🧰 What it is
A free toolbox for everyday life and work: 293 calculators, converters, text and developer utilities, and generators, plus 79 private databases — and guided helpers for courts, disability, and federal benefits. One clean home for the little tools you keep looking up.
⚙️ How it works
There is no server and no database of yours anywhere. Every tool runs on your own device as fast WebAssembly. Use it right in your browser, or install it as an app and keep using it with no internet at all. What you type stays with you.
🔓 Free vs. GG Pro
Most tools are free forever — knowledge should be. GG Pro is a small set of professional modules (security & compliance auditors, inspection, court, and benefits organizers). Buy just the ones you need and own them forever, or subscribe month to month.
🛡️ Your privacy
No accounts, no ads, no trackers on the free tools. Your files and inputs never leave your device — the only thing ever sent is a suggestion you choose to type. Read the privacy promise →
Find a tool
Type to search everything at once — or browse below: tap a category to open it.
★ Start here — popular picks
12Percentage Calculator
what is X% of Y
Tip Calculator
tip + split a bill
Compound Interest
future value with contributions
Loan / Amortization
monthly payment + schedule
Hourly → Salary
annualize an hourly rate
BMI
body mass index + category
Length Converter
m, km, miles, feet, inches…
Temperature Converter
°C, °F, K — Celsius, Fahrenheit, Kelvin
Date Difference
days/weeks between two dates
Word Counter
words, characters, lines, reading time
Password Generator
strong random password
JSON Formatter
pretty-print or minify + validate
★ Your favorites
0Converters
18
Length Converter
m, km, miles, feet, inches…
Weight Converter
kg, lb, oz, grams, stone…
Volume Converter
liters, gallons, cups, ml…
Area Converter
m², ft², acres, hectares…
Speed Converter
mph, km/h, m/s, knots…
Time Converter
seconds, minutes, hours, days…
Data Size Converter
B, KB, MB, GB, KiB, MiB…
Data Rate Converter
bps, Kbps, Mbps, Gbps…
Pressure Converter
Pa, bar, psi, atm, mmHg…
Energy Converter
J, kJ, cal, kWh, BTU…
Power Converter
W, kW, hp, MW…
Angle Converter
degrees, radians, gradians…
Frequency Converter
Hz, kHz, MHz, GHz, rpm…
Cooking Converter
cups, tbsp, tsp, ml, oz…
Temperature Converter
°C, °F, K — Celsius, Fahrenheit, Kelvin
Number Base Converter
binary, octal, decimal, hex
Roman Numerals
number ↔ Roman numeral
Fuel Economy
MPG ↔ L/100km ↔ km/L
Calculators
33
Percentage Calculator
what is X% of Y
Percent Change
% increase / decrease
Is What Percent
X is what % of Y
Discount Calculator
sale price after % off
Tip Calculator
tip + split a bill
Sales Tax
add tax to a price
Average / Mean
mean, median and mode of a list
Aspect Ratio
solve missing dimension
Screen PPI
pixels per inch of a display
Ratio Simplifier
reduce a ratio to lowest terms
Fraction → Decimal
numerator ÷ denominator
Final Grade Needed
score needed on the final
Weighted Average
values × weights
Standard Deviation
mean, variance, σ
Circle
area, circumference from radius
Right Triangle
hypotenuse + angles from a, b
Speed · Distance · Time
time from distance & speed
Density
mass ÷ volume
Ohm's Law
V, I → resistance & power
Recipe Scaler
scale an ingredient by servings
Quadratic Solver
roots of ax² + bx + c
GCD & LCM
greatest common divisor + LCM
Prime Checker
is it prime? + prime factors
Factorial
n!
