Cooking, Baking & Brewing 7 calculators
- Baker's Percentage CalculatorBaker's percentage (flour = 100%)Baker's percentage expresses every ingredient in a bread formula as a percentage of the total flour weight, with flour itself…
- Baking Pan Size Conversion CalculatorPan area scalingSwapping a 9×13 for two 8-inch rounds is not a guess — it is a ratio of two areas. This calculator works out the baking surface…
- Beer ABV Calculator (OG & FG)ASBC gravity and alcohol conventionsEnter the original gravity you took before pitching and the final gravity you took when fermentation stopped, and this…
- Brewhouse Efficiency CalculatorGravity points against fine-grind dry-basis extract potential (PPG)Efficiency is the ratio of the sugar you actually got to the sugar your grain could have given. This calculator works out both…
- Brine Salt Percentage CalculatorEquilibrium brining and the salometer scaleEnter the meat you are brining, the water you will cover it with, and the strength you want, and this calculator returns the…
- Brisket Smoking Time CalculatorUSDA FSIS low-temperature cooking guidance (surface to 140 °F within 4 hours)Brisket is planned backward from the serve time, and the number people usually get wrong is not the hours per pound — it…
- Brix to Alcohol (Potential ABV) CalculatorDegrees Brix (ICUMSA sucrose scale)Enter a Brix reading from a refractometer or a hydrometer and this calculator returns the equivalent specific gravity, the…
Accounting & Financial Statement Analysis 5 calculators
- Bank Reconciliation CalculatorASC 305 cash · UCC Article 4 statement reviewEnter your bank statement balance and your general ledger cash balance and this calculator works both columns of the…
- Basic Earnings Per Share CalculatorASC 260 / IAS 33Basic earnings per share looks like a one-line division and almost never is, because the denominator has to be time-weighted…
- Break-Even Point in Units CalculatorCost-volume-profit (CVP) analysisYour break-even point is the number of units you must sell before the business stops losing money. Enter your fixed costs for…
- Break-Even Sales Revenue CalculatorCost-volume-profit (CVP) analysisThis calculator gives you break-even revenue in dollars rather than units, which is the form you need whenever there is no…
- Budget vs Actual Variance CalculatorFlexible-budget variance framework (managerial accounting)Enter a budgeted amount and the actual result and this calculator returns the variance in dollars, the variance as a percent of…
Everyday Life & Household 5 calculators
- Baby Formula Cost CalculatorAAP feeding guidance: about 2.5 fl oz per pound of body weight per dayFormula intake follows body weight closely enough that one rule covers most of the first six months: about 2.5 fluid ounces of…
- Babysitter Pay CalculatorFLSA §13(a)(15)Enter the time your sitter arrived and the time they left and this calculator turns the evening into a number you can hand over…
- Baseboard & Trim Linear Feet CalculatorRoom perimeter geometry with trade waste allowancesThis calculator turns room dimensions into the exact quantity of baseboard, base cap, shoe molding or door casing you need to…
- Bra Size CalculatorSnug-band methodEnter two tape measurements — snug under the bust, and around the fullest part — and this calculator returns your band size…
- Buy Now Pay Later True APR CalculatorTruth in Lending Act APR as a periodic rate annualisedA pay-in-four plan with no interest really is free — until a service fee or a late fee lands on it. Then the plan has a…
Automotive, Diesel & Motorsports 4 calculators
- Boost Horsepower Gain CalculatorIdeal-gas charge density method, k = 1.4Boost makes power by raising the density of the air in the cylinder, and density depends on pressure and temperature &mdash…
- Bore to Stroke Ratio CalculatorSwept-volume engine geometryEnter your bore and stroke and this calculator returns the bore/stroke ratio, its inverse, the classification every engine…
- Brake Bias & Brake Torque CalculatorSAE J866 friction codes; FMVSS 135 light vehicle brake systemsBrake bias is the share of total braking torque produced at the front axle, and every component in the hydraulic chain moves…
- Braking Stopping Distance CalculatorAASHTO Green Book stopping sight distance modelStopping a vehicle takes two distances, not one: the distance you cover while you react, which grows in proportion to speed…
