Get the numbers right
Online calculators · Page 6
Type a calculation, change a number and get an answer you can use.
/
Search by tool or task. Use ↓ to choose, Enter to open.
Browse by task
Even eight arms couldn’t find that.
Try a shorter name, like “text”, “color” or “code”.
- Great circle distance radius mapMeasure the shortest spherical surface distance between coordinates and draw a radius around the starting point.
- Gross rent multiplier calculatorGross rent multiplier = property price ÷ annual gross rent.
- Half angle calculatorCalculate the sine, cosine and tangent of half your angle in degrees.
- Half life calculatorFind what remains after a chosen time: remaining = initial × 2^(−time/half-life).
- Heloc calculatorCompare interest-only carrying cost with an amortizing payment on a drawn credit-line balance.
- House affordability calculatorTranslate your monthly housing budget into a property price using your loan, down-payment and other-cost assumptions.
- Ideal gas law calculatorCalculate ideal-gas pressure with P = nRT/V using kelvin, cubic metres and moles.
- Impulse calculatorImpulse = average net force × time interval.
- Inflation calculatorProject an amount forward at your chosen constant inflation rate and see the purchasing power of unchanged cash.
- Instagram engagement rate calculatorEngagement rate = interactions ÷ audience denominator × 100.
- Integral calculatorIntegrate a polynomial and calculate a signed area between bounds.
- Interest rate calculatorSolve the fixed monthly interest rate implied by a principal, payment and payment count.
- Inventory planning calculatorReorder point = expected demand during supplier lead time + your safety stock.
- Inventory turnover calculatorInventory turnover = cost of goods sold ÷ average inventory at cost.
- IRR calculatorFind the discount rate that makes net present value zero for an initial investment followed by nonnegative returns.
- Isosceles triangle calculatorHeight of an isosceles triangle = √(equal side² − (base ÷ 2)²). Area = base × height ÷ 2.
- Kinetic energy calculatorKinetic energy = ½ × mass × speed².
- Law of cosines calculatorFind a triangle’s third side from two sides and the included angle: c² = a² + b² − 2ab cos C.
- Law of sines calculatorSolve a triangle with one side and two angles using a/sin A = b/sin B = c/sin C.
- Lawn mowing calculatorEstimate mowing time from area, effective swath, travel speed and your allowance for turns and obstacles.
- Lean body mass calculatorSubtract the fat fraction from total mass using a body-fat percentage you supply.
- Lease vs buy car calculatorCompare equal-duration lease and purchase scenarios after resale value and remaining purchase debt.
- Least to greatest calculatorSort a list numerically from least to greatest and greatest to least.
- Led resistor calculatorSeries resistance = (supply voltage − LED forward voltage) ÷ current. Current in milliamps is divided by 1,000.
- Lens formula calculatorSolve the thin-lens equation 1/f = 1/u + 1/v and magnification m = −v/u.
- Life insurance calculatorAdd the income, debts and expenses you want to cover, then subtract available savings and existing life insurance.
- Linear feet to square feet calculatorConvert a length of material to area: square feet = linear feet × width in inches ÷ 12.
- Linear regression calculatorFit the least-squares line y = intercept + slope × x for paired numeric data.
- Loan calculatorEstimate a fixed monthly payment and total interest.
- Loan comparison calculatorCompare two fixed-rate loans for the same principal using their monthly payments and total outlay including upfront fees.
- Long division calculatorDivide whole numbers with quotient, remainder and a digit-by-digit long-division trace.
- Love compatibility calculatorTry a playful two-name match. It is a game, not a prediction.
- Lumber weight calculatorFind timber mass from volume and the density you supply.
- Margin markup calculatorMargin divides gross profit by selling price; markup divides it by cost.
- Margin of error calculatorCalculate a normal-approximation margin of error for a sample proportion: z√(p(1 − p)/n).
- Marketplace fee calculatorNet proceeds = sale × (1 − percentage fee ÷ 100) − fixed fee − other costs.
