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Online calculators · Page 5
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- Equipment lease vs buy calculatorCompare lease-payment present value with purchase cost minus discounted resale proceeds.
- EV charging plannerEstimate energy and time for a battery charge change from capacity, efficiency and average input power.
- Expected value calculatorWeight possible outcomes by their probabilities.
- Exponential decay calculatorProject repeated proportional loss with remaining = initial × (1 − loss rate)ⁿ.
- Exponential growth calculatorProject compound growth with final = initial × (1 + rate)ⁿ.
- Factorial calculatorCalculate a factorial as an exact whole number.
- Fair rent split calculatorSplit a two-person rent bill according to weights you agree on, such as income or room value.
- Feet inches calculatorCombine whole feet and extra inches, then show total inches, decimal feet and centimetres.
- Fence calculatorSections = run length ÷ maximum section length, rounded up. A single open straight run needs one more post than sections.
- Fertilizer calculatorProduct required = treated area × label application amount ÷ label reference area.
- Fibonacci sequence calculatorFind Fₙ exactly with F₀ = 0, F₁ = 1 and Fₙ = Fₙ₋₁ + Fₙ₋₂.
- Finance trackerTotal a private list of money received and spent, with an opening and closing balance.
- Financial calculatorProject a balance with regular contributions and your own rate.
- Fire calculatorTranslate a spending gap into a portfolio target using your chosen withdrawal-rate assumption.
- Flooring calculatorPacks = floor area × (1 + allowance ÷ 100) ÷ coverage per pack, rounded up.
- Flow rate calculatorVolumetric flow rate = volume ÷ elapsed time.
- Force calculatorNet force = mass × acceleration.
- Fraction calculatorAdd, subtract, multiply or divide fractions and mixed numbers.
- Framing calculatorCount regular stud positions across a straight wall with an end stud at each end.
- Freelance rate calculatorRequired hourly rate = (annual pay target + annual costs) ÷ billable hours.
- Frequency calculatorFrequency = cycle count ÷ time in seconds.
- Friction force calculatorFriction force magnitude = friction coefficient × normal force.
- Fuel cost calculatorTrip fuel cost = miles ÷ miles per gallon × price per gallon.
- Future value calculatorFuture value = present amount × (1 + rate per period)^periods.
- Future value of annuity calculatorAn ordinary annuity’s future value = payment × ((1 + rate)^payments − 1) ÷ rate. At zero rate, multiply payment by count.
- Gacha probability calculatorCalculate the chance of at least one success with 1 − (1 − p)ⁿ.
- Gas mileage calculatorFuel economy in miles per gallon = miles traveled divided by gallons used.
- GDP calculatorAdd expenditure components with GDP = consumption + investment + government purchases + exports − imports.
- Gear ratio calculatorCalculate a gear-pair reduction from driven teeth ÷ driving teeth and find output speed.
- Geometric mean calculatorFind a multiplicative average without multiplying large products.
- Golden ratio calculatorSplit a total length in the golden ratio φ = (1 + √5)/2.
- Grams to moles calculatorConvert grams to moles with amount = mass ÷ molar mass.
- Graph functions onlinePlot a function, adjust the window and inspect a value.
- Gravel calculatorLoose material volume = area × depth × (1 + allowance ÷ 100). Estimated mass = volume × supplied bulk density.
- Gravitational force calculatorCalculate Newtonian gravitational force F = Gm₁m₂/r² between two point masses or separated spherical bodies.
- Gravitational potential energy calculatorPotential energy change = mass × local gravitational acceleration × height change.
