CATEGORY · PRISMA SPACE
Online utilities for calculations, conversions, and QR codes
Not all tasks require a complex editor. Sometimes you just need to convert a unit, calculate a percentage, compare dates, create a QR code, or check a color combination. This category groups direct utilities to resolve those operations from the browser.
WHAT YOU CAN DOCalculate and ConvertSolve percentages, expressions, date differences, time zones, currencies, and units with explicit inputs.Browse tools ↗
WHAT YOU CAN DOCreate CodesGenerate QR codes and barcode codes from the data you want to represent and check the result before printing it.Browse tools ↗
WHAT YOU CAN DOVerify detailsCheck color contrast, palettes, and other practical values for design and daily work.Browse tools ↗
AVAILABLE CATALOG
Explore 14 tools and operations
Each page explains the expected result, steps, and limitations. Beta features are identified before you open them.
Create QR Codes from Links or TextGenerate a downloadable QR code in PNG to share a web address or text.Available · Local processing · Open tool ↗
Currency Reference ConverterEstimate the equivalent amount in another currency before comparing amounts expressed in different currencies.Available · Connected service · Open tool ↗
Unit Conversion ToolConvert lengths, masses, areas, volumes, speeds, digital data, and temperatures from a single form.Available · Local processing · Open tool ↗
Convert Unix Timestamp to DateInterpret technical log dates or convert an ISO date to Unix seconds and milliseconds for integrations.Available · Local processing · Open tool ↗
Color Palette GeneratorGet five HSL colors as a starting point to explore a visual identity or background.Available · Local processing · Open tool ↗
Random Number GeneratorGet integers within a range for examples, exercises, or test data.Available · Local processing · Open tool ↗
Math Expression CalculatorSolve operations with parentheses and exponents to verify everyday calculations.Available · Local processing · Open tool ↗
Percentage Calculator and VarianceCalculate a percentage of an amount or compare how much a value has changed from its initial value.Available · Local processing · Open tool ↗
Calculate days between two datesMeasure the calendar date separation to plan periods or compare events.Available · Local processing · Open tool ↗
Convert a Time to Another Time ZoneSee how a local date and time is represented in one of the available cities.Available · Local processing · Open tool ↗
Check Color Contrast WCAGEvaluates whether two text and background colors meet the contrast thresholds for normal text.Available · Local processing · Open tool ↗
Read a QR Code from an ImageRetrieve the text or link contained in a saved QR code image or capture.Beta · In your browser · Open tool ↗
Barcode GeneratorCreate a PNG representation of a test label or internal workflow identifier.Available · Local processing · Open tool ↗
Create a Contact QR Code vCardShare your name, phone number, email, and organization in a QR code that a compatible reader can interpret as contact information.Beta · In your browser · Open tool ↗
FREQUENTLY ASKED QUESTIONS
Common questions
Does the currency converter use real-time rates?
Check the date and source shown by the tool. Reference exchange rates may be delayed and do not equate to a bank quote.
Can QR codes be used commercially?
You can download the result, but verify that the encoded content is correct and the destination remains available.
Do the calculators replace professional reviews?
No. For financial, tax, medical, or legal decisions, verify the results with suitable sources and professionals.