Skip to main content
1,017+ calculators · 12,522+ conversions

Every calculator.
Every conversion.
One source of truth.

A free, no-signup reference for engineers, students and finance professionals — 1,017+ calculators and 12,522+ unit conversions across 49 categories, from beam deflection to compound interest.

Browse all 49 categories
// index statuslive
Calculators
0+
Conversions
0+
Categories
0
Disciplines
0
0+Calculators
0+Conversions
0Categories
0Disciplines

// 49 converters · 5 disciplines

Converter library

// why megacalc

0+

Computed in your browser

Every conversion runs client-side with full floating-point precision and verified factors — no servers, no round-trips, instant results.

No signup, no ads before results

Free and open. Answers first — never a wall between you and the number.

Real formulas + worked examples

Each tool shows the equation, the method, and a cited worked example — not just an output box.

Engineering-grade precision

Steam tables, Mohr's circle, beam deflection — reference-quality math, not approximations.

Unit references

542+ unit pages with conversion tables

Kilometer (km)Meter (m)Centimeter (cm)Millimeter (mm)Mile (mi)Yard (yd)Foot (ft)Inch (in)Nautical Mile (nmi)Kilogram (kg)Gram (g)Milligram (mg)Pound (lb)Ounce (oz)Metric Ton (t)Stone (st)Celsius (°C)Fahrenheit (°F)Kelvin (K)Rankine (°R)Meter per Second (m/s)Kilometer per Hour (km/h)Mile per Hour (mph)Knot (kn)Mach (Ma)Liter (L)Milliliter (mL)Gallon (US) (gal)Fluid Ounce (fl oz)Cup (cup)
Show 512 more units ↓
Tablespoon (tbsp)Teaspoon (tsp)Pint (pt)Quart (qt)Square Meter (m²)Square Foot (ft²)Square Kilometer (km²)Square Mile (mi²)Acre (ac)Hectare (ha)Second (s)Millisecond (ms)Minute (min)Hour (h)Day (d)Week (wk)Month (mo)Year (yr)Pascal (Pa)Kilopascal (kPa)Bar (bar)Atmosphere (atm)Pound per Square Inch (psi)Millimeters of Mercury (mmHg)Megapascal (MPa)Gigapascal (GPa)Kilopound per Square Inch (ksi)Torr (torr)Inch of Mercury (inHg)Kilogram-force per Square Centimeter (kgf/cm²)Joule (J)Kilojoule (kJ)Calorie (cal)Kilocalorie (kcal)Kilowatt Hour (kWh)British Thermal Unit (BTU)Electronvolt (eV)Watt (W)Kilowatt (kW)Horsepower (hp)BTU per Hour (BTU/hr)Hertz (Hz)Kilohertz (kHz)Megahertz (MHz)Gigahertz (GHz)Kilometers per Liter (km/L)Miles per Gallon (mpg)Liters per 100km (L/100km)Degree (°)Radian (rad)Gradian (grad)Arcminute (′)Arcsecond (″)Newton (N)Kilonewton (kN)Meganewton (MN)Pound-force (lbf)Kilogram-force (kgf)Dyne (dyn)Kip (kip)Ounce-force (ozf)Newton-meter (N·m)Kilonewton-meter (kN·m)Foot-pound-force (ft·lbf)Inch-pound-force (in·lbf)Kilogram-force-meter (kgf·m)Kilogram-force-centimeter (kgf·cm)Ounce-force-inch (oz·in)Meter per second squared (m/s²)Foot per second squared (ft/s²)Standard Gravity (g)Centimeter per second squared (cm/s²)Inch