is limiting your Cpk.
FMEA RPN Calculator
Calculate RPN from Severity, Occurrence and Detection without turning the number into a false universal acceptance limit.
ISO 9001 Readiness Quick Check
A guided, browser-only assessment that turns 18 practical questions into a readiness overview, focus areas and three next actions.
OEE Calculator
Break OEE into Availability, Performance and Quality so you can see which loss is pulling the result down.
Pp & Ppk Calculator
Check long-term process performance against specification limits and see which side is limiting Ppk.
PPM & DPMO Calculator
Separate defective units from individual defects and convert both into comparable per-million quality metrics.
5×5 Risk Matrix
Turn severity and likelihood into a simple 5×5 risk score for quick prioritisation and discussion.
Takt Time Calculator
Turn available production time and demand into the required production rhythm — seconds per unit and units per hour.
8D Report Builder
Build a structured eight-discipline problem-solving report and keep evidence visible.
5 Whys Analysis
Turn a problem statement into structured questions, evidence and a proposed action.
Pareto Analysis
Sort problem categories by frequency and reveal cumulative percentages, directly in your browser.
Yield & FPY Calculator
See how much output passes first time and how much of the final yield is being recovered through rework or sorting.
Tell us what tool we should build.
Tell us what is missing from your work or everyday tasks, what could be simpler, or what we should improve in this tool. If it makes sense, we will try to build it.
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