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📏 Unit convertersFree
ML to KG converter
Turn a volume in millilitres into kilograms with the density of your substance: 1000 ml of water at 1 kg per litre is 1 kg.
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ML to lbs converter
Turn millilitres into pounds with the density of your liquid: 1000 ml of water at 1 g per ml is about 2.2046 lb.
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📏 Unit convertersFree
ML to µL conversion
Multiply millilitres by exactly 1000 to get microlitres: 1 ml is 1000 µl and a quarter millilitre is 250 µl.
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📏 Unit convertersFree
Millimeters converter
Enter a length in millimetres and get inches, centimetres and metres at once: 25.4 mm is exactly 1 inch, 2.54 cm and 0.0254 m.
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MM to ATM conversion
Turn a water-column height in millimetres into standard atmospheres: 1 mm of water is 0.000096784111 atm, and about 10332 mm make one full atmosphere.
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MM to km converter
Divide millimetres by exactly one million to get kilometres: 1000000 mm is 1 km and 2.5 million mm is 2.5 km.
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MM to m conversion
Divide millimetres by exactly 1000 to get metres: 2500 mm is 2.5 m and 1 mm is 0.001 m. Take a caliper or sheet-metal reading straight into a site plan or room…
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MPa conversion
Enter one megapascal value and get psi, bar and kilopascals together: 1 MPa is 145.037737730209 psi, 10 bar and 1000 kPa.
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MPa to PSI converter
Multiply megapascals by 145.038 to get psi: 1 MPa is 145.038 psi and 250 MPa is 36259.5 psi. Move mill-certificate yield values and SI pump ratings into the psi…
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m/s to km/h converter
Turn a lab or sensor speed into the unit on road signs: 10 m/s is 36 km/h, because a kilometer is 1000 meters and an hour 3600 seconds, so the factor is exactly…
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📏 Unit convertersFree
Ms to seconds conversion
Turn a millisecond count into seconds by dividing by exactly 1000: 2500 milliseconds are 2.5 seconds, ready for a timeout, a profiling report or a latency…
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📏 Unit convertersFree
Newton-meter converter
Start from a torque in newton-meters and get it in the unit your wrench or spec sheet uses: 1 N·m is 0.737562149277 foot-pounds, and nine target units are…
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Nickels to dollars converter
Count the nickels in a jar or a cash drawer and get the dollar amount: 20 nickels make exactly 1 dollar and 7 nickels make 35 cents, because a US nickel is a…
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📏 Unit convertersFree
NM converter
Find the frequency behind a laser, LED or filter wavelength: 500 nm green light is 599.584916 terahertz, worked out by dividing the exact speed of light…
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📏 Unit convertersFree
Nm to in-lbs converter
Set an inch-pound torque wrench from a metric spec: 1 newton-meter is 8.8507 inch-pounds, so a 10 N·m bolt becomes 88.507 in-lb with one multiplication.
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NM to m conversion
Put a length from a spectrometer or a chip drawing into meters: divide by exactly one billion, so 550 nm, a typical green wavelength, becomes 5.5×10⁻⁷ m, the…
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Number to billion converter
Put a raw count on the billion scale with one exact division: 2,500,000,000 becomes 2.5 billion, using the short-scale billion of a thousand million, with no…
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Ounce to kg converter
Put a US net weight onto an export label or postal form: 16 ounces are exactly 0.45359237 kilograms, because the ounce is a fixed sixteenth of the international…
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Ounces to pounds converter
Read a kitchen-scale or parcel-ticket weight in pounds: a 48-ounce bag is exactly 3 pounds and a 16-ounce box is 1 pound, because the avoirdupois pound holds…
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Oz to cc converter
Turn a US fluid-ounce volume into the cc marked on syringes and glassware: 1 fl oz is 29.5735 cc, so a cup of 8 fl oz is 236.588 cc, never a weight ounce or a…
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📏 Unit convertersFree
Pa to PSI converter
Read an SI pressure on a US gauge face: each pascal is 0.000145038 psi, so 1 megapascal comes out as 145.038 psi, and vacuum or differential readings may stay…
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📏 Unit convertersFree
Pascal conversion
Type one pressure in pascals and read it in kilopascals, bar, psi and standard atmospheres at the same time: 101325 Pa is exactly 1 atm, 101.325 kPa and 1.01325…
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Pint to pound converter
One US pint of water weighs about 1.043 pounds, but oil, milk or honey do not: enter the pints and the density of the liquid in g/mL and get its weight in…
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Pints to gallons converter
8 US pints make exactly 1 gallon, so 4 pints are 0.5 gallon and 16 pints are 2 gallons. Turn the pints on a recipe, a dairy sheet or a worksheet into US liquid…
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📏 Unit convertersFree
Pounds and ounces
75 ounces is 4 pounds and 11 ounces, not 4.6875 lb. Enter a total in ounces and get the whole pounds plus the leftover ounces that baby books, shipping labels…
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📏 Unit convertersFree
Pounds to lbs converter
150 pounds is 150 lbs, because pound and lb name the same avoirdupois unit: only the label changes, never the number.
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Pounds to stone converter
140 pounds is exactly 10 stone, because one stone is 14 pounds. Type the pounds from a scale, a fitness app or a weigh-in sheet and get the stone figure British…
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📏 Unit convertersFree
PPM to mg/L converter
For water and dilute water-like samples, 10 ppm is 10 mg/L, because one litre of water weighs one kilogram.
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Pressure unit conversion
1 atm is 14.695948775513 psi and 1 bar is exactly 100 kPa. Convert a reading between any two of Pa, kPa, bar, psi and atm so a datasheet, a gauge and a problem…
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PSI to inches of water conversion
1 psi is 27.7076 inches of water, the conventional factor for a water column near 60 °F printed on many manometer charts.