per second squared (in/s²)Meter to the fourth (m⁴)Centimeter to the fourth (cm⁴)Millimeter to the fourth (mm⁴)Inch to the fourth (in⁴)Foot to the fourth (ft⁴)Kilogram-meter squared (kg·m²)Kilogram-centimeter squared (kg·cm²)Pound-foot squared (lb·ft²)Pound-inch squared (lb·in²)Gram-centimeter squared (g·cm²)Slug-foot squared (slug·ft²)Radian per second (rad/s)Revolutions per minute (RPM)Degree per second (deg/s)Revolution per second (rev/s)Hertz (rotational) (Hz)Radian per second squared (rad/s²)Degree per second squared (deg/s²)RPM per second (RPM/s)Revolution per second squared (rev/s²)Kilogram per cubic meter (kg/m³)Gram per cubic centimeter (g/cm³)Gram per milliliter (g/mL)Pound per cubic foot (lb/ft³)Pound per cubic inch (lb/in³)Pound per gallon (lb/gal)Kilogram per liter (kg/L)Slug per cubic foot (slug/ft³)Pascal-second (Pa·s)Millipascal-second (mPa·s)Centipoise (cP)Poise (P)Pound per foot-second (lb/(ft·s))Pound per foot-hour (lb/(ft·hr))Square meter per second (m²/s)Square millimeter per second (mm²/s)Centistoke (cSt)Stoke (St)Square foot per second (ft²/s)Square inch per second (in²/s)Cubic meter per second (m³/s)Cubic meter per hour (m³/hr)Liter per second (L/s)Liter per minute (L/min)Gallon per minute (GPM)Cubic foot per minute (CFM)Cubic foot per second (ft³/s)Milliliter per second (mL/s)Gallon per hour (GPH)Kilogram per second (kg/s)Kilogram per hour (kg/hr)Gram per second (g/s)Pound per second (lb/s)Pound per hour (lb/hr)Pound per minute (lb/min)Metric ton per hour (t/hr)Newton per meter (N/m)Millinewton per meter (mN/m)Dyne per centimeter (dyn/cm)Pound-force per foot (lbf/ft)Pound-force per inch (lbf/in)Joule per Kilogram-Kelvin (J/(kg·K))Kilojoule per Kilogram-Kelvin (kJ/(kg·K))Calorie per Gram-Celsius (cal/(g·°C))BTU per Pound-Fahrenheit (BTU/(lb·°F))Kilocalorie per Kilogram-Celsius (kcal/(kg·°C))Watt per Meter-Kelvin (W/(m·K))Watt per Centimeter-Kelvin (W/(cm·K))BTU per Hour-Foot-Fahrenheit (BTU/(hr·ft·°F))Calorie per Second-Centimeter-Celsius (cal/(s·cm·°C))BTU·inch per Hour-Square Foot-Fahrenheit (BTU·in/(hr·ft²·°F))Watt per Square Meter (W/m²)Kilowatt per Square Meter (kW/m²)BTU per Hour-Square Foot (BTU/(hr·ft²))Calorie per Second-Square Centimeter (cal/(s·cm²))Watt per Square Centimeter (W/cm²)Watt per Square Meter-Kelvin (W/(m²·K))Kilowatt per Square Meter-Kelvin (kW/(m²·K))BTU per Hour-Square Foot-Fahrenheit (BTU/(hr·ft²·°F))Calorie per Second-Square Centimeter-Celsius (cal/(s·cm²·°C))Kilocalorie per Hour-Square Meter-Celsius (kcal/(hr·m²·°C))Joule per Kelvin (J/K)Kilojoule per Kelvin (kJ/K)Calorie per Kelvin (cal/K)BTU per Rankine (BTU/°R)Joule per Kilogram-Kelvin (J/(kg·K))Kilojoule per Kilogram-Kelvin (kJ/(kg·K))BTU per Pound-Rankine (BTU/(lb·°R))Calorie per Gram-Celsius (cal/(g·°C))Joule per Kilogram (J/kg)Kilojoule per Kilogram (kJ/kg)BTU per Pound (BTU/lb)Calorie per Gram (cal/g)Foot-Pound per Pound (ft·lbf/lb)Unitless Strain (ε)Percent Strain (%)Microstrain (με)Millimeter per Millimeter (mm/mm)Inch per Inch (in/in)Newton per Meter (N/m)Newton per Millimeter (N/mm)Kilonewton per Meter (kN/m)Pound-force per Inch (lbf/in)Kilogram-force per Millimeter (kgf/mm)Kilogram per Meter (kg/m)Gram per Meter (g/m)Pound per Foot (lb/ft)Pound per Inch (lb/in)Tex (tex)Denier (den)Micrometer (Ra) (μm)Microinch (Ra) (μin)Nanometer (nm)Millimeter (mm)Meter per Minute (m/min)Meter per Second (m/s)Foot per Minute (ft/min)Foot per Second (ft/s)cups All-Purpose Flour (cups)grams All-Purpose Flour (grams)ounces All-Purpose Flour (ounces)tablespoons All-Purpose Flour (tablespoons)teaspoons All-Purpose Flour (teaspoons)cups Bread Flour (cups)grams Bread Flour (grams)ounces Bread Flour (ounces)tablespoons Bread Flour (tablespoons)teaspoons Bread Flour (teaspoons)cups Cake Flour (cups)grams Cake Flour (grams)ounces Cake Flour (ounces)tablespoons Cake Flour (tablespoons)teaspoons Cake Flour (teaspoons)cups Whole Wheat Flour (cups)grams Whole Wheat Flour (grams)ounces Whole Wheat Flour (ounces)tablespoons Whole Wheat Flour (tablespoons)teaspoons Whole Wheat Flour (teaspoons)cups Granulated Sugar (cups)grams Granulated Sugar (grams)ounces Granulated Sugar (ounces)tablespoons Granulated Sugar (tablespoons)teaspoons Granulated Sugar (teaspoons)cups Brown Sugar (cups)grams Brown Sugar (grams)ounces Brown Sugar (ounces)tablespoons Brown Sugar (tablespoons)teaspoons Brown Sugar (teaspoons)cups Powdered Sugar (cups)grams Powdered Sugar (grams)ounces Powdered Sugar (ounces)tablespoons Powdered Sugar (tablespoons)teaspoons Powdered Sugar (teaspoons)cups Raw Sugar (cups)grams Raw Sugar (grams)ounces Raw Sugar (ounces)tablespoons Raw Sugar (tablespoons)teaspoons Raw Sugar (teaspoons)cups Butter (cups)grams Butter (grams)ounces Butter (ounces)tablespoons Butter (tablespoons)teaspoons Butter (teaspoons)cups Water (cups)grams Water (grams)ounces Water (ounces)tablespoons Water (tablespoons)teaspoons Water (teaspoons)cups Milk (cups)grams Milk (grams)ounces Milk (ounces)tablespoons Milk (tablespoons)teaspoons Milk (teaspoons)cups Heavy Cream (cups)grams Heavy Cream (grams)ounces Heavy Cream (ounces)tablespoons Heavy Cream (tablespoons)teaspoons Heavy Cream (teaspoons)cups Buttermilk (cups)grams Buttermilk (grams)ounces Buttermilk (ounces)tablespoons Buttermilk (tablespoons)teaspoons Buttermilk (teaspoons)cups Honey (cups)grams Honey (grams)ounces Honey (ounces)tablespoons Honey (tablespoons)teaspoons Honey (teaspoons)cups Olive Oil (cups)grams Olive Oil (grams)ounces Olive Oil (ounces)tablespoons Olive Oil (tablespoons)teaspoons Olive Oil (teaspoons)cups Vegetable Oil (cups)grams