Computing, IT, Networking & Security 4 calculators
- Backup Window CalculatorBackup window planning arithmeticA backup window is the stretch of time when a backup can run without hurting production, and the only question that matters is…
- Bandwidth-Delay Product CalculatorRFC 7323 TCP window scalingThe bandwidth-delay product is how much data a path holds while it is in transit — the bits that have left the sender but not…
- Base64 Encoded Size CalculatorRFC 4648, RFC 2045Base64 turns three bytes into four printable characters, so it costs exactly one third more than the binary it encodes — plus…
- Big-O Operations & Runtime Estimator CalculatorAsymptotic (Bachmann–Landau) notationBig-O tells you how work grows with input size; it does not tell you how long anything takes. This calculator closes that gap…
Sports, Games, Gambling Odds & Hobbies 4 calculators
- Batting Average CalculatorMLB Official Baseball Rules, Rule 9.22Enter hits and at-bats and this calculator returns batting average to three decimal places exactly as an official scorer would…
- Betting Odds Converter & Implied Probability CalculatorEnter a price in any format - American moneyline, decimal, fractional or Hong Kong - and this calculator returns the other…
- Bowling Score Calculator (Ten-Pin Scoring)USBC Playing Rules, ten-pin scoringType your rolls and this calculator scores the game exactly as a league scoresheet does: an open frame is worth the pins you…
- Bullet Drop & Trajectory CalculatorPoint-mass solver, G1/G7 drag functions, ICAO standard atmosphereEnter muzzle velocity, ballistic coefficient, bullet weight and your zero, and this calculator integrates the point-mass…
Biology, Genetics & Clinical Lab 3 calculators
- Bacterial Generation Time CalculatorLog-phase exponential growth equationsEnter the cell number at the start of a log-phase incubation, the number at the end, and the time between them. This calculator…
- Blood Alcohol Content Calculator (Widmark)Widmark equation (1932)This calculator applies Erik Widmark's equation to estimate blood alcohol concentration from four things you actually know: how…
- Body Surface Area (BSA) CalculatorMosteller and Du Bois formulasThis calculator returns body surface area in square metres from height and weight by all five formulas in routine clinical use…
Business, Marketing & E-commerce 3 calculators
- Billable Utilization Rate CalculatorProfessional-services utilization conventionEnter the hours one person had available, the hours they logged as billable, the hours you actually invoiced and what you…
- Break-Even Point CalculatorCost-volume-profit (CVP) analysisEnter your fixed costs, your selling price and your variable cost per unit, and this calculator returns the volume at which the…
- Burn Rate & Cash Runway CalculatorFASB ASC 205-40 going-concern horizonYour runway is the number of months your cash balance survives at your current rate of consumption, and it is the single most…
Chemistry & Chemical Engineering 3 calculators
- Beer-Lambert Law CalculatorBeer-Lambert law, A = ε·l·c (IUPAC decadic absorbance)A spectrophotometer measures how much light a sample swallows, and the Beer-Lambert law turns that into a concentration: A =…
- Boiling Point Elevation CalculatorEbullioscopic (colligative) limiting lawDissolve anything in a liquid and it boils higher than it did pure. This calculator returns the size of that shift, ΔT b , and…
- Boyle's Law CalculatorBoyle's law (1662), the isothermal limit of the ideal gas lawBoyle's law says that for a fixed amount of gas held at constant temperature, pressure and volume are inversely proportional…
Construction, Carpentry & Concrete 3 calculators
- Beam Deflection CalculatorEuler–Bernoulli beam theory; IRC 2021 Table R301.7 / IBC 2021 Table 1604.3This calculator returns the maximum elastic deflection of a beam, together with the bending moment and end reactions that go…
- Board Foot CalculatorNHLA hardwood measure; PS 20 softwood sizesA board foot is a volume: 144 cubic inches of lumber, or a piece 1 inch thick, 12 inches wide and 1 foot long. Enter a board's…
- Brick CalculatorASTM C216 brick sizes; BIA Technical NotesEnter the wall, pick the brick, and this calculator returns the three numbers a mason orders from: bricks per square foot…