Permutations & Combinations
nPr and nCr
Power / Root
base^exp and the exp-th root
Logarithm
log in any base + natural log
Distance Between Points
2D distance + midpoint
Line Slope
slope, angle, y-intercept
Percentage Error
measured vs actual
Rounding
round to N decimals / sig figs
Area of Shapes
rectangle, triangle, circle, trapezoid
Volume of Shapes
box, cylinder, sphere, cone
Finance
30
Loan / Amortization
monthly payment + schedule
Mortgage (PITI)
principal+interest+tax+insurance
Compound Interest
future value with contributions
Simple Interest
principal × rate × time
Savings Goal
months to reach a target
Debt Payoff
months + interest to clear a balance
ROI
return on investment %
Rule of 72
years to double your money
Break-Even
units to cover fixed costs
Margin & Markup
from cost + price
Markup → Price
price from cost + markup %
Hourly → Salary
annualize an hourly rate
Salary → Hourly
hourly from an annual salary
Currency (manual)
convert at a rate you set
Inflation
future cost at an inflation rate
Unit Price
price per unit for comparison
CAGR
compound annual growth rate
50/30/20 Budget
needs / wants / savings split
Net Worth
assets − liabilities
Emergency Fund
target from monthly expenses
Overtime Pay
regular + overtime gross
Cost Per Use
is it worth buying?
APR ↔ APY
nominal ↔ effective annual rate
Debt-to-Income
DTI ratio
Rent Affordability
max rent (30% rule)
FIRE Number
retire target (4% rule)
Sales Commission
commission on a sale
Present Value
today's value of future money
Is the Second Income Worth It?
what a second job actually leaves after childcare, tax and the commute
Debt Payoff Order (avalanche vs snowball)
which debt to pay first, simulated month by month
Business & Trades
22
Shop Rate Calculator
the hourly rate you must bill
Paint Job Quote
gallons, paint + labor cost
Landed-Cost / COGS Calculator
true per-unit landed cost
Recipe & Plate Costing
cost per plate + menu price
Earthwork Cut & Fill Volume
average-end-area volume
Insurance Policy-Limit Gap
underinsurance + coinsurance check
Powder Coating Quote
coating + labour cost per part
Customer Win-Back Value
is chasing a lapsed customer worth it
ARM Payment Shock
what the payment becomes at reset
Rate Comparison (Side by Side)
two financing offers, total cost
Commission Split & Cap Calculator
one closed deal, every line itemised
ARM Reset Projector
what your adjustable rate does when it resets
Loan Side-by-Side
compare up to 4 offers on total cost, with break-even
Refinance Screener (client book)
screen a whole book of loans against one rate you enter
Tax Lot & Cost Basis Calculator
match sells to lots (FIFO/LIFO/HIFO/spec-ID) and see the basis
Wash-Sale Flagger
flags loss sales with a same-symbol buy in the 61-day window
Document Mail Merge
one finished letter per row, offline — gaps marked, never guessed
Freelance Day Rate
what a target income needs a day of work to carry
Late Payment Interest & Statement
what you are actually owed, invoice by invoice, with interest to a date you choose
Treasurer's Report
turn a period of transactions into the statement and the reconciliation
Job Offer Comparison
count what two offers are really worth, per year and per hour
Car Total Cost of Ownership
compare up to 4 vehicles on what they really cost to run
Benefits & Aid
5
BenefitStack Navigator
screen one household across programs
CliffEdge — Benefit Cliff Finder
does this raise cross a benefit cliff?
