Rent & Property Calculators

Renting involves the same handful of calculations over and over, on both sides of the agreement: how much rent is owed for a partial month, what a rent increase means in percent and per year, whether a rent is affordable on a given income, how to split rent fairly between people with different rooms or incomes, and what a property really yields after costs. Each calculator here does one of those jobs with the figures you enter and explains the convention it uses.

Rent-control limits, deposit rules, notice periods and property taxes vary by country and city. The tools do the arithmetic; check the rules that apply where you live before relying on a result in a dispute.

• Prorated Rent CalculatorRent for a partial month when you move in or out mid-month, by daily rate
• Rent Increase CalculatorNew rent from a percentage increase, the percentage between two rents, and the yearly cost of the change
• Rent Split CalculatorSplit rent between flatmates equally, by room size, or by income
• Rent to Income CalculatorRent as a share of income, and the rent a given income supports at a target ratio
• Rental Yield CalculatorGross and net rental yield from price, rent and running costs, plus monthly cash flow