Vegetable Oil (grams)ounces Vegetable Oil (ounces)tablespoons Vegetable Oil (tablespoons)teaspoons Vegetable Oil (teaspoons)cups Coconut Oil (cups)grams Coconut Oil (grams)ounces Coconut Oil (ounces)tablespoons Coconut Oil (tablespoons)teaspoons Coconut Oil (teaspoons)cups Sesame Oil (cups)grams Sesame Oil (grams)ounces Sesame Oil (ounces)tablespoons Sesame Oil (tablespoons)teaspoons Sesame Oil (teaspoons)cups Cocoa Powder (cups)grams Cocoa Powder (grams)ounces Cocoa Powder (ounces)tablespoons Cocoa Powder (tablespoons)teaspoons Cocoa Powder (teaspoons)cups Salt (cups)grams Salt (grams)ounces Salt (ounces)tablespoons Salt (tablespoons)teaspoons Salt (teaspoons)cups Baking Powder (cups)grams Baking Powder (grams)ounces Baking Powder (ounces)tablespoons Baking Powder (tablespoons)teaspoons Baking Powder (teaspoons)cups Baking Soda (cups)grams Baking Soda (grams)ounces Baking Soda (ounces)tablespoons Baking Soda (tablespoons)teaspoons Baking Soda (teaspoons)cups Oats (cups)grams Oats (grams)ounces Oats (ounces)tablespoons Oats (tablespoons)teaspoons Oats (teaspoons)cups Rolled Oats (cups)grams Rolled Oats (grams)ounces Rolled Oats (ounces)tablespoons Rolled Oats (tablespoons)teaspoons Rolled Oats (teaspoons)cups Rice (cups)grams Rice (grams)ounces Rice (ounces)tablespoons Rice (tablespoons)teaspoons Rice (teaspoons)cups Cornstarch (cups)grams Cornstarch (grams)ounces Cornstarch (ounces)tablespoons Cornstarch (tablespoons)teaspoons Cornstarch (teaspoons)cups Cream Cheese (cups)grams Cream Cheese (grams)ounces Cream Cheese (ounces)tablespoons Cream Cheese (tablespoons)teaspoons Cream Cheese (teaspoons)cups Sour Cream (cups)grams Sour Cream (grams)ounces Sour Cream (ounces)tablespoons Sour Cream (tablespoons)teaspoons Sour Cream (teaspoons)cups Maple Syrup (cups)grams Maple Syrup (grams)ounces Maple Syrup (ounces)tablespoons Maple Syrup (tablespoons)teaspoons Maple Syrup (teaspoons)cups Molasses (cups)grams Molasses (grams)ounces Molasses (ounces)tablespoons Molasses (tablespoons)teaspoons Molasses (teaspoons)cups Corn Syrup (cups)grams Corn Syrup (grams)ounces Corn Syrup (ounces)tablespoons Corn Syrup (tablespoons)teaspoons Corn Syrup (teaspoons)cups Vinegar (cups)grams Vinegar (grams)ounces Vinegar (ounces)tablespoons Vinegar (tablespoons)teaspoons Vinegar (teaspoons)cups Lemon Juice (cups)grams Lemon Juice (grams)ounces Lemon Juice (ounces)tablespoons Lemon Juice (tablespoons)teaspoons Lemon Juice (teaspoons)cups Yogurt (cups)grams Yogurt (grams)ounces Yogurt (ounces)tablespoons Yogurt (tablespoons)teaspoons Yogurt (teaspoons)cups Peanut Butter (cups)grams Peanut Butter (grams)ounces Peanut Butter (ounces)tablespoons Peanut Butter (tablespoons)teaspoons Peanut Butter (teaspoons)cups Almond Butter (cups)grams Almond Butter (grams)ounces