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Instantly convert length, weight, temperature, currency, and 500+ units. No signup. No ads that break your flow. Just results.
Most-used conversions today
15 categories · 500+ conversions
How-to articles, buying guides, and travelers’ tips
Understand the key differences between metric and imperial measurement systems, which countries use each, and how to convert between them reliably.
Gram-to-cup conversions for 8 baking staples — flour, sugar, butter, cocoa, honey and more — with the chart weights bakers actually use.
Learn simple mental math tricks to convert Celsius to Fahrenheit when traveling. Plus: how to set your thermostat abroad.
Top-rated tape measures that display metric and imperial units. Perfect for international travelers, contractors, and DIYers.
How to choose a digital kitchen scale that measures grams, ounces, kilograms, and pounds accurately.
Everything travelers need to know about converting currency, understanding exchange rates, and avoiding hidden fees on international trips.
Kitchen scales, thermometers, tape measures and more — hand picked for you
A unit converter is an online tool that instantly transforms values from one measurement system to another. ConvertNow is a free, fast, and accurate online unit converter supporting 500+ unit conversions across 15 categories. Whether you need to convert kilometers to miles, kilograms to pounds, or Celsius to Fahrenheit, you get instant results with the exact formula displayed.
Our currency converter uses live exchange rates, while all other converters use precise scientific constants for maximum accuracy. Every tool includes bidirectional conversion, a swap button, and a reference table.
ConvertNow covers every type of unit conversion you need. Click any category below to start converting.
Convert meters, kilometers, miles, inches, feet, yards, and more.
Convert kilograms, pounds, ounces, grams, stones, and more.
Convert Celsius, Fahrenheit, Kelvin, and Rankine instantly.
Live exchange rates for 40 currencies, including USD, EUR, GBP, JPY, and CAD.
Convert liters, gallons, cups, tablespoons, milliliters, and more.
Convert square meters, square feet, acres, hectares, and more.
Convert km/h, mph, knots, meters per second, and more.
Convert seconds, minutes, hours, days, weeks, months, years.
Convert bytes, KB, MB, GB, TB, PB for files and storage.
Convert PSI, bar, pascal, atmospheres, torr, and more.
Convert joules, calories, kilowatt-hours, BTU, and more.
Convert MPG, L/100km, km/L for vehicle efficiency.
Convert horsepower, kilowatts, watts and metric horsepower (PS).
Convert newton meters, foot-pounds and inch-pounds.
Convert cooking measurements: cups, spoons, grams, ounces.
Unlike other converters that bombard you with ads, force signups, or display inaccurate results, ConvertNow is built on a simple promise: free, fast, and accurate conversions with zero friction.
Built by a team passionate about measurement accuracy and user experience, ConvertNow serves students, engineers, travelers, home cooks, fitness enthusiasts, and professionals worldwide.
You do not need to download anything. Simply open ConvertNow.ca in your browser, select your category, and type your value. The result appears instantly — no loading screens, no captchas, no popups.
Our shop also recommends physical measurement tools matched to the conversions you perform most, so you can convert digitally and verify with hardware.
ConvertNow is designed for real-world use across every niche:
Yes. ConvertNow is completely safe to use. We do not collect personal data, require accounts, or store your conversion history. All calculations happen in your browser — no data is sent to our servers.
Our conversion formulas are based on internationally recognized scientific standards (SI units, NIST definitions, ISO standards) and are verified against multiple reference sources. The currency converter updates every 60 minutes using live market data.
Simply select a category (length, weight, temperature, etc.), choose your units, enter a value, and get the result instantly. No signup required.
Yes. All conversions use standard, internationally-recognized formulas and constants for maximum accuracy.
Yes! ConvertNow is a Progressive Web App (PWA). Once loaded, most converters work offline. Install it from your browser for the best experience.
ConvertNow supports 500+ unit conversions across 15 categories including length, weight, temperature, currency, area, volume, speed, time, digital storage, and more.
Yes, currency conversions use real-time exchange rates updated regularly via a live API. A fallback to cached rates is used if the API is unavailable.