PlanTrueCost — ACA Plan Cost
premium after subsidy + out-of-pocket
RepaySmart — IDR Payment Compare
monthly payment under each federal plan
Federal Bankruptcy Exemptions
what property bankruptcy protects
Home
37
Meal Plan to Grocery List
turn a week of meals into one consolidated shopping list
Recipe Batch Scaler
rescale ingredient quantities for a different number of servings
Party Quantity Planner
planning estimates for food, drinks, ice and tableware
Chore Rota Builder
fair weekly chore rotation
Home Maintenance Calendar
12 months of seasonal home prompts
Car Service Due
miles and months since the last service
Packing List Builder
a categorised list sized to your trip
Volunteer Rota Builder
a rota that respects who is away
Reproducible Fair Draw
draw names from a seed anyone can re-run
Subscription Audit
what your subscriptions really cost per year
Moving House Checklist
a week-by-week countdown to moving day
Homeschool Transcript Builder
courses in, formatted transcript and correct GPA out
Time Estimate Calibrator
your own estimate-to-actual multiplier
Home Fall-Hazard Walkthrough
room-by-room hazard checklist, prioritised fix list, printable
Chore & Allowance Chart
rotating chores with the money added up
Study & Revision Planner
sessions spread across the days you have left
Garden Planting Calendar
sowing and planting dates from your own frost dates
Paint Needed
gallons for a room
Flooring / Tile
tiles + boxes for a floor
Concrete
cubic yards for a slab
Electricity Cost
running cost of an appliance
Fuel Trip Cost
cost of a drive
Download Time
how long a file takes
Mulch / Soil
cubic yards for a bed
Room AC BTU
AC size for a room
Board Feet
lumber volume
Stair Calculator
risers, tread, run length
Tank / Pool Volume
gallons in a container
Settle Up (who pays whom)
turn a pile of shared expenses into the fewest payments
Fair Rent Split (unequal rooms)
four ways to split rent between unequal rooms, side by side
Pet Care Handover Sheet
printable handover sheet for a sitter, kennel, neighbour or friend
Round-Robin Fixture List
everyone plays everyone: rounds, byes, home and away counts, blank results table
Household Emergency Plan & Go-Bag
printable household plan: meeting points, contact cards, go-bag list
Committee Meeting Pack
printable agenda + minutes skeleton + action list for a small group
Who to Notify & What to Close
printable working checklist of who to tell when someone dies, and what to close
Home Improvement Payback
does the quoted saving actually cover the quoted cost
Event & Wedding Budget
your own quotes, totalled at two guest counts
Health
24
Workout Split Planner
lay a split out across the weeks, rest days spread evenly
Weekly Routine Planner
spread your weekly activities across seven days
Habit Stack Builder
chain new habits onto one you already have
Communication Board Builder
printable AAC/PECS word board
About Me — Emergency Profile
one printable page about a person who may not be able to explain themselves
Daily Orientation & People Cards
printable dementia day sign, routine, people and door-label cards
Decodable: reading reformatter
reformat pasted text for easier decoding
Medical History Timeline
one printable chronological page for a specialist
Appointment Prep Sheet
one page to take in, and one half to fill in while you are there
BMI
body mass index + category
BMR / TDEE
daily calories (Mifflin-St Jeor)
Macro Split
protein/carb/fat grams
Ideal Weight
healthy weight range (BMI 18.5–25)
Body Fat (Navy)
US-Navy method estimate
Water Intake
daily target from body weight
Running Pace
pace per km & per mile
Max Heart Rate
MHR + training zones
One-Rep Max
estimate 1RM (Epley)
Waist-Height Ratio
cardio-risk screen
Sleep Calculator
bedtimes for full cycles
Calories Burned
from activity MET
Blood Alcohol (est.)
