🔥 290 converters · 58 calculators

Convert anything,
calculate everything.

UnitCalConv is a fast, friendly hub for unit conversion and everyday maths. Try the basic or scientific calculator right here, then dive into currency, length, weight, temperature, BMI, GPA, loans and much more.

100% free No sign-up Works offline Mobile ready
⚡ Start converting 🧮 Browse calculators
  • 290 unit converters
  • 58 smart calculators

Unit converters

Pick a unit converter

290 precise converters covering daily life, science, engineering, textiles, baking, aviation and gaming. Choose a tag, enter a value, then press Convert.

Convert Currencies Convert Lengths Convert Weights Convert Temperatures Convert Areas Convert Volumes Convert Speeds Convert Time Units Convert Data Sizes Convert Pressure Convert Energy Convert Power Convert Angles Convert Frequency Convert Force Convert Torque Convert Density Convert Fuel Economy Convert Cooking Measures Convert Electric Current Convert Voltage Convert Resistance Convert Illuminance Convert Shoe Sizes Convert Clothing Sizes Convert CSS Units Convert Time Zones Convert Scale Sizes Convert Textile Units Convert Viscosity Convert Rebar Sizes Encode & Decode Base64 Convert Plato & Brix Convert 3D Filament Convert Land Area Scale Baking Formulas Convert Train Scales Convert Yarn Weights Convert Pet Servings Convert Mouse Sensitivity Convert Gas Mileage Convert Yeast Types Convert Butter Sticks Convert Paper Weight Convert Marla to Sq Ft Convert Bar to MPa Convert Minecraft Blocks Convert Any Weight Convert Tokens to Words Convert Print Units Convert Gas Flow Convert Brix to SG Convert Wire Gauges Convert Nib & Ink Sizes Convert Sound & Light Convert HVAC Units Convert Hat & Ring Sizes Convert Aquarium Volume Convert Bitrate to Size Convert Game Sensitivity Convert Bushels to Pounds Convert Fertilizer Rates Convert Knots to Mach Convert Geological Time Resize Cake Pans Scale Recipe Servings Convert Unix Timestamps Convert Social Ratios Convert Cord to BTU Convert Roof Pitch Convert Hertz to FLOPS Convert PPM to EC Convert Lab Units Convert FFF Units Convert Historical Units Compare Everyday Objects Convert Absurd Units Convert Water Hardness Convert Mesh Sizes Convert Aspect Ratios Convert to Square Feet Convert G-Force to RPM Convert Molarity Convert Molar Mass

Calculators

Smart calculators for real life

58 focused calculators - from scientific maths to loans, GPA, water hardness, concrete, solar panels and screen sizes. Fill in the fields, then press Calculate.

Basic & Scientific MathsFull keypad + trig Calculate AgeExact years, months, days Calculate BMIMetric & imperial Calculate GPA4.0 weighted scale Calculate CGPASemester weighted Project Savings GrowthGrowth & returns Calculate Loan PaymentMonthly instalment Plan Extra PaymentsWith extra payments Solve MatricesDeterminant, inverse & RREF Compare Interest TypesSimple vs compound Calculate CaloriesBMR & daily needs Find Ideal Weight4 proven formulas Solve Percentages4 handy modes Add & Subtract DatesDifference & add days Split IPv4 SubnetsIPv4 CIDR tools Scale Miniature SizesScale & size matching Calculate Screen PPIPixel density Mix Fragrance RatiosDilution & notes Calculate Audio BitrateAudio size & quality Compare Tire SizesFitment & dimensions Calculate Brew RatioCoffee to water Calculate HydrationFlour, water & starter Dose Pool ChemicalsDosing & water balance Calculate Concrete MixBags, sand & aggregate Cost Lumber OrdersBoard feet & spans Calculate CNC Feed RateFeed, speed & chipload Compare Freight WeightsChargeable weight Calculate Baker's %Hydration & formula Calculate Solar OutputArea, watts & kWh Calculate Soap LyeNaOH & KOH dosing Estimate VRAM NeedsFramebuffer & textures Estimate Potting MixLitres, quarts & bags Find TV DimensionsWidth, height & PPI Calculate with UnitsAdd, multiply & divide units Estimate Hobby MaterialsFilament, resin, paint & flock Calculate Candle WaxWax, fragrance & cost Calculate Hive ProfitHive revenue & break-even Calculate Coffee RatioCoffee, water or ratio Calculate CPM CostCPM, CTR & CPC Calculate Mulch YardageCubic yards, feet & bags Calculate Carbon OffsetEmissions, offset & trees Calculate IV Drip RateDrops per minute Calculate Seed Ratelb/acre, kg/ha & seeds Calculate Pet Calorieskcal per cup & portion

