Hello
—
00:00
23 toolsOfflinePrivate
All tools
Appearance
Theme
Accent color
Larger textIncrease font size everywhere
AnimationsTransitions & motion effects
Behavior
HapticsVibration feedback (supported devices)
SoundsTimer alarms & UI sounds
Confirm destructive actionsAsk before delete / huge exports
Auto-copy resultsCopy generated output automatically
Data
Stored data—
UltiBox v3.1 Ultimate
23 tools · runs 100% offline · no data leaves your device
Calculator
0
Unit Converter
From
To
—
Percentage
X% of Y
of
—
X is what % of Y
of
—
Change from X to Y
→
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Age Calculator
Date of birth
Health Calc
QR Studio
Content
Enter content to generate
Contact Maker
Details
Country
First №
How many contacts
Name format
Voice Studio
Speak
Engine
Voice
Speed1.0×
Pitch1.0
Base64
Input
Output
JSON Tools
Ready
Output
Code Lab
Console / Report
Output appears here. JavaScript actually runs in a sandbox.
Hash Generator
UPPERCASE
Morse Code
Text → Morse
Output
Speed15 wpm
Reference
Walkie-Talkie
Channel ULTIBOX-1Online 1
Open UltiBox in another tab or window of this browser to talk.
Messages
Voice travels via this browser's local channel (works between tabs/windows on this device). True radio range needs a network server — this build is fully offline by design.
Phone Codes
Text Tools
Color Studio
HEX
RGB
HSL
Tints & shades
Palette
Passwords
••••••••
—
Length16
Uppercase (A–Z)
Lowercase (a–z)
Digits (0–9)
Symbols (!@#$…)
Avoid ambiguous (Il1O0)
Timer & Stopwatch
00:00.00
World Clock
Notes
Randomizer
Random number
to
?
Coin flip
H
T
—
Dice
Pick for me
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Flashlight
Maximum brightness white screen. Also attempts the real camera LED where supported.