rough BAC — never drive on it
Ovulation Window
fertile days from last period
Pet Age
dog/cat years (rough)
Date & Time
8
Age Calculator
exact age from a birth date
Date Difference
days/weeks between two dates
Add / Subtract Days
date N days from a date
Business Days
weekdays between two dates
Countdown
time left until a date
Due Date
estimate from last period (Naegele)
Time Duration
hours between two clock times
Meeting Time Across Time Zones
one meeting time on everyone's clock, with the day it lands on
Text
39
Word Counter
words, characters, lines, reading time
Case Converter
UPPER, lower, Title, camel, snake, kebab, CONSTANT
Text to Speech
read any text aloud in your browser
Reverse Text
flip the characters
Reverse Words
flip word order
Sort Lines A→Z
alphabetical line sort
Sort Lines Z→A
reverse alphabetical
Sort Numbers
numeric line sort
Dedupe Lines
remove duplicate lines
Remove Blank Lines
strip empty lines
Trim Lines
strip leading/trailing spaces
Number Lines
add 1. 2. 3. prefixes
Shuffle Lines
randomize line order
Slugify
URL-friendly slug
Squeeze Spaces
collapse repeated spaces
Remove Accents
strip diacritics
ROT13
classic letter rotation
Find & Replace
swap all matches
Extract Emails
pull all email addresses
Extract URLs
pull all links
Extract Numbers
pull all numbers
Word Frequency
count each word
Remove Punctuation
strip symbols
Repeat Text
duplicate N times
Text → Binary
encode to 8-bit binary
Binary → Text
decode 8-bit binary
Text → Morse
encode to Morse code
Remove Line Breaks
join into one line
Strip HTML Tags
plain text from HTML
Extract Hashtags
pull #tags
NATO Phonetic
spell it out (Alpha Bravo…)
Reverse Each Line
mirror each line's characters
Caesar Cipher
shift letters by N
Leetspeak
1337-ify your text
Count Occurrences
how many times a word appears
Sort by Length
lines shortest → longest
Lines → Comma List
join lines with commas
Comma List → Lines
split a comma list into lines
Extract Phone Numbers
pull phone-like numbers
Dev & Data
31
CSV Query
filter, sort and pick columns from pasted CSV
CSV Merge & De-duplicate
remove duplicate rows, by key or whole row
CSV Column Summary
row counts, blanks, distinct values and number stats
CSV Chart (SVG)
turn a column of numbers into a bar chart
CSV Report Builder
turn a CSV into a titled, aligned, printable report
Data Dashboard Builder
turn a CSV into KPI cards and charts you can save and share
Spreadsheet Lite (formula evaluator)
evaluate spreadsheet formulas over a pasted CSV grid
SQL Playground
run real SQL over a pasted CSV — entirely in your browser
Survey Builder & Results Tally
write a survey, print it, then tally the answers you get back
JSON Formatter
pretty-print or minify + validate
Base64 Encode
text → base64
Base64 Decode
base64 → text
URL Encode
percent-encode a string
URL Decode
decode percent-encoding
HTML Encode
escape HTML entities
HTML Decode
unescape HTML entities
JSON → CSV
array of objects → CSV
CSV → JSON
CSV → array of objects
JWT Decode
decode header + payload (no verify)
SHA-256
hash text with SHA-256
Query String Parser
?a=1&b=2 → readable list
Timestamp → Date
Unix epoch → readable date
Date → Timestamp
date → Unix epoch
Regex Tester
test a pattern against text
Text Diff
line-by-line difference of two texts
HTTP Status Lookup
what a status code means
Luhn / Card Check
validate a card number checksum
Markdown → HTML
basic markdown to HTML
UTM Link Builder
add campaign tags to a URL
Password Strength
estimate how strong a password is
Bulk Rename & Index Planner
plan a bulk rename + index, offline — nothing is renamed
SEO & Web
13
Meta Tag Generator
title + description → HTML meta tags
Open Graph Tags
Facebook / LinkedIn share preview tags
Twitter Card Tags
X / Twitter share card meta tags
JSON-LD Schema
structured data for Google rich results
robots.txt Generator
build a robots.txt crawl-rules file
SERP Snippet Preview
see your Google result + length limits
Sitemap.xml Builder
paste your URLs → a sitemap.xml
Keyword Density
top keywords + how often they appear
Readability Score
Flesch reading ease + grade level
Heading Outline
extract the H1–H6 structure from HTML
Missing Alt Text
find <img> tags with no alt text