Most searched

One page per query: the answer at the top, the formula underneath, a chart of the values people actually ask for, and worked examples.

kg to lbs lbs to kg cm to inches inches to cm cm to feet Celsius to Fahrenheit Fahrenheit to Celsius km/h to mph mph to km/h km to miles GB to MB TB to GB KB to MB USD to BDT USD to INR kW to hp hp to kW joules to calories GSM to oz Bigha to sq ft Katha to sq ft Decimal to sq ft Cent to sq ft Kanal to sq ft Guntha to sq ft Acre to sq ft Gaj to sq ft Acres to hectares Hectares to acres Sq ft to sq m Sq m to sq ft CGPA to percentage VTU CGPA to percentage Anna University CGPA AKTU CGPA to percentage Mumbai University CGPA

Also popular

Currency corridors, kitchen measures and job-site maths

The searches that generic converters answer badly: regional money corridors, ingredient weights, wire gauge and building quantities.

USD to PKR GBP to BDT AED to INR GBP to INR USD to NPR Lakh to million Crore to million Billion to crore Height converter Tablespoons to cups mL to cups Cups to grams Cake pan converter Yeast converter Bricks per m² Tile calculator Paint coverage Concrete coverage AWG to mm² BTU to tons How long 1GB lasts Mbps to MB/s Sensitivity converter Days until

Guides

The reasoning behind the numbers

Nine longer reads on where conversion factors come from, which conventions vary by country, and how to avoid the mistakes that actually cost money.

Metric vs ImperialExact definitions and the factors worth memorising Cooking MeasurementsCup sizes, flour weights and oven temperatures Loans & Compound InterestAmortisation, APR and the value of an extra payment Resolution & PPIPixel density, viewing distance and print sizes Baker's PercentagesHydration, scaling and preferments explained Ten Unit MistakesFamous failures and the checks that prevent them Wire Gauge SystemsAWG, SWG and mm² without the mix-ups Coffee Brew RatiosGrams, water, yield and taste Solar Panel OutputWatts, sun hours and real kWh

Browse all guides

Questions

Frequently asked questions

Everything you might want to know before you start converting.

Yes. Every converter and calculator on UnitCalConv is completely free, works in your browser and never asks for an account.
Results are calculated only when you press Convert or Calculate, so you can change units and values without the screen jumping around. Nothing is computed until you ask for it.
The Currency Converter pulls free daily reference rates from a public exchange-rate API. They are indicative mid-market values, not transactional rates — always confirm with your bank before making a transfer.
Unit conversions use exact internationally defined factors and results are shown to 8 significant digits. Calculators such as BMI, loan and GPA follow standard published formulas.
No installation is required. The site is fully responsive and works on phones, tablets, laptops and desktops in any modern browser.
No. All mathematics runs locally in your browser. Nothing you type is uploaded, stored or shared with third parties.
Yes — every physical unit converter and calculator works offline. Only the currency converter needs an internet connection to fetch current exchange rates.
Use the Payment Calculator for a fixed monthly instalment, the Loan Calculator if you plan extra monthly payments, and the Interest Calculator to compare simple versus compound interest.