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Psig to psia converter
100 psig is 114.696 psia: add one conventional atmosphere of 14.696 psi to the gauge reading and you get the absolute pressure that gas-law, boiling-point and…
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Quantity converter
5 feet is 1.524 meters, and asking to turn kilograms into meters gets a refusal instead of a made-up number.
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📏 Unit convertersFree
Quarters to dollars converter
Count your quarters and get the dollar amount straight away: 4 quarters are 1 dollar, 40 quarters are 10 dollars, and the cents and the arithmetic come with…
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Quarts to pounds converter
Enter a volume in US quarts and the liquid's density to get its weight in pounds: 1 quart of water at 1 g/mL weighs about 2.086 pounds, and denser liquids such…
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📏 Unit convertersFree
Radiation converter
Convert radiation readings within the right family: 1 curie is 37 billion becquerels and 1 gray is 100 rad.
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📏 Unit convertersFree
RMS to peak watts converter
Turn an amplifier's RMS rating into the peak figure printed beside it: the converter multiplies by √2, so 50 W RMS is about 70.71 W peak, ready for speaker…
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Roman numerals
Type a whole number from 1 to 3999 and get its standard Roman numeral: 1994 becomes MCMXCIV and 3999 becomes MMMCMXCIX, ready for a title page, an outline or an…
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📏 Unit convertersFree
Scale conversion calculator
Turn a real-world length into its size on a 1:N drawing or model: a 10000 mm wall becomes 200 mm on a 1:50 plan, the same division used for HO trains, die-cast…
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📏 Unit convertersFree
Seconds converter
Enter a duration in seconds and see it in minutes, hours and days at the same time: 90 seconds are 1.5 minutes and 0.025 hours, worked out with exact civil-time…
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Seconds to hours converter
Divide seconds by 3600 and you have hours: 7200 seconds are 2 hours and 1800 seconds are half an hour, with every fraction kept for timers, logs and…
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💰 Finance & moneyFree
Post Office MIS calculator
A deposit of 100,000 at 7.4% a year pays 616.67 every month, sixty payments over the five-year term, and the full 100,000 comes back at maturity.
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💰 Finance & moneyFree
Powerball calculator
With a 400,000,000 jackpot, a ticket costing 2 and 292,201,338 combinations, your odds are 1 in 292,201,338 and the jackpot adds just over 1 per ticket, so the…
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💰 Finance & moneyFree
Pre- and post-money valuation
A 2 million investment into a company valued at 8 million before the round makes it worth 10 million after, so the new investor owns 20% and existing holders…
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Price per sqft calculator
A home sold for 450,000 with 1,800 square feet of interior floor works out to 250 per square foot, a single figure you can line up against nearby sales of any…
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Price per square meter calculator
A property priced at 250,000 with 80 square meters of floor area comes to 3,125 per square meter, so flats of different sizes can be ranked on the same footing.
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Price quantity calculator
A unit price of 12.5 times 4 units gives a line total of 50, and 2.5 metres of fabric at 10 a metre gives 25.
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Price to sales ratio calculator
A market capitalization of 500,000,000 against total revenue of 250,000,000 gives a price-to-sales ratio of 2: the market values the equity at twice its annual…
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Private savings calculator
With national income of 10,000, taxes of 2,000 and consumption of 6,500, disposable income is 8,000 and private savings come to 1,500.
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Profit calculator
Revenue of 125,000 minus costs of 87,500 leaves a profit of 37,500. Enter both totals for the same period and currency and get the signed amount, negative when…
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PVGO calculator
A share quoted at 50 with earnings per share of 4 and a required return of 0.10 has a no-growth value of 40, so 10 of its price is the present value of growth…
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PVIFA calculator
At 10% per period over 5 periods, the ordinary annuity factor is 3.790786769408: a level payment at the end of each period is worth that many payments today.
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Rate of pay calculator
Pay of 800 for 40 hours of work is a rate of 20 per hour. Turn what a shift, a week or a gig actually paid into an hourly figure you can compare with the posted…
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💰 Finance & moneyFree
Real estate commission calculator
A 6% commission on a 400,000 sale is 24,000, the amount that leaves the closing table before anyone talks about splits, taxes or title fees.
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Real estate commission with VAT calculator
A sale of 250,000 at a 3% commission with 21% VAT gives a net commission of 7,500, VAT of 1,575 and a total of 9,075 owed to the agency.
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Receivables turnover calculator
Net credit sales of 365,000 on average receivables of 50,000 give a receivables turnover of 7.3: the credit book was collected 7.3 times in the period.
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Remote vs on-location workers
A remote job at 90,000 against an office job at 100,000 with 18,000 a year of commuting saves you 16,000 over 2 years by working remotely.
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Rent calculator
With a gross annual income of 60,000 and 30% set aside for housing, you can carry a monthly rent of 1,500.
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Rent increase calculator
A 5% increase on a current rent of 1,500 adds 75, so the new rent is 1,575. Landlords get both lines for the renewal letter, and tenants can check a notice…
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Residual income calculator
Net operating income of 50,000 on 200,000 of invested capital with a 10% required return leaves a residual income of 30,000 after a capital charge of 20,000.
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Retained earnings calculator
Opening retained earnings of 100,000, net income of 40,000 and dividends of 15,000 close the period at 125,000, a change of 25,000.
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Get your key
Create an account with your email and add balance when you need it. No subscription, no sales call.
2
Call the endpoint
One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.
3
Collect the result
Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.
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On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.
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The full API — 7800+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
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