Link Extractor
pull every href out of some HTML
Hashtag Suggestions
turn keywords into shareable hashtags
Web & Hosting
8
Cloudflare Pages Hardener
5 free WAF rules + deploy checklist
Security Headers (_headers)
hardened _headers file for Pages/Netlify
robots.txt + Sitemap
generate robots.txt and a sitemap starter
Web App Manifest
make your site installable (PWA)
CSP Builder
compose a Content-Security-Policy
Favicon Generator (SVG)
monogram SVG favicon + head tags
Redirects (_redirects)
canonical host + path redirects
DNS Records Cheat Sheet
point a domain at Pages + lock email
Generators
14
Random Number
pick a random integer in a range
Password Generator
strong random password
Passphrase
memorable word-based passphrase
PIN
random numeric PIN
UUID v4
batch of random UUIDs
API Key
random hex token
Lorem Ipsum
placeholder paragraphs
Dice Roller
roll N dice of S sides
Coin Flip
heads or tails
Random Pick
pick one from a list
Random Color
random hex + preview
Random Team Picker
split names into N teams
Random Emoji
grab a few random emoji
Business Name Ideas
brandable name combos
Color
9
Color Picker
pick a color → hex, rgb, hsl
Hex → RGB
convert a hex color
RGB → Hex
convert rgb values
Contrast Checker
WCAG contrast ratio of two colors
Shade Generator
tints & shades of a color
Random Palette
5 harmonious colors
RGB / HSL Converter
convert a color to rgb + hsl
CSS Gradient
two colors → CSS gradient + preview
CSS Box Shadow
design a box-shadow + preview
Motherhood & Baby
2
Data & databases
79
Personal CRM
contacts, notes & follow-ups on your device
Address Book
contacts with groups & export
Inventory Manager
stock, quantities & values
Expense Ledger
transactions & categories
Client & Project Tracker
pipelines, deadlines & status
Recipe Database
recipes with tags & scaling
Media Library Catalog
books, films & games
Collection Manager
catalog anything you collect
Maintenance Log Book
service records with due dates
Membership Roster
members, dues & renewals
Event & RSVP Tracker
guest lists & RSVPs
Asset Register
equipment, warranties & value
Habit & Streak DB
track habits with a done flag
Email List Manager
segments & tags, no ESP lock-in
Invoice Database
invoices, clients & payment status
Order & Sales Log
orders, fulfillment & revenue
Support Ticket Tracker
log, prioritize & resolve issues
Appointment Scheduler DB
bookings & availability
Fleet & Vehicle Log
mileage, service & fuel
Grade Book
students, assignments & grades
Attendance Tracker
roll call & absence stats
Donor & Donation DB
gifts, donors & year-end
Menu & Price DB
products, prices & specials
PTO / Time-Off Tracker
requests, balances & approvals
Shift Scheduler DB
rosters, shifts & swaps
Loyalty / Punch-Card DB
points & redemptions
Time-Tracking DB
hours by client & project
Bookmark Manager
save, tag & search links
Second-Brain Notes DB
tagged notes with search
Key-Value Store
a private key/value database
Form Builder + Responses
collect responses locally
Kanban Board DB
cards & columns for tracking
Private Wiki
linked pages with full-text search
No-Code Database
a private mini-Airtable
Seizure Log
a written seizure history for your neurologist
Migraine Log
attacks, triggers, medication and relief
Blood Pressure Log
home readings, in context, ready to hand over
Blood Glucose Log
readings with food, insulin and activity beside them
Chronic Illness Flare Log
flare start, end, severity and impact on daily life
Symptom & Trigger Log
symptoms beside food, activity and environment
Lab Result Tracker
your own copy of every result, over time
Sleep & Mood Log
sleep, mood and energy day by day
Pedigree & Breeding Record
animals, parentage, registrations and health testing in one place
Scholarship & Award Tracker
every application, its deadline and what it still needs
Land & Parcel Ledger
parcels, acreage, tax accounts and what's attached to the title
Continuing Education Credit Tracker
courses, hours and which licence each one counts toward
Shared Expense Splitter
who paid, how it splits, who owes and whether it's settled
Task & Focus Planner
one next action, one honest estimate, no scoring
Gift & Occasion Tracker
who, what, how much — and what you already bought them last year
