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From daily science to digital, finance, and cooking — ConvertToUnit instantly converts units across 7 categories, anywhere.

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What would you like to convert?

Jump straight into any of the 7 categories.

Daily · Science
Length · Weight · Temperature · Speed

Daily · Science

From meters to miles, Celsius to Fahrenheit — instant conversion of everyday and scientific units.

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Digital · Dev
Data · Speed · Resolution

Digital · Dev

Bytes to gigabytes, bps to Gbps — digital unit conversion for developers and IT users.

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Cooking · Baking
Cups · Spoons · Grams · Temp

Cooking · Baking

Cups to grams, oven Fahrenheit to Celsius — precise measurements that won't ruin your recipe.

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Business · Finance
Currency · Unit price · Percent

Business · Finance

Currency, unit pricing, and percentage calculations — financial tools for business decisions.

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Math · Bases
Binary · Decimal · Hex · Angles

Math · Bases

Binary to hexadecimal, radians to degrees — base and angle conversion for math and CS.

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Energy · Engineering
Pressure · Energy · Power · Torque

Energy · Engineering

Pascal to bar, joules to calories — precision engineering unit conversion.

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Lifestyle
Shoes · Clothing · Area · Age

Lifestyle

Shoe and clothing sizes, pyeong to m², international age — everyday essentials.

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Timestamp

Unix Timestamp Converter

Convert 10-digit (seconds) or 13-digit (milliseconds) Unix timestamps to UTC and your local browser time — or reverse-convert datetime to epoch.

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Customs Duty

Customs Duty Calculator

Estimate import duty from item value and shipping. Enter duty rates manually from your destination country’s rules — we do not maintain a live tariff database.

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Adriantiba

Adriantiba

5-Color Multi Blender

Blend up to 5 colors with weighted ratios. Sliders always total 100% — instant HEX, RGB, CMYK.

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Complete Unit Conversion Guides

In-depth reference articles for every category — formulas, standards, and practical tips for instant conversion.

Daily · Science
Length · Weight · Temperature · Speed

Daily · Science

From meters to miles and Celsius to Fahrenheit — a practical guide to everyday and scientific units, their history, and instant conversion. The International System of Units (SI) unified length, mass, and time standards from the 1960s onward, while US customary units (inch, foot, mile, pound, Fahrenheit) remain common in daily life and industry. ConvertToUnit's Daily · Science converter simultaneously updates cm, m, km, inch, foot, yard, mile, g, kg, lb, oz, m², L, ml, gal from a single input. Use it for travel distance, overseas shopping sizes, lab reports, and weather or body temperature interpretation without memorizing every factor.

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Digital · Dev
Data · Speed · Resolution

Digital · Dev

From bytes to gigabytes and bps to Gbps — an explainer on digital storage and transfer standards for developers and IT users. Memory capacity mixes IEC (1024-based KiB, MiB, GiB) and SI (1000-based KB, MB, GB) labels, causing frequent misunderstandings. Network speed requires distinguishing bits per second (bps) from bytes per second (B/s) via 1 Byte = 8 bits. ConvertToUnit Digital · Dev tools cover SI/IEC storage, Mbps, MB/s, Gbps throughput, and resolution, DPI, and PPI conversion for cloud billing, NAS planning, streaming bandwidth design, and frontend rem·px layout work.

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Cooking · Baking
Cups · Spoons · Grams · Temp

Cooking · Baking

Cups to grams and Fahrenheit oven temps — precise volume and weight guidelines so international recipes do not fail. US recipes use cup, tablespoon, teaspoon, ounce, and pound; European and Asian recipes use g, ml, and °C — copying numbers directly often fails. Baking especially needs accurate flour, sugar, and butter volume-to-weight conversion for correct dough consistency. Common oven pairs include 350°F ≈ 177°C and 400°F ≈ 204°C. ConvertToUnit Culinary · Baking handles cup·spoon·gram·ounce conversion, oven temperature conversion, and baker's percentage water adjustment in one place.

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Business · Finance
Currency · Unit price · Percent

Business · Finance

Global exchange rates, pricing, and percentage formulas for business decisions. Import/export quotes, cross-border shopping, and multi-currency settlement need USD, EUR, KRW, JPY, CNY cross rates near real time. Margin is (price−cost)÷price×100; markup is (price−cost)÷cost×100 — definitions differ. Discount, growth, and target achievement rates are daily tasks for small sellers and e-commerce. ConvertToUnit Finance offers open.er-api.com rates, triangular FX comparison, margin and cost reverse calculation, and comprehensive percent tools.

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Math · Bases
Binary · Decimal · Hex · Angles

Math · Bases

Binary to hexadecimal and radians to degrees — fundamentals of bases and angles in computer science and mathematics. BIN, OCT, DEC, and HEX are essential in programming, networking, embedded systems, and debugging; one hex digit represents four bits. Angles convert via 180° = π rad and 200 grad = π rad; radians are standard in trigonometry, vectors, and robotics. Decimal–fraction conversion with GCD yields clean fractions like 0.375 = 3/8. ConvertToUnit Math · Bases provides multi-grid base conversion, 8-decimal angle conversion, and GCD-based fraction·decimal sync.

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Energy · Engineering
Pressure · Energy · Power · Torque

Energy · Engineering

Pascal to bar and joules to calories — precision engineering, power, and torque reference data for engineers and technicians. Pressure: 1 bar ≈ 100 kPa ≈ 14.5038 psi — common in tires, piping, and hydraulics. Energy: 1 kWh = 3.6 MJ; 1 cal ≈ 4.184 J. Power: 1 hp ≈ 745.7 W. Torque N·m versus lb·ft is critical in automotive and machinery manuals. ConvertToUnit Engineering converts Pa·kPa·bar·psi·atm, J·kJ·kcal·kWh, W·kW·hp, and N·m·kgf·m·lb·ft in real time for field and design documentation.

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Lifestyle
Shoes · Clothing · Area · Age

Lifestyle

Global shoe and clothing size mapping, pyeong versus square meters, and international age — essential everyday conversions. Cross-border shopping needs foot length (mm) to US·EU·UK shoe sizes and Korean apparel sizes to US·European equivalents. Korean apartment pyeong uses 1 pyeong = 3.305785 m²; supply area in m² and customary pyeong labels should be understood together. International age counts from birthday; Korean age (se-nai) follows different social convention. ConvertToUnit Lifestyle offers shoe·clothing charts, pyeong↔m² conversion, and 2026-based age and zodiac calculation.

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📐 Instant Length, Area, and Weight Conversion Tool

Accurate unit conversion is essential for global engineering, design, and math workflows. Our conversion tools run 100% locally on your device to ensure maximum speed, security, and precision with zero external server dependencies.