Profit Margin Calculator
Calculate the gross margin of a sale and find the selling price that hits a target margin given the cost of goods.
Calculate the gross margin of a sale and find the selling price that hits a target margin given the cost of goods.
Computes the electric field magnitude at a distance r from a point charge Q using Coulomb's constant.
Calculates work done by a constant force: W = F · d · cos θ, where F is force magnitude, d is displacement, and θ is the...
Compute the required ventilation airflow (CFM) for a room from the room volume and a target air-changes-per-hour (ACH) f...
Compute how many months it will take to pay off a balance at a given monthly payment and interest rate.
Project the future value of a stock holding when dividends are automatically reinvested at the same yield, given startin...
Compute the Sharpe ratio of a portfolio = (portfolio return − risk-free rate) / standard deviation of portfolio returns.
Calculates UK Stamp Duty Land Tax (SDLT) for residential property purchases using the standard progressive band rates: 0...
Calculates gravitational potential energy U = −G·M·m/r and gravitational force F = G·M·m/r² between two point masses sep...
Calculates recommended daily water intake from body weight and physical activity level using the standard hydration refe...
Compute the PEG ratio — a growth-adjusted P/E that contextualises a stock's valuation: PEG = (P/E) / annual EPS growth (...
Convert any fuel-economy figure between US miles per gallon, Imperial (UK) miles per gallon, kilometres per litre, and l...
Needs, wants, and savings at 50/30/20 is a starting point — not a rulebook. Here is how to adapt it when your life doesn't fit neatly into t...
A calm, jargon-free walkthrough of what actually drives your monthly mortgage payment — and how to make the number smaller.
We pulled usage data across our 30 most-visited calculators to understand how readers actually use consumer finance tools. Findings, caveats...
The same $250 a month looks unremarkable for a decade and then suddenly dominates the chart. Here is why compounding behaves that way.