34 TOOLS · NO SIGNUP
Free online tools for everyday tasks
Choose a calculator, converter, generator, image tool, text utility, or developer tool. Every page focuses on one job and opens without an account.
Find the right tool quickly
Orenvu brings common online tasks into one clean workspace. Use the links below to open a focused tool, complete the task, and continue working without creating an account.
34 tools found
Online Calculators
Solve everyday number problems with focused calculators for money, school, health estimates, dates, measurements, and work.
Break-Even Calculator
Find the monthly sales needed to cover fixed costs and reach a profit target. Enter price and variable costs for a free, private break-even calculation.
Open tool CalculatorGPA Calculator
Estimate credit-weighted GPA on a 4.0 scale. Enter valid grade points and credits, add or remove courses, and see quality points with clear input errors.
Open tool CalculatorCelsius to Fahrenheit Converter
Convert Celsius to Fahrenheit or Fahrenheit to Celsius instantly. Enter any temperature and get an accurate result in both directions.
Open tool CalculatorMortgage Calculator
Estimate monthly mortgage principal and interest plus property taxes, homeowners insurance, mortgage insurance and HOA dues. See a clear housing-cost breakdown.
Open tool CalculatorCalorie Calculator
Estimate daily maintenance calories, BMR and a gentle weight-loss target using age, sex, weight, height and activity level.
Open tool CalculatorCurrency Converter
Convert USD, EUR, GBP, PKR and more with dated Frankfurter reference rates. See the rate date, retry failures and avoid stale or fallback conversions.
Open tool CalculatorPaycheck Calculator
Estimate gross pay, taxes and take-home pay per paycheck from annual salary, pay frequency, tax rate and deductions.
Open tool CalculatorMargin Calculator
Calculate gross profit, margin and markup from sale price and cost. Handles losses and zero denominators clearly, with display currencies including USD and PKR.
Open tool CalculatorPercentage Calculator
Calculate a percentage of a number, one value as a percent of another, or percentage increase and decrease with validated denominators and clear formulas.
Open tool CalculatorSalary to Hourly Calculator
Estimate hourly gross pay from annual earnings, hours and working weeks. Compare working-week earnings with calendar averages and choose a display currency.
Open tool CalculatorAge Calculator
Calculate your exact age in years, months and days from your date of birth. See total days lived and the countdown to your next birthday.
Open tool CalculatorBMI Calculator
Calculate adult BMI from height and weight in metric or imperial units. See the standard BMI category and a healthy-weight reference range.
Open tool CalculatorGrade Calculator
Calculate a points-based test grade, example letter grade and additional points to a target. Supports decimal points and extra credit with input validation.
Open tool CalculatorLoan Calculator
Calculate fixed monthly loan payments, total repayment and interest from your loan amount, annual interest rate and term. Supports zero-interest loans.
Open tool CalculatorCompound Interest Calculator
Project compound interest with monthly deposits, beginning- or end-of-month timing, and a chosen annual rate. See contributions and estimated growth or loss.
Open tool CalculatorTip Calculator
Calculate a restaurant tip, total bill and amount per person. Choose any tip percentage and split the payment instantly.
Open tool CalculatorDate Difference Calculator
Count elapsed days, calendar days and exact Monday–Friday weekdays between two dates. Includes both dates in the weekday count; excludes holiday adjustments.
Open tool CalculatorUnit Converter
Convert length, weight and US liquid volume with up to 12 significant digits. Calculate miles to kilometers, pounds to kilograms and US gallons to liters.
Open tool CalculatorTime Zone Converter
Convert times between Pakistan, New York, London, Dubai and other cities. Accounts for daylight saving and flags skipped or repeated hours.
Open toolOnline Generators
Create useful digital outputs quickly, including QR codes, strong passwords, invoices, color palettes, and random-number lists.
QR Code Generator
Create a free static QR code for a URL or text. Customize the color and download a high-quality PNG instantly. No signup and no expiring links.
Open tool GeneratorPassword Generator
Generate a strong random password with letters, numbers and symbols. Choose 8 to 64 characters, then copy it securely. Free and private.
Open tool GeneratorInvoice Generator
Create a professional itemized invoice online. Add your business, client, services, quantities and rates, then print or save it as PDF.
Open tool GeneratorColor Palette Generator
Generate balanced five-color palettes online. Lock colors you want to keep, create new combinations, and copy HEX codes with one click.
Open tool GeneratorRandom Number Generator
Generate 1–100 random integers within safe whole-number bounds. Pick unique numbers without duplicates and copy the results instantly.
Open toolOnline Image Tools
Compress, convert, and caption images directly in your browser while keeping the workflow simple and private.
Image Compressor
Compress JPG, PNG and WebP images online for free. Reduce image file size in your browser and download the result without uploading files.
Open tool ImageImage Resizer
Resize JPG, PNG and WebP images to exact pixel dimensions online. Lock the aspect ratio, choose a format and download privately without uploading.
Open tool ImageMeme Generator
Make a meme online by adding top and bottom text to your image. Preview and download a clean PNG for free with no signup.
Open tool ImageImage Converter
Convert JPG, PNG and WebP images online for free. Choose an output format and quality, then download the converted image privately.
Open toolOnline Text Tools
Count, format, and restyle text for writing, social posts, documents, spreadsheets, usernames, and code.
Font Generator
Generate stylish Unicode fonts for Instagram, TikTok, Discord and social bios. Type your text, choose a style, and copy it free online.
Open tool TextWord Counter
Count words, characters, characters without spaces and reading time instantly. Paste or type text into this free online word counter.
Open tool TextCase Converter
Convert text to uppercase, lowercase, title case, sentence case, camelCase, snake_case or kebab-case. Copy the result free online.
Open toolDeveloper Tools
Handle common development tasks with focused utilities for JSON, UUID identifiers, and Base64 data.
JSON Formatter
Format, validate and minify JSON without rounding large numbers. Preserve numeric notation, key order and string escapes with browser-local processing.
Open tool DeveloperUUID Generator
Generate one or many secure random UUID v4 identifiers online. Create up to 50 UUIDs and copy them instantly from your browser.
Open tool DeveloperBase64 Encoder and Decoder
Encode plain text to Base64 or decode Base64 into readable UTF-8 text. Free browser-based Base64 converter with instant results.
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