Almond Butter (ounces)tablespoons Almond Butter (tablespoons)teaspoons Almond Butter (teaspoons)cups Applesauce (cups)grams Applesauce (grams)ounces Applesauce (ounces)tablespoons Applesauce (tablespoons)teaspoons Applesauce (teaspoons)cups Tomato Paste (cups)grams Tomato Paste (grams)ounces Tomato Paste (ounces)tablespoons Tomato Paste (tablespoons)teaspoons Tomato Paste (teaspoons)cups Tahini (cups)grams Tahini (grams)ounces Tahini (ounces)tablespoons Tahini (tablespoons)teaspoons Tahini (teaspoons)cups Agave Nectar (cups)grams Agave Nectar (grams)ounces Agave Nectar (ounces)tablespoons Agave Nectar (tablespoons)teaspoons Agave Nectar (teaspoons)US Dollar ($)Euro (€)British Pound (£)Japanese Yen (¥)Australian Dollar (A$)Canadian Dollar (C$)Swiss Franc (Fr)Chinese Yuan (¥)Indian Rupee (₹)South Korean Won (₩)Swedish Krona (kr)Norwegian Krone (kr)Danish Krone (kr)New Zealand Dollar (NZ$)Singapore Dollar (S$)Hong Kong Dollar (HK$)Taiwan Dollar (NT$)Thai Baht (฿)Malaysian Ringgit (RM)Philippine Peso (₱)Indonesian Rupiah (Rp)Vietnamese Dong (₫)Brazilian Real (R$)Mexican Peso ($)Argentine Peso ($)Chilean Peso ($)Colombian Peso ($)South African Rand (R)Nigerian Naira (₦)Egyptian Pound (£)Kenyan Shilling (KSh)Ghanaian Cedi (₵)Tanzanian Shilling (TSh)Moroccan Dirham (د.م.)UAE Dirham (د.إ)Saudi Riyal (﷼)Qatari Riyal (﷼)Kuwaiti Dinar (د.ك)Bahraini Dinar (.د.ب)Omani Rial (﷼)Jordanian Dinar (د.ا)Israeli Shekel (₪)Turkish Lira (₺)Polish Zloty (zł)Czech Koruna (Kč)Hungarian Forint (Ft)Romanian Leu (lei)Bulgarian Lev (лв)Croatian Kuna (kn)Serbian Dinar (din)Ukrainian Hryvnia (₴)Russian Ruble (₽)Kazakhstani Tenge (₸)Georgian Lari (₾)Armenian Dram (֏)Bangladeshi Taka (৳)Pakistani Rupee (₨)Sri Lankan Rupee (₨)Icelandic Krona (kr)Albanian Lek (L)Macedonian Denar (ден)Bosnian Mark (KM)Moldovan Leu (L)Belarusian Ruble (Br)Azerbaijani Manat (₼)Uzbekistani Som (сум)Tajikistani Somoni (SM)Kyrgyzstani Som (лв)Mongolian Tugrik (₮)Nepalese Rupee (₨)Myanmar Kyat (K)Cambodian Riel (៛)Lao Kip (₭)Dominican Peso (RD$)Guatemalan Quetzal (Q)Honduran Lempira (L)Nicaraguan Cordoba (C$)Costa Rican Colon (₡)Panamanian Balboa (B/.)Paraguayan Guarani (₲)Uruguayan Peso ($U)Bolivian Boliviano (Bs.)Jamaican Dollar (J$)Trinidad Dollar (TT$)Barbadian Dollar (Bds$)Bahamian Dollar (B$)Haitian Gourde (G)Bitcoin (BTC)US Dollar ($)Euro (€)British Pound (£)Japanese Yen (¥)Canadian Dollar (C$)Australian Dollar (A$)Swiss Franc (Fr)Chinese Yuan (¥)Indian Rupee (₹)South Korean Won (₩)Ethereum (ETH)Solana (SOL)BNB (BNB)XRP (XRP)Cardano (ADA)Dogecoin (DOGE)Polkadot (DOT)Avalanche (AVAX)Chainlink (LINK)Polygon (MATIC)Uniswap (UNI)Litecoin (LTC)Cosmos (ATOM)NEAR Protocol (NEAR)Stellar (XLM)Algorand (ALGO)Filecoin (FIL)Hedera (HBAR)TRON (TRX)Shiba Inu (SHIB)Arbitrum (ARB)Optimism (OP)Aptos (APT)