Home Inventory (for insurance)
the list of what you own, made before you need it
Important Dates & Renewals
birthdays, renewals, inspections and expiry dates in one list
Grant Pipeline Tracker
every opportunity you're chasing, and what stage it's at
Grant Reporting Calendar
what you owe each funder after you've won
Funder Relationship Log
who you've talked to, when, and what they said they care about
Prepaid Session & Package Tracker
who has paid for sessions they haven't taken yet
Medical Binder & ER Grab Sheet
one person's whole medical picture, ready to hand over
Pedigree, Health-Test & Litter Records
pedigrees, health tests and where every animal went
Complaint & Dispute Record
every call, every promise, every reference number
Job Application Tracker
where you applied, what you sent, and what came back
Equipment Loan Log
what went out, to whom, and what came back
Key & Access Register
who holds a key, and who signed for it
Newborn Diaper Log
wet & dirty nappies, checked against the CDC's daily minimum
Pumping Log
sessions, sides and volumes, totalled per day
Nursing & Feeding Log
feeds per day against the CDC's 8-12 in 24 hours
Water Intake Log (for mum)
your own drinks, against the official lactation figure
Control Evidence Register
every control, its owner, and the evidence you can actually produce
Risk, Aspect & Hazard Register
the register an auditor opens first, with its actions tracked to closure
Certificate & Equipment Register
what is certified, when it expires, and what is already overdue
Tenancy & Deposit Register
every tenancy, its term end, and the deposit you can evidence
Medical Evidence & Contact Log
every provider, request and record - and the date from your own notice
Findings & Recommendations Register
findings, management's answer, the owner, and whether it ever closed
Claim Evidence & Correspondence Index
what you sent, when you sent it, and what they promised back
Client & Job Register
quote to delivered to invoiced to paid, with the gaps showing
Employee Record Register
who works here, from when, and what was actually issued and checked
Incident & Contact Chronology
somewhere to actually write them down, dated, in your own words
Filing & Service Register
what was filed, how it was served, and whether proof went back to the court
Estate Document & Contact Register
where everything actually is, and who to ring
Work Order Register
who asked for what, who it went to, and whether it was ever done
Job & Site Register
which job, which site, what was permitted, and who signed it off
📥 Take it with you — yours to keep
Everything free here is free to keep, not just to visit. Install this site as an app (browser menu → “Install app” / “Add to Home Screen”) and it keeps working with no internet. Want the whole toolbox guaranteed on this device? Save every free tool offline below — after that, all 293 tools and 79 databases run here permanently, connection or not.
Honest notes: the copy lives in this browser's storage (we ask the browser to make it persistent, but clearing site data removes it — saving again is free). GG Pro modules stay locked to their license key; Pro subscriptions do a quick online check about once a month, while Pro perpetual licenses work offline forever.
☕ Free is the point — but if you want to chip in
Every tool on this page is free and stays free. There's no account, no ads and no trackers, and that isn't a trial — it's the whole idea. If these have saved you real time and you'd like to put something in, name your own amount. A few dollars is genuinely plenty.
Please don't buy a GG Pro pack just to be supportive — Pro is built for people doing audits, inspections and court paperwork, and if that isn't you it'll sit unused. Chip in here instead, and keep your money if you'd rather. Nothing here is locked, and this unlocks nothing.
Secure card checkout via Stripe. Goes to Torsova LLC, the company behind this site — it's a voluntary tip, not a charitable donation, so it isn't tax-deductible.
💡 Suggest a tool
Tell me what you wish existed. If enough people ask for the same thing, I build it. Only what you type here is sent — no account, no tracking, no ads.