AI, LLM & Machine Learning Engineering 5 calculators
- LLM API Token Cost CalculatorPer-million-token billing conventionLarge-language-model APIs bill per million tokens, with output tokens costing several times more than input tokens and cached…
- LLM Cost Per User Per Month CalculatorToken-metered unit economicsThis calculator turns per-token API pricing into the number that decides whether an AI feature can be priced profitably: what…
- LLM GPU VRAM Requirement CalculatorThis calculator adds up the four things that occupy GPU memory when you run a language model: the weights, the KV cache, the…
- LLM Throughput & Latency Calculator (Tokens Per Second)Memory-bandwidth-bound decode modelToken generation on a transformer is bound by memory bandwidth, not by arithmetic: every token generated requires reading the…
- LLM Training Compute (FLOPs) CalculatorC = 6ND scaling estimate (Kaplan et al. 2020; Hoffmann et al. 2022)This calculator turns a parameter count and a token budget into the three numbers that decide whether a pre-training run is…
Arithmetic, Algebra & Number Theory 4 calculators
- LCM CalculatorFundamental theorem of arithmetic; Euclidean algorithmEnter two, three or four whole numbers and this calculator returns their least common multiple — the smallest positive number…
- Linear Equation SolverLinear equation in one unknown; balance (equivalence) transformationsEnter the four numbers in ax + b = cx + d and this solver returns x as an exact fraction and as a decimal, substitutes it back…
- Logarithm CalculatorChange-of-base identityA logarithm answers one question: what power do I raise this base to in order to get this number? Enter a value and a base and…
- Long Division Calculator with RemainderEuclidean division algorithmEnter a dividend and a divisor and this calculator returns the quotient and remainder, the exact decimal value, and the…
Calculus, Linear Algebra & Discrete Math 4 calculators
- L'Hopital's Rule CalculatorL'Hôpital's rule (Cauchy mean value theorem)Enter a numerator, a denominator and the point being approached, and this calculator checks whether the quotient is genuinely…
- Lagrange Interpolation CalculatorLagrange form of the interpolating polynomialGive this calculator a table of x and y values and it builds the unique polynomial of lowest degree that passes exactly through…
- Laplace Transform CalculatorStandard one-sided Laplace transform tableThis calculator works both directions. Give it a time-domain function of the form A·tⁿ·e^(at)·sin(ωt) or A·tⁿ·e^(at)·cos(ωt)…
- Limit CalculatorEpsilon-delta definition of a limit, evaluated by numerical approachEnter a function and a point and this calculator approaches that point from both sides, dividing the step by ten at each stage…
Insurance & Risk Management 4 calculators
- Landlord Insurance Coverage CalculatorISO Dwelling Property (DP-3) form structureA landlord policy is three separate sizing decisions wearing one premium. Coverage A is set by what it costs to rebuild the…
- Life Insurance Needs Analysis CalculatorFamily needs (capital needs) approachThe needs approach asks what your family would actually have to fund if your income stopped tomorrow, then subtracts what they…
- Long-Term Care Cost Projection CalculatorA care episode that starts twenty years from now is not priced at today's daily rate. Care costs are driven by wages in a…
- Long-Term Care Inflation Rider CalculatorA long-term care policy bought at 55 and claimed at 85 is only worth what its daily benefit has grown to by then, which is why…
Everyday Life & Household 3 calculators
- Ladder Length & Angle CalculatorOSHA 29 CFR 1926.1053Enter the height of the eave, gutter or window you need to work at and this calculator returns the four numbers that decide…
- Laundry Load Cost CalculatorSensible heat equation, Q = m·c·ΔTThe electricity a washing machine draws is the smallest part of what a load of laundry costs. Heating the water is usually…
- Luggage Weight & Size Allowance Calculator62 in / 158 cm linear checked-baggage conventionAirlines measure a suitcase in linear dimensions — length plus width plus height added together, not multiplied — and almost…
Personal Finance, Loans & Credit 3 calculators
- Lease vs Buy Car CalculatorDiscounted cash flow comparisonLeasing and financing are not comparable on monthly payment, because one of them leaves you owning a car at the end. This…
- Loan APR Calculator (Rate vs APR)Regulation Z (12 CFR 1026)The note rate sets your payment. The annual percentage rate tells you what the loan actually costs once the lender's fees are…
- Loan Payoff Time CalculatorDeclining-balance amortisation; Regulation Z APR disclosureEvery other loan calculator solves for the payment. This one solves for the time : give it a balance, an APR and the payment…
Agriculture, Livestock & Landscaping 2 calculators
- Lawn Fertilizer Rate CalculatorState nutrient-management law and extension turf nitrogen programmesLawn fertiliser recommendations are written in pounds of nitrogen per 1,000 square feet, but the bag in your garage is a…
- Livestock Gestation & Due Date CalculatorEnter the service date and this calculator projects the due date for cattle, horses, sheep, goats, pigs and camelids, using…
Aviation, Aerospace & Marine 2 calculators
- Landing Distance CalculatorCAA Safety Sense correction factorsFlight manual landing distances are measured on a dry, level, hard runway at sea level, at maximum weight, by a test pilot…
- Lift Equation CalculatorISA (ICAO Standard Atmosphere, 1993)This calculator solves the lift equation L = ½ρV²S·C L in any of its four directions: the lift a wing…
Business, Marketing & E-commerce 2 calculators
- Landed Cost Per Unit CalculatorIncoterms 2020 · WTO Customs Valuation AgreementLanded cost is what a unit really costs once it sits on your own shelf — supplier price plus freight, cargo insurance, duty…
- LTV to CAC Ratio CalculatorGross-margin LTV convention (SaaS metrics)The LTV:CAC ratio divides the gross profit a customer produces over their lifetime by what you spent to acquire them. Enter a…
Electrical Trade & Electronics 2 calculators
- LC / RLC Resonant Frequency CalculatorThomson resonance formula f0 = 1/(2π√LC)Enter an inductance and a capacitance and this calculator returns the resonant frequency of the tank, its characteristic…
- LED Series Resistor CalculatorIEC 60063 preferred resistor values (E6/E12/E24)Give this calculator your supply voltage, the LED's forward voltage and the current you want through it, and it returns the…
Geometry & Trigonometry 2 calculators
Legal, Claims & Settlements 2 calculators
- Litigation Expected Value & Settlement CalculatorExpected-value decision analysisA settlement offer is a certain amount now. Trial is a distribution of amounts later, minus a larger fee and larger case costs…
- Lost Earning Capacity Present Value CalculatorNet discount rate methodFuture wage loss is not worth its nominal total. A claimant who will lose $44,000 a year for the next eighteen years has not…
Time, Date, Navigation & Astronomy 2 calculators
- Leap Year CalculatorGregorian calendar reform of 1582 (papal bull Inter gravissimas)Type a year and this calculator tells you whether it is a leap year, how many days it holds, and which years either side of it…
- Light Travel Time & Light Year CalculatorIAU 2012 Resolution B2 and IAU 2015 Resolution B2 unit definitionsGive this calculator a distance and it returns how long light takes to cover it; give it a time and it returns the distance…