Unit & Currency Converter

Quick conversion between area, length, weight, temperature, and currency values.

1 cm = 0.01 m

1 g = 0.001 kg

1 sq cm = 0.0001 sq m

0 °C = 32 °F

100 INR = 1.20 USD

Rate: 1 INR = 0.012 USD (approximate)

How This Tool Works

Operation: The Unit Converter supports conversion across multiple measurement categories using predefined conversion factors relative to a base SI unit within each category. The tool uses a two-step conversion: Input Unit → Base Unit → Output Unit.

Categories and base units:

Length: metre (m) — conversions from/to: km, mile, yard, foot, inch, cm, mm, micrometre, nanometre.
Mass/Weight: kilogram (kg) — conversions from/to: tonne, pound, ounce, gram, mg, microgram.
Volume: litre (L) — conversions from/to: millilitre, gallon (US/UK), quart, pint, cup, fluid ounce, cubic metre, cubic foot.
Temperature: Uses direct formulas: °C = (°F − 32) × 5/9, °F = °C × 9/5 + 32, K = °C + 273.15.
Area: square metre (m²) — conversions from/to: km², hectare, acre, ft², in², cm², mm².
Speed: metre/second (m/s) — conversions from/to: km/h, mph, knot, ft/s.
Time: second (s) — conversions from/to: minute, hour, day, week, month, year.
Digital Storage: byte (B) — conversions from/to: KB, MB, GB, TB, PB (binary: 1 KB = 1024 bytes).
Energy: joule (J) — conversions from/to: calorie, kWh, BTU, eV.

All conversion factors are hardcoded as JavaScript constants for instant, offline-capable computation.

Key Benefits of Using the Unit Converter

Completely offline operation: All conversion factors are built into the HTML/JS. No internet connection required after the first page load. This makes the converter usable in remote areas, on flights, or in environments with restricted connectivity.
9 measurement categories in one interface: Length, mass, volume, temperature, area, speed, time, data storage, and energy — switch between categories without reloading. Each category has its own set of commonly used units pre-configured.
Instant bidirectional results: Enter a value in any unit, and all other units in that category update simultaneously. No need to click 'Convert' — results appear as you type, making comparisons effortless.

Practical Real-World Use Cases

Students solving physics problems: A student converting 5 kilometres to metres, 2 hours to seconds, or 30°C to Fahrenheit for homework can check their manual calculations instantly without an internet search.
International travellers understanding local measurements: A traveller from the US visiting Europe can convert miles to kilometres for driving distances, Fahrenheit to Celsius for weather forecasts, and pounds to kilograms for luggage weight limits — all in one place.
DIY home renovators converting materials: A homeowner measuring a room in feet but buying flooring sold in square metres can convert between imperial and metric units to calculate exactly how much material to purchase.

Frequently Asked Questions (FAQ)

Are these US or UK gallons?

Both. The volume category includes separate entries for US gallon (3.785 L) and UK/Imperial gallon (4.546 L). Select the correct one based on your geography.

Is data storage measured in decimal (1000) or binary (1024)?

The tool uses binary prefixes (1 KB = 1024 bytes), which is the standard for operating systems and RAM. For hard drive advertisements (which use decimal with 1 KB = 1000 bytes), the displayed values will differ slightly.

Can I convert between unrelated categories (e.g., length to time)?

No — the tool only converts between compatible units within the same measurement category. Converting between different physical dimensions requires additional data (e.g., speed = distance/time) handled by separate calculators.