Electrical Trade & Electronics 3 calculators
- Battery Bank Sizing CalculatorIEEE 1013 sizing practiceEnter what you use in a day, how many days you want to ride through without charging, and how deeply you are willing to…
- Battery Runtime CalculatorPeukert's law (IEC 61056 hour-rate basis)Give this calculator a battery's amp-hour rating, its voltage, and the load in watts, and it returns the runtime in hours along…
- Box Fill Calculator (NEC 314.16)NEC 2023 (NFPA 70) 314.16Enter what is going into the box — conductor sizes and counts, devices on yokes, internal clamps, support fittings and…
Investing & Retirement 3 calculators
- Bond Current Yield CalculatorCurrent yield = annual coupon ÷ market priceCurrent yield is the fastest honest measure of what a bond pays you: annual coupon income divided by what the bond costs today…
- Bond Price CalculatorStreet convention (30/360, actual/actual)Enter a bond's face value, coupon rate, required yield and remaining term, and this calculator returns the price a buyer should…
- Bond Yield to Maturity (YTM) CalculatorBond-equivalent yield (semiannual compounding convention)Yield to maturity is the single discount rate that makes a bond's remaining cash flows worth exactly what you paid for it — the…
Calculus, Linear Algebra & Discrete Math 2 calculators
- Bisection Method CalculatorBisection method; Intermediate Value TheoremEnter a function and a bracket whose endpoints give f opposite signs, and this calculator halves the interval until the width…
- Boolean Algebra Simplification CalculatorQuine–McCluskey minimisationEnter a Boolean expression and this calculator returns its minimal two-level form — not a form that happens to be shorter, but…
Cloud, SaaS & IT Spend 2 calculators
- Backup & Disaster Recovery Cost CalculatorAWS disaster recovery strategies; NIST SP 800-34 Rev. 1 (RPO/RTO)Recovery objectives are bought, not chosen. Every hour you shave off your recovery time objective costs more standing capacity…
- Build vs Buy Software CalculatorDiscounted cash flow comparison of alternativesBuild-versus-buy decisions go wrong on the second line, not the first. Development cost is estimated carefully and maintenance…
Health, Fitness & Nutrition 2 calculators
- BMI CalculatorWHO adult BMI classificationBody mass index compares your weight with your height on a single scale, and it is the number every screening tool, insurance…
- BMR CalculatorMifflin-St Jeor equation (1990)Basal metabolic rate is the energy your body spends doing nothing — running your heart, brain, kidneys and liver while you lie…
Machining, Welding & Metal Fabrication 2 calculators
- Bend Allowance CalculatorNeutral-axis bend allowance (K-factor method)Bend allowance is the length of material that disappears into a bend. Bend a flat strip and the finished part is always shorter…
- Bolt Torque CalculatorSAE J429 / ISO 898-1 with the short-form torque equationTorque is not the thing you actually want from a bolt. What holds a joint together is preload — the tension stretched…
Personal Finance, Loans & Credit 2 calculators
- Balance Transfer Savings CalculatorRegulation Z (12 CFR 1026)A balance transfer trades a one-off fee for a stretch of cheap or free interest. Whether that is a good trade depends on three…
- Biweekly Mortgage Payment CalculatorAmortised loan formulaA biweekly mortgage plan sends half your normal payment every fourteen days. Because a year holds 26 fourteen-day periods…
Professional Licensing & Applied Exam Math 2 calculators
- Bearing to Azimuth Converter CalculatorQuadrant bearing / whole-circle azimuth conventionEnter a quadrant bearing such as N 45°30′00″ E, or an azimuth measured clockwise from north, and this converter returns the…
- Bond Premium & Discount Amortization CalculatorASC 835-30This calculator prices a bond issue at the market yield and then builds the issuer’s effective-interest amortisation schedule…
Statistics & Probability 2 calculators
- Bayes' Theorem CalculatorBayes' theorem with the law of total probabilityEnter how common a condition is, how often the test catches it, and how often the test is right when the condition is absent…
- Binomial Distribution CalculatorBinomial distribution (Bernoulli trials)Enter the number of trials, the probability of success on each one, and the number of